Tag Archives: motor bike

China Best Sales High Speed Two Wheel MID Drive Brushless Motor 48V 13ah Lithium Battery E Bike with All Suspension with Free Design Custom

Product Description

Product Description

1. Warranty policy
 
a.)     For main electronic parts, charger, controller and battery, we provide 6 months warranty.
b.)     For motor, we provide 12 months warranty.
c.)     For frame, handlebar, stem and wheel rim we provide 2 years warranty.
 
 1.1 The following conditions, not including in warranty policy
a.)     Any damages caused by human factor.
b.)     Dismounting any parts without professional technical people.
c.)     Use other parts in our electric bike or scooter.
d.)     Damages caused by traffic accident and other accident.
e.)     The problem caused by overloading.
 
 2. Technical support
 
a.)     We provide “electric circuit diagram” for each model.
b.)     We can train customer’s 1 or 2 technical workers for free.
c.)     When oversea customers meet serious problem, they can not work out by technican, we will dispatch engineer to customer’s company to give help.
 
FAQ
 
 1.  Can I order sample?
 Answer: Yes, we accept sample for trial order?
 
2.  How long for delivery time?
 Answer: For sample order, our delivery time is 20 to 30days; for 1 full container, it’s 25 to 45days.
 
3.  Which colores will be available?
 Answer: Normally, we will introduce the most popular colores to customers. At the same time, we are CZPT to make colores according to customer’s demands.
 
4.  Can I use my logo(sticker) on the electric bike?
 Answer: Yes, we can make customer’s logo(sticker) on the electric bike for 1 full container order.
 
5.  How to delivery to foreign buyer?
 Answer: For sample order, the customer can select by sea or by air.  For full container order, by sea is the  best choice.
 
6.  Need I assemble parts of the electric bike when we get them?
 Answer: Yes, we will take out few parts, like pedals(if have), mirrors(if have), front wheel, front fender, and  rear trunk(if have) before package. Our workers will put these parts in electric bike cartons. And will send 1 professional tool bag to help you assemble. It’s easy to make it.
 
7. Can I mix different models in 1 full container order?
 Answer: Yes, we accept different models in 1 full container.
 
8.  Need I buy spare parts for first order?
 Answer: Yes, you need to buy some spare parts for future service. The quantity depends on your electric  bike order. We will give you advice when you need.
 

Our service
1. OEM Manufacturing welcome: Product, Package…
2. Sample order
3. We will reply you for your inquiry in 24 hours.
4. After sending, we will track the products for you once every 2 days, until you get the products. When you got the goods, test them, and give me a feedback.If you have any questions about the problem, contact with us, we will offer the solve way for you.

Features

1.1000W CZPT M620 mid drive motor
2.Tektro HD-E350 oil disc brake for both&Tektro brake levers
3.48V 13AH lithium battery(Samsung cells)
4.CZPT C18 Colorful LCD Display
5. 7 speed CZPT gear shift
6.27.5″X2.125 Maxxis tire
7.CZPT Hydraulic suspension fork with lock
8.PAS and Throttle

 

Frame

Aluminum alloy frame

Motor

1000W CZPT M620 mid drive motor

Battery

48V 13AH Lithium battery

Display

LCD display

Light

LED light 

Tire

27.5”x2.125 tire

 Brake

Disc brake for both

Front Fork

RST Hydraulic suspension fork with lock

Max speed

25km/h-32km/h

Driving distance

Approx 45km-60km per charging

Loading capacity

150KGS

N.W/G.W

25kg/30kg

Packing size

155x25x78cm

Container loads

93pcs/20’GP; 226pcs/40’HQ
   

 

High quality saddle,soft and comfortable
Aluminum alloy with suspension
BMS system keep your battery safe from over-charging,over outlet and high temperature.
Powerful mid-drive motor means that hills are no longer a barrier when you ride.
RST Hydraulic suspension fork with lock

Certifications

Company Profile

Packaging & Shipping

FAQ

Screw Shaft Features Explained

When choosing the screw shaft for your application, you should consider the features of the screws: threads, lead, pitch, helix angle, and more. You may be wondering what these features mean and how they affect the screw’s performance. This article explains the differences between these factors. The following are the features that affect the performance of screws and their properties. You can use these to make an informed decision and purchase the right screw. You can learn more about these features by reading the following articles.

Threads

The major diameter of a screw thread is the larger of the 2 extreme diameters. The major diameter of a screw is also known as the outside diameter. This dimension can’t be directly measured, but can be determined by measuring the distance between adjacent sides of the thread. In addition, the mean area of a screw thread is known as the pitch. The diameter of the thread and pitch line are directly proportional to the overall size of the screw.
The threads are classified by the diameter and pitch. The major diameter of a screw shaft has the largest number of threads; the smaller diameter is called the minor diameter. The thread angle, also known as the helix angle, is measured perpendicular to the axis of the screw. The major diameter is the largest part of the screw; the minor diameter is the lower end of the screw. The thread angle is the half distance between the major and minor diameters. The minor diameter is the outer surface of the screw, while the top surface corresponds to the major diameter.
The pitch is measured at the crest of a thread. In other words, a 16-pitch thread has a diameter of 1 sixteenth of the screw shaft’s diameter. The actual diameter is 0.03125 inches. Moreover, a large number of manufacturers use this measurement to determine the thread pitch. The pitch diameter is a critical factor in successful mating of male and female threads. So, when determining the pitch diameter, you need to check the thread pitch plate of a screw.
screwshaft

Lead

In screw shaft applications, a solid, corrosion-resistant material is an important requirement. Lead screws are a robust choice, which ensure shaft direction accuracy. This material is widely used in lathes and measuring instruments. They have black oxide coatings and are suited for environments where rusting is not acceptable. These screws are also relatively inexpensive. Here are some advantages of lead screws. They are highly durable, cost-effective, and offer high reliability.
A lead screw system may have multiple starts, or threads that run parallel to each other. The lead is the distance the nut travels along the shaft during a single revolution. The smaller the lead, the tighter the thread. The lead can also be expressed as the pitch, which is the distance between adjacent thread crests or troughs. A lead screw has a smaller pitch than a nut, and the smaller the lead, the greater its linear speed.
When choosing lead screws, the critical speed is the maximum number of revolutions per minute. This is determined by the minor diameter of the shaft and its length. The critical speed should never be exceeded or the lead will become distorted or cracked. The recommended operational speed is around 80 percent of the evaluated critical speed. Moreover, the lead screw must be properly aligned to avoid excessive vibrations. In addition, the screw pitch must be within the design tolerance of the shaft.

Pitch

The pitch of a screw shaft can be viewed as the distance between the crest of a thread and the surface where the threads meet. In mathematics, the pitch is equivalent to the length of 1 wavelength. The pitch of a screw shaft also relates to the diameter of the threads. In the following, the pitch of a screw is explained. It is important to note that the pitch of a screw is not a metric measurement. In the following, we will define the 2 terms and discuss how they relate to 1 another.
A screw’s pitch is not the same in all countries. The United Kingdom, Canada, and the United States have standardized screw threads according to the UN system. Therefore, there is a need to specify the pitch of a screw shaft when a screw is being manufactured. The standardization of pitch and diameter has also reduced the cost of screw manufacturing. Nevertheless, screw threads are still expensive. The United Kingdom, Canada, and the United States have introduced a system for the calculation of screw pitch.
The pitch of a lead screw is the same as that of a lead screw. The diameter is 0.25 inches and the circumference is 0.79 inches. When calculating the mechanical advantage of a screw, divide the diameter by its pitch. The larger the pitch, the more threads the screw has, increasing its critical speed and stiffness. The pitch of a screw shaft is also proportional to the number of starts in the shaft.

Helix angle

The helix angle of a screw shaft is the angle formed between the circumference of the cylinder and its helix. Both of these angles must be equal to 90 degrees. The larger the lead angle, the smaller the helix angle. Some reference materials refer to angle B as the helix angle. However, the actual angle is derived from calculating the screw geometry. Read on for more information. Listed below are some of the differences between helix angles and lead angles.
High helix screws have a long lead. This length reduces the number of effective turns of the screw. Because of this, fine pitch screws are usually used for small movements. A typical example is a 16-mm x 5-inch screw. Another example of a fine pitch screw is a 12x2mm screw. It is used for small moves. This type of screw has a lower lead angle than a high-helix screw.
A screw’s helix angle refers to the relative angle of the flight of the helix to the plane of the screw axis. While screw helix angles are not often altered from the standard square pitch, they can have an effect on processing. Changing the helix angle is more common in two-stage screws, special mixing screws, and metering screws. When a screw is designed for this function, it should be able to handle the materials it is made of.
screwshaft

Size

The diameter of a screw is its diameter, measured from the head to the shaft. Screw diameters are standardized by the American Society of Mechanical Engineers. The diameters of screws range from 3/50 inches to 16 inches, and more recently, fractions of an inch have been added. However, shaft diameters may vary depending on the job, so it is important to know the right size for the job. The size chart below shows the common sizes for screws.
Screws are generally referred to by their gauge, which is the major diameter. Screws with a major diameter less than a quarter of an inch are usually labeled as #0 to #14 and larger screws are labeled as sizes in fractions of an inch. There are also decimal equivalents of each screw size. These measurements will help you choose the correct size for your project. The screws with the smaller diameters were not tested.
In the previous section, we described the different shaft sizes and their specifications. These screw sizes are usually indicated by fractions of an inch, followed by a number of threads per inch. For example, a ten-inch screw has a shaft size of 2” with a thread pitch of 1/4″, and it has a diameter of 2 inches. This screw is welded to a two-inch Sch. 40 pipe. Alternatively, it can be welded to a 9-inch O.A.L. pipe.
screwshaft

Shape

Screws come in a wide variety of sizes and shapes, from the size of a quarter to the diameter of a U.S. quarter. Screws’ main function is to hold objects together and to translate torque into linear force. The shape of a screw shaft, if it is round, is the primary characteristic used to define its use. The following chart shows how the screw shaft differs from a quarter:
The shape of a screw shaft is determined by 2 features: its major diameter, or distance from the outer edge of the thread on 1 side to the inner smooth surface of the shaft. These are generally 2 to 16 millimeters in diameter. Screw shafts can have either a fully threaded shank or a half-threaded shank, with the latter providing better stability. Regardless of whether the screw shaft is round or domed, it is important to understand the different characteristics of a screw before attempting to install it into a project.
The screw shaft’s diameter is also important to its application. The ball circle diameter refers to the distance between the center of 2 opposite balls in contact with the grooves. The root diameter, on the other hand, refers to the distance between the bottommost grooves of the screw shaft. These are the 2 main measurements that define the screw’s overall size. Pitch and nominal diameter are important measurements for a screw’s performance in a particular application.

Lubrication

In most cases, lubrication of a screw shaft is accomplished with grease. Grease is made up of mineral or synthetic oil, thickening agent, and additives. The thickening agent can be a variety of different substances, including lithium, bentonite, aluminum, and barium complexes. A common classification for lubricating grease is NLGI Grade. While this may not be necessary when specifying the type of grease to use for a particular application, it is a useful qualitative measure.
When selecting a lubricant for a screw shaft, the operating temperature and the speed of the shaft determine the type of oil to use. Too much oil can result in heat buildup, while too little can lead to excessive wear and friction. The proper lubrication of a screw shaft directly affects the temperature rise of a ball screw, and the life of the assembly. To ensure the proper lubrication, follow the guidelines below.
Ideally, a low lubrication level is appropriate for medium-sized feed stuff factories. High lubrication level is appropriate for larger feed stuff factories. However, in low-speed applications, the lubrication level should be sufficiently high to ensure that the screws run freely. This is the only way to reduce friction and ensure the longest life possible. Lubrication of screw shafts is an important consideration for any screw.

China Best Sales High Speed Two Wheel MID Drive Brushless Motor 48V 13ah Lithium Battery E Bike with All Suspension with Free Design CustomChina Best Sales High Speed Two Wheel MID Drive Brushless Motor 48V 13ah Lithium Battery E Bike with All Suspension with Free Design Custom

China Best Sales 26 Inch Fat Tire 7-Speed CZPT CZPT MID-Drive Motor Electric Bike wholesaler

Product Description

Company Profile

        ZheJiang GT Technology Co., Ltd is founded in 2571, located in HangZhou city, which is around 1 hour car driving or 30 minutes high speed train far away from ZheJiang Xihu (West Lake) Dis.ao airport, a factory integrated with R&D, manufacture and sales for electric scooter and electric bike, 2000 square meters, 15 workers, ISO9001 and ISO14001 certified.

 

Product Description

26” Mid-drive fat tire with suspension fork

Motor:
BAFANG M620  48V1000W Mid-drive 

Display:
BAFANG LCD 5-levels

SHIMANO:
SHIMANO 7S shifter+7S deraileur +7S Cassette

Product Parameters

Model Name GT-EB26FC
Frame 26″*17″ aluminum alloy
Fork 26” suspension alloy crowns, with lock
Brake system Logan Hydraulic disc brake
Crankset Including in CZPT M620 1000W mid-motor
Chain KMC Z7
Gear system SHIMANO 7S shifter+7S deraileur +7S Cassette
Tire HangZhou 26*4.0AV
Motor BAFANG M620 1000W Mid-drive 48V1000W
Battery 48V17.5Ah LG cells lithium
Charger 54.6V3A
System LCD 5-levels, sensor for speed, power display
Packing  95% 1 bike per 1 export carton box

 

FAQ

1.Q:Can I get a sample and how long will it take?
A: Yes. We can supply sample. We will delivery after receiving your sample fee and freight cost in 7-10 days.
2. Q: Can I do customized product?
A: Yes. We can customized all your requirements like color, logo, design, package, and so on.
3. Q: What is the payment terms?
A: T/T
4.Q:Can I mix different models in 1 container?
A: Yes, you can.
5. Q:What’s the delivery time?
A: It will take about 45-60 days to finish an order.
 

Screw Shaft Types

A screw shaft is a cylindrical part that turns. Depending on its size, it is able to drive many different types of devices. The following information outlines the different types of screws, including their sizes, material, function, and applications. To help you select the right screw shaft, consider the following factors:
screwshaft

Size

A screw can come in a variety of shapes and sizes, ranging from a quarter to a quarter-inch in diameter. A screw is a cylindrical shaft with an inclined plane wrapped around it, and its main function is to fasten objects together by translating torque into a linear force. This article will discuss the dimensions of screws and how to determine the size of a screw. It is important to note that screw sizes can be large and small depending on the purpose.
The diameter of a screw is the diameter of its shaft, and it must match the inner diameter of its nuts and washers. Screws of a certain diameter are also called machine screws, and they can be larger or smaller. Screw diameters are measured on the shaft underneath the screw head. The American Society of Mechanical Engineers (ASME) standardized screw diameters in 3/50-inch to 16 (3/8-inch) inches, and more recently, sizes were added in U.S. fractions of an inch. While shaft and head diameters are standardized, screw length may vary from job to job.
In the case of the 2.3-mm screw group, the construct strength was not improved by the 1.2-mm group. The smaller screw size did not increase the strength of the construct. Further, ABS material did not improve the construct strength. Thus, the size of screw shaft is an important consideration in model design. And remember that the more complex your model is, the larger it will be. A screw of a given size will have a similar failure rate as a screw of a different diameter.
Although different screw sizes are widely used, the differences in screw size were not statistically significant. Although there are some limitations, screws of different sizes are generally sufficient for fixation of a metacarpal shaft fracture. However, further clinical studies are needed to compare screw sizes for fracture union rates. So, if you are unsure of what size of screw shaft you need for your case, make sure to check the metric chart and ensure you use the right one.
screwshaft

Material

The material of a screw shaft plays an important role in the overall performance of a screw. Axial and central forces act to apply torque to the screw, while external forces, such as friction, exert a bending moment. The torsional moments are reflected in the torque, and this causes the screw to rotate at a higher rate than necessary. To ensure the longevity of the screw, the material of the screw shaft should be able to handle the bending moment, while the diameter of the shaft should be small enough to avoid causing damage.
Screws are made from different metals, such as steel, brass, titanium, and bronze. Manufacturers often apply a top coating of chromium, brass, or zinc to improve corrosion resistance. Screws made of aluminum are not durable and are prone to rusting due to exposure to weather conditions. The majority of screw shafts are self-locking. They are suited for many applications, including threaded fasteners, C-clamps, and vises.
Screws that are fabricated with conical sections typically feature reduced open cross-sectional areas at the discharge point. This is a key design parameter of conical screw shafts. In fact, reductions of up to 72% are common across a variety of applications. If the screw is designed to have a hard-iron hanger bearing, it must be hardened. If the screw shaft is not hardened, it will require an additional lubricant.
Another consideration is the threads. Screw shafts are typically made of high-precision threads and ridges. These are manufactured on lathes and CNC machines. Different shapes require different materials. Materials for the screw shaft vary. There are many different sizes and shapes available, and each 1 has its own application. In addition to helical and conical screw shafts, different materials are also available. When choosing material, the best 1 depends on the application.
The life of the screw depends on its size, load, and design. In general, the material of the screw shaft, nut body, and balls and rollers determine its fatigue life. This affects the overall life of the screw. To determine whether a specific screw has a longer or shorter life, the manufacturer must consider these factors, as well as the application requirements. The material should be clean and free of imperfections. It should be smooth and free of cracks or flaking, which may result in premature failure.

Function

The function of a screw shaft is to facilitate the rotation of a screw. Screws have several thread forms, including single-start, double-start and multi-start. Each form has its own advantages and disadvantages. In this article we’ll explore each of them in detail. The function of a screw shaft can vary based on its design, but the following are common types. Here are some examples of screw shaft types and their purposes.
The screw’s torque enables it to lift objects. It can be used in conjunction with a bolt and nut to lift a load. Screws are also used to secure objects together. You can use them in screw presses, vises, and screw jacks. But their primary function is to hold objects together. Listed below are some of their main functions. When used to lift heavy loads, they can provide the required force to secure an object.
Screws can be classified into 2 types: square and round. Square threads are more efficient than round ones because they apply 0deg of angle to the nut. Square threads are also stronger than round threads and are often used in high-load applications. They’re generally cheaper to manufacture and are more difficult to break. And unlike square threads, which have a 0deg thread angle, these threads can’t be broken easily with a screwdriver.
A screw’s head is made of a series of spiral-like structures that extend from a cylindrical part to a tip. This portion of the screw is called the shank and is made of the smallest area. The shank is the portion that applies more force to the object. As the shaft extends from the head, it becomes thinner and narrow, forming a pointed tip. The head is the most important part of the screw, so it needs to be strong to perform its function.
The diameter of the screw shaft is measured in millimeters. The M8 screw has a thread pitch of 1.25 mm. Generally, the size of the screw shaft is indicated by the major and minor diameter. These dimensions are appended with a multiplication sign (M8x1).
screwshaft

Applications

The design of screws, including their size and shape, determines their critical rotating speeds. These speeds depend on the threaded part of the screw, the helix angle, and the geometry of the contact surfaces. When applied to a screw, these limits are referred to as “permissible speed limits.” These maximum speeds are meant for short periods of time and optimized running conditions. Continuous operation at these speeds can reduce the calculated life of a nut mechanism.
The main materials used to manufacture screws and screw shafts include steel, stainless steel, titanium, bronze, and brass. Screws may be coated for corrosion resistance, or they may be made of aluminium. Some materials can be threaded, including Teflon and nylon. Screw threads can even be molded into glass or porcelain. For the most part, steel and stainless steel are the most common materials for screw shafts. Depending on the purpose, a screw will be made of a material that is suitable for the application.
In addition to being used in fasteners, screw shafts are used in micrometers, drillers, conveyor belts, and helicopter blades. There are numerous applications of screw shafts, from weighing scales to measuring lengths. If you’re in the market for a screw, make sure to check out these applications. You’ll be happy you did! They can help you get the job done faster. So, don’t delay your next project.
If you’re interested in learning about screw sizing, then it’s important to know the axial and moment loads that your screws will experience. By following the laws of mechanics and knowing the load you can calculate the nominal life of your screw. You can also consider the effect of misalignment, uneven loading, and shocks on your screw. These will all affect the life of your screw. Then, you can select the right screw.

China Best Sales 26 Inch Fat Tire 7-Speed CZPT CZPT MID-Drive Motor Electric Bike wholesaler China Best Sales 26 Inch Fat Tire 7-Speed CZPT CZPT MID-Drive Motor Electric Bike wholesaler

China OEM Two Wheel MID Drive Brushless Motor 48V 13ah Lithium Battery Electric Electrical Electronic Bike Made in China with Great quality

Product Description

Product Description

1. Warranty policy
 
a.)     For main electronic parts, charger, controller and battery, we provide 6 months warranty.
b.)     For motor, we provide 12 months warranty.
c.)     For frame, handlebar, stem and wheel rim we provide 2 years warranty.
 
 1.1 The following conditions, not including in warranty policy
a.)     Any damages caused by human factor.
b.)     Dismounting any parts without professional technical people.
c.)     Use other parts in our electric bike or scooter.
d.)     Damages caused by traffic accident and other accident.
e.)     The problem caused by overloading.
 
 2. Technical support
 
a.)     We provide “electric circuit diagram” for each model.
b.)     We can train customer’s 1 or 2 technical workers for free.
c.)     When oversea customers meet serious problem, they can not work out by technican, we will dispatch engineer to customer’s company to give help.
 
FAQ
 
 1.  Can I order sample?
 Answer: Yes, we accept sample for trial order?
 
2.  How long for delivery time?
 Answer: For sample order, our delivery time is 20 to 30days; for 1 full container, it’s 25 to 45days.
 
3.  Which colores will be available?
 Answer: Normally, we will introduce the most popular colores to customers. At the same time, we are CZPT to make colores according to customer’s demands.
 
4.  Can I use my logo(sticker) on the electric bike?
 Answer: Yes, we can make customer’s logo(sticker) on the electric bike for 1 full container order.
 
5.  How to delivery to foreign buyer?
 Answer: For sample order, the customer can select by sea or by air.  For full container order, by sea is the  best choice.
 
6.  Need I assemble parts of the electric bike when we get them?
 Answer: Yes, we will take out few parts, like pedals(if have), mirrors(if have), front wheel, front fender, and  rear trunk(if have) before package. Our workers will put these parts in electric bike cartons. And will send 1 professional tool bag to help you assemble. It’s easy to make it.
 
7. Can I mix different models in 1 full container order?
 Answer: Yes, we accept different models in 1 full container.
 
8.  Need I buy spare parts for first order?
 Answer: Yes, you need to buy some spare parts for future service. The quantity depends on your electric  bike order. We will give you advice when you need.
 

Our service
1. OEM Manufacturing welcome: Product, Package…
2. Sample order
3. We will reply you for your inquiry in 24 hours.
4. After sending, we will track the products for you once every 2 days, until you get the products. When you got the goods, test them, and give me a feedback.If you have any questions about the problem, contact with us, we will offer the solve way for you.

Features

1.1000W CZPT M620 mid drive motor
2.Tektro HD-E350 oil disc brake for both&Tektro brake levers
3.48V 13AH lithium battery(Samsung cells)
4.CZPT C18 Colorful LCD Display
5. 7 speed CZPT gear shift
6.27.5″X2.125 Maxxis tire
7.CZPT Hydraulic suspension fork with lock
8.PAS and Throttle

 

Frame

Aluminum alloy frame

Motor

1000W CZPT M620 mid drive motor

Battery

48V 13AH Lithium battery

Display

LCD display

Light

LED light 

Tire

27.5”x2.125 tire

 Brake

Disc brake for both

Front Fork

RST Hydraulic suspension fork with lock

Max speed

25km/h-32km/h

Driving distance

Approx 45km-60km per charging

Loading capacity

150KGS

N.W/G.W

25kg/30kg

Packing size

155x25x78cm

Container loads

93pcs/20’GP; 226pcs/40’HQ
   

 

High quality saddle,soft and comfortable
Aluminum alloy with suspension
BMS system keep your battery safe from over-charging,over outlet and high temperature.
Powerful mid-drive motor means that hills are no longer a barrier when you ride.
RST Hydraulic suspension fork with lock

Certifications

Company Profile

Packaging & Shipping

FAQ

How to tell if your driveshaft needs replacing

What is the cause of the unbalanced drive shaft? Unstable U-joint? Your car may make clicking noises while driving. If you can hear it from both sides, it might be time to hand it over to the mechanic. If you’re not sure, read on to learn more. Fortunately, there are many ways to tell if your driveshaft needs replacing.

unbalanced

An unbalanced driveshaft can be the source of strange noises and vibrations in your vehicle. To fix this problem, you should contact a professional. You can try a number of things to fix it, including welding and adjusting the weight. The following are the most common methods. In addition to the methods above, you can use standardized weights to balance the driveshaft. These standardized weights are attached to the shaft by welders.
An unbalanced drive shaft typically produces lateral vibrations per revolution. This type of vibration is usually caused by a damaged shaft, missing counterweights, or a foreign object stuck on the drive shaft. On the other hand, torsional vibrations occur twice per revolution, and they are caused by shaft phase shifts. Finally, critical speed vibration occurs when the RPM of the drive shaft exceeds its rated capacity. If you suspect a driveshaft problem, check the following:
Manually adjusting the imbalance of a drive shaft is not the easiest task. To avoid the difficulty of manual balancing, you can choose to use standardized weights. These weights are fixed on the outer circumference of the drive shaft. The operator can manually position the weight on the shaft with special tools, or use a robot. However, manual balancers have many disadvantages.
air-compressor

unstable

When the angular velocity of the output shaft is not constant, it is unstable. The angular velocity of the output shaft is 0.004 at ph = 29.5 and 1.9 at t = 1.9. The angular velocity of the intermediate shaft is not a problem. But when it’s unstable, the torque applied to it is too much for the machine. It might be a good idea to check the tension on the shaft.
An unstable drive shaft can cause a lot of noise and mechanical vibration. It can lead to premature shaft fatigue failure. CZPT studies the effect of shaft vibration on the rotor bearing system. They investigated the effect of flex coupling misalignment on the vibration of the rotor bearing system. They assume that the vibrational response has 2 components: x and y. However, this approach has limited application in many situations.
Experimental results show that the presence of cracks in the output shaft may mask the unbalanced excitation characteristics. For example, the presence of superharmonic peaks on the spectrum is characteristic of cracks. The presence of cracks in the output shaft masks unbalanced excitation characteristics that cannot be detected in the transient response of the input shaft. Figure 8 shows that the frequency of the rotor increases at critical speed and decreases as the shaft passes the natural frequency.

Unreliable

If you’re having trouble driving your car, chances are you’ve run into an unreliable driveshaft. This type of drivetrain can cause the wheels to stick or not turn at all, and also limit the overall control of the car. Whatever the reason, these issues should be resolved as soon as possible. Here are some symptoms to look for when diagnosing a driveshaft fault. Let’s take a closer look.
The first symptom you may notice is an unreliable drive shaft. You may feel vibrations, or hear noises under the vehicle. Depending on the cause, it could be a broken joint or a broken shaft. The good news is that driveshaft repairs are generally relatively inexpensive and take less time than a complete drivetrain replacement. If you’re not sure what to do, CZPT has a guide to replacing the U-connector.
One of the most common signs of an unreliable driveshaft is clanging and vibration. These sounds can be caused by worn bushings, loose U-joints, or damaged center bearings. This can cause severe vibration and noise. You can also feel these vibrations through the steering wheel or the floor. An unreliable driveshaft is a symptom of a bigger problem.
air-compressor

Unreliable U-joints

A car with an unreliable U-joint on the drive shaft can be dangerous. A bad u-joint can prevent the vehicle from driving properly and may even cause you trouble. Unreliable u-joints are cheap to replace and you should try getting parts from quality manufacturers. Unreliable U-joints can cause the car to vibrate in the chassis or gear lever. This is a sure sign that your car has been neglected in maintenance.
Replacing a U-joint is not a complicated task, but it requires special tools and a lot of elbow grease. If you don’t have the right tools, or you’re unfamiliar with mechanical terminology, it’s best to seek the help of a mechanic. A professional mechanic will be able to accurately assess the problem and propose an appropriate solution. But if you don’t feel confident enough, you can replace your own U-connector by following a few simple steps.
To ensure the vehicle’s driveshaft is not damaged, check the U-joint for wear and lubrication. If the U-joint is worn, the metal parts are likely to rub against each other, causing wear. The sooner a problem is diagnosed, the faster it can be resolved. Also, the longer you wait, the more you lose on repairs.

damaged drive shaft

The driveshaft is the part of the vehicle that connects the wheels. If the driveshaft is damaged, the wheels may stop turning and the vehicle may slow down or stop moving completely. It bears the weight of the car itself as well as the load on the road. So even a slight bend or break in the drive shaft can have dire consequences. Even a piece of loose metal can become a lethal missile if dropped from a vehicle.
If you hear a screeching noise or growl from your vehicle when shifting gears, your driveshaft may be damaged. When this happens, damage to the u-joint and excessive slack in the drive shaft can result. These conditions can further damage the drivetrain, including the front half. You should replace the driveshaft as soon as you notice any symptoms. After replacing the driveshaft, you can start looking for signs of wear.
A knocking sound is a sign of damage to the drive shaft. If you hear this sound while driving, it may be due to worn couplings, damaged propshaft bearings, or damaged U-joints. In some cases, the knocking noise can even be caused by a damaged U-joint. When this happens, you may need to replace the entire driveshaft, requiring a new one.
air-compressor

Maintenance fees

The cost of repairing a driveshaft varies widely, depending on the type and cause of the problem. A new driveshaft costs between $300 and $1,300, including labor. Repairing a damaged driveshaft can cost anywhere from $200 to $300, depending on the time required and the type of parts required. Symptoms of a damaged driveshaft include unresponsiveness, vibration, chassis noise and a stationary car.
The first thing to consider when estimating the cost of repairing a driveshaft is the type of vehicle you have. Some vehicles have more than one, and the parts used to make them may not be compatible with other cars. Even if the same car has 2 driveshafts, the damaged ones will cost more. Fortunately, many auto repair shops offer free quotes to repair damaged driveshafts, but be aware that such work can be complicated and expensive.

China OEM Two Wheel MID Drive Brushless Motor 48V 13ah Lithium Battery Electric Electrical Electronic Bike Made in China with Great qualityChina OEM Two Wheel MID Drive Brushless Motor 48V 13ah Lithium Battery Electric Electrical Electronic Bike Made in China with Great quality

China OEM Shuagnye 26 Inch MID Drive Electric Bike 250W Motor 7 Speed with high quality

Product Description

Shuagnye 26 inch mid drive electric bike 250w motor 7 speed

Detail Image

Motor
Different with hub motor, 350w mid dirve CZPT motor is not built into the wheel, but is usually mounted near the bottom of bike frame.  Thus the propulsion is provided at the pedals rather than at the wheel, being eventually applied to the wheel via the bike’s drive train. Because the power is applied through the chain and sprocket, the mid drive electric bike use 250 watts or 350 watts motor power, which can better to protect against fast wear on the drivetrain. 

Display
Equipped with a mid drive motor CZPT LCD display and a three-button control element. The large display panel informs about all important driving data like speed, support level, driving distance, battery status and time. The up and down buttons can adjust Pedal-Assist Level(from 0 to 5). The front light can be switched on at night or in bad weather.

Headlight
A 3W bright front LED light for night riding to ensure your riding safety, and equipped with a mobile phone charging port for your phone on low battery power. 

Brake
To make ensure each rider have a comfortable and security cycling condition, we use a pair of  aluminum alloy brake lever and 160 mechanical disc brake system on each mid drive ebike. Both of them can stop the bicycle front wheel or rear wheel easily when rider press the aluminum alloy lever.

Battery
This mid drive ebike use hidden battery design which is in the bike frame, and was allowed 36V 10AH lithium battery. And on a sigle full charging, this mid drive ebike’s HangZhouage range can get 25-30 HangZhous under E-bike mode and 50-60 HangZhous under Pedal-Assisted mode. Combine 2 modes, help you cycling easily and faster than normal bike. And its removable function make you take out the battery easily to charge at any place where have sockets. And Its charging time is 5-7 hours.

Specification

Model A6AH26MD
Motor 250w/350w CZPT mid drive motor
PAS 1:1 intelligent pedal assistant system/only pedal assistant
Battery 36V10AH hidden lithium battery
Range 1:1 PAS mode,40-60KM
Controller Intelligent brushless 36V
Charger AC100V-240V,42V2A
Charging time 6-8 hours
Max speed 25-30km/h
Loading 100-120kg
Frame Aluminum alloy
Tyre 26″*1.95/27.5″*1.95
Rim Aluminum alloy Rim or Double Rim
Front fork Aluminum alloy suspension
Front brake 160 mechanical disc brake
Rear brake 160 mechanical disc brake
Derailleur 7 gears
Handle bar Aluminum alloy
Brake lever Aluminum,cut-off when braking
Chain Rust resistant chain
Saddle Comfortable saddle
Pedal Aluminum alloy
Front light 3W LED light with USB charging port
warranty (Battery,motor,controller,charger) 1 year
Battery first year capacity > 80%,second year capacity >65%

FAQ
1. What’s the minimum ebike order MOQ?
   MOQ 10pc
2. How long is delivery time?
    2 days to 30 days, depend on model and quantity
3. Can I order spare parts?
   Yes, we have all parts list available for our models
4. How about warranty ?
    alloy frame 36 months, motor 24 months, lithium battery 12 months, controller 12 months.
5. Is sample available?
    Yes, sample order is acceptable, but there will be extra cost.
6. Can i choose the colors ?
    Yes, there would be extra cost.
7. What certificate do you have for electric bicycle?
    Every electric bicycle has CE/EN15194 certificate for EU
8. Could I use my own LOGO or design on goods?
    Yes. When order quantity is big, you can use your own LOGO or your language manual etc.

Company information
      As professional manufacturer engaged  in  the research, development, production, sale and service,we are committed to manufacturing electric bike, electric bike lithium battery, charger, lithium battery BMS and electric bike controller. 

1. Good knowledge on different market can meet special requirements.

2. Real manufacturer with our own factory located in HangZhou,ZheJiang ,China

3. Strong professional technical team ensure to produce the top quality electric bike. 

4. Special cost control system ensure to provide the most favorable price.

5. Rich experience on manufacture field with 14 years’ product electric bike battery.

Our service
our company HangZhou shuangye produce electric bike,ebike kit,ebike battery more than 8 years.
enjoy high repution in our industries.
the more about us you can visit our website:  http://zhsydz
or leave a message for us,we will reply you in first time.

Applications of Spline Couplings

A spline coupling is a highly effective means of connecting 2 or more components. These types of couplings are very efficient, as they combine linear motion with rotation, and their efficiency makes them a desirable choice in numerous applications. Read on to learn more about the main characteristics and applications of spline couplings. You will also be able to determine the predicted operation and wear. You can easily design your own couplings by following the steps outlined below.
splineshaft

Optimal design

The spline coupling plays an important role in transmitting torque. It consists of a hub and a shaft with splines that are in surface contact without relative motion. Because they are connected, their angular velocity is the same. The splines can be designed with any profile that minimizes friction. Because they are in contact with each other, the load is not evenly distributed, concentrating on a small area, which can deform the hub surface.
Optimal spline coupling design takes into account several factors, including weight, material characteristics, and performance requirements. In the aeronautics industry, weight is an important design factor. S.A.E. and ANSI tables do not account for weight when calculating the performance requirements of spline couplings. Another critical factor is space. Spline couplings may need to fit in tight spaces, or they may be subject to other configuration constraints.
Optimal design of spline couplers may be characterized by an odd number of teeth. However, this is not always the case. If the external spline’s outer diameter exceeds a certain threshold, the optimal spline coupling model may not be an optimal choice for this application. To optimize a spline coupling for a specific application, the user may need to consider the sizing method that is most appropriate for their application.
Once a design is generated, the next step is to test the resulting spline coupling. The system must check for any design constraints and validate that it can be produced using modern manufacturing techniques. The resulting spline coupling model is then exported to an optimisation tool for further analysis. The method enables a designer to easily manipulate the design of a spline coupling and reduce its weight.
The spline coupling model 20 includes the major structural features of a spline coupling. A product model software program 10 stores default values for each of the spline coupling’s specifications. The resulting spline model is then calculated in accordance with the algorithm used in the present invention. The software allows the designer to enter the spline coupling’s radii, thickness, and orientation.
splineshaft

Characteristics

An important aspect of aero-engine splines is the load distribution among the teeth. The researchers have performed experimental tests and have analyzed the effect of lubrication conditions on the coupling behavior. Then, they devised a theoretical model using a Ruiz parameter to simulate the actual working conditions of spline couplings. This model explains the wear damage caused by the spline couplings by considering the influence of friction, misalignment, and other conditions that are relevant to the splines’ performance.
In order to design a spline coupling, the user first inputs the design criteria for sizing load carrying sections, including the external spline 40 of the spline coupling model 30. Then, the user specifies torque margin performance requirement specifications, such as the yield limit, plastic buckling, and creep buckling. The software program then automatically calculates the size and configuration of the load carrying sections and the shaft. These specifications are then entered into the model software program 10 as specification values.
Various spline coupling configuration specifications are input on the GUI screen 80. The software program 10 then generates a spline coupling model by storing default values for the various specifications. The user then can manipulate the spline coupling model by modifying its various specifications. The final result will be a computer-aided design that enables designers to optimize spline couplings based on their performance and design specifications.
The spline coupling model software program continually evaluates the validity of spline coupling models for a particular application. For example, if a user enters a data value signal corresponding to a parameter signal, the software compares the value of the signal entered to the corresponding value in the knowledge base. If the values are outside the specifications, a warning message is displayed. Once this comparison is completed, the spline coupling model software program outputs a report with the results.
Various spline coupling design factors include weight, material properties, and performance requirements. Weight is 1 of the most important design factors, particularly in the aeronautics field. ANSI and S.A.E. tables do not consider these factors when calculating the load characteristics of spline couplings. Other design requirements may also restrict the configuration of a spline coupling.

Applications

Spline couplings are a type of mechanical joint that connects 2 rotating shafts. Its 2 parts engage teeth that transfer load. Although splines are commonly over-dimensioned, they are still prone to fatigue and static behavior. These properties also make them prone to wear and tear. Therefore, proper design and selection are vital to minimize wear and tear on splines. There are many applications of spline couplings.
A key design is based on the size of the shaft being joined. This allows for the proper spacing of the keys. A novel method of hobbing allows for the formation of tapered bases without interference, and the root of the keys is concentric with the axis. These features enable for high production rates. Various applications of spline couplings can be found in various industries. To learn more, read on.
FE based methodology can predict the wear rate of spline couplings by including the evolution of the coefficient of friction. This method can predict fretting wear from simple round-on-flat geometry, and has been calibrated with experimental data. The predicted wear rate is reasonable compared to the experimental data. Friction evolution in spline couplings depends on the spline geometry. It is also crucial to consider the lubrication condition of the splines.
Using a spline coupling reduces backlash and ensures proper alignment of mated components. The shaft’s splined tooth form transfers rotation from the splined shaft to the internal splined member, which may be a gear or other rotary device. A spline coupling’s root strength and torque requirements determine the type of spline coupling that should be used.
The spline root is usually flat and has a crown on 1 side. The crowned spline has a symmetrical crown at the centerline of the face-width of the spline. As the spline length decreases toward the ends, the teeth are becoming thinner. The tooth diameter is measured in pitch. This means that the male spline has a flat root and a crowned spline.
splineshaft

Predictability

Spindle couplings are used in rotating machinery to connect 2 shafts. They are composed of 2 parts with teeth that engage each other and transfer load. Spline couplings are commonly over-dimensioned and are prone to static and fatigue behavior. Wear phenomena are also a common problem with splines. To address these issues, it is essential to understand the behavior and predictability of these couplings.
Dynamic behavior of spline-rotor couplings is often unclear, particularly if the system is not integrated with the rotor. For example, when a misalignment is not present, the main response frequency is 1 X-rotating speed. As the misalignment increases, the system starts to vibrate in complex ways. Furthermore, as the shaft orbits depart from the origin, the magnitudes of all the frequencies increase. Thus, research results are useful in determining proper design and troubleshooting of rotor systems.
The model of misaligned spline couplings can be obtained by analyzing the stress-compression relationships between 2 spline pairs. The meshing force model of splines is a function of the system mass, transmitting torque, and dynamic vibration displacement. This model holds when the dynamic vibration displacement is small. Besides, the CZPT stepping integration method is stable and has high efficiency.
The slip distributions are a function of the state of lubrication, coefficient of friction, and loading cycles. The predicted wear depths are well within the range of measured values. These predictions are based on the slip distributions. The methodology predicts increased wear under lightly lubricated conditions, but not under added lubrication. The lubrication condition and coefficient of friction are the key factors determining the wear behavior of splines.

China OEM Shuagnye 26 Inch MID Drive Electric Bike 250W Motor 7 Speed with high qualityChina OEM Shuagnye 26 Inch MID Drive Electric Bike 250W Motor 7 Speed with high quality

China Custom Factory Supply Integrate Frame 28 Inch E Bike CZPT Rear Drive Motor City Road Ebike Electric Electrical Electronic Rickshaw Dirt Ebikes with Good quality

Product Description

Product Description

Electric System
Motor 250w – 750w rear drive hub motor
Battery  Samsung, 8.8Ah – 17.5Ah lithium battery
Controller 14-18A Integrated  controller
Display LED / LCD display
Charger 110-240v AC 50-60HZ, 2A  CE / UL Applied
PAS Speed / Torque sensor
Throttle Thumb / twist throttle

Main Components
Frame 6161 Aluminum Alloy, 20-29 inch
Front Fork Aluminum alloy suspension fork, adjustable with lock.
Rims Double wall, aluminum alloy, 36H*13G
Tires HangZhou / CZPT / Kenda tire
Brake Front&Rear disc brake
Speed Gears Shimano 7 speed
Light Front LED light with horn
Rear Derailleur Shimano 7 speed
Saddle Comfortable Saddle
Pedal Foldable pedal
Stem Aluminum alloy
Brake Levers HangZhoung brake levels, with cut-off function
Crankset Aluminum, 42T – 52T
Fenders Full covered,Alloy / steel / plastic fenders
Rear Rack Rear alloy carrier optional

Performance
Max Speed 42-45km/h
Travel Distance 30km by Throttle, 40-60km by PAS
Loading Capacity 120kg
Charging Time & Life 4-6 Hours, >900 Cycles
N.W./G.W. 28KG/32KG
Carton size 160X26X80CM
Container Loading 80pcs/20ft;  190pcs/40HQ                            

Features

1.500W hub motor(Marked as 250w) with water proof connector

2.Disc brake for both
3.48V 13A Lithium Battery(Samsung cells)
4.LCD display
5.LED Light for Front&Rear battery light
6.PAS& Throttle

 

 

 

 

 

Soft and comfortable saddle
Rear carrier max loading is 150kgs

LED front light with higher brightness

Make a safer cycling
Hidden battery more convenient to charging

1. Warranty policy
 
a.)     For main electronic parts, charger, controller and battery, we provide 6 months warranty.
b.)     For motor, we provide 12 months warranty.
c.)     For frame, handlebar, stem and wheel rim we provide 2 years warranty.
 
 1.1 The following conditions, not including in warranty policy
a.)     Any damages caused by human factor.
b.)     Dismounting any parts without professional technical people.
c.)     Use other parts in our electric bike or scooter.
d.)     Damages caused by traffic accident and other accident.
e.)     The problem caused by overloading.
 
 2. Technical support
 
a.)     We provide “electric circuit diagram” for each model.
b.)     We can train customer’s 1 or 2 technical workers for free.
c.)     When oversea customers meet serious problem, they can not work out by technican, we will dispatch engineer to customer’s company to give help.
 
FAQ
 
 1.  Can I order sample?
 Answer: Yes, we accept sample for trial order?
 
2.  How long for delivery time?
 Answer: For sample order, our delivery time is 20 to 30days; for 1 full container, it’s 25 to 45days.
 
3.  Which colores will be available?
 Answer: Normally, we will introduce the most popular colores to customers. At the same time, we are CZPT to make colores according to customer’s demands.
 
4.  Can I use my logo(sticker) on the electric bike?
 Answer: Yes, we can make customer’s logo(sticker) on the electric bike for 1 full container order.
 
5.  How to delivery to foreign buyer?
 Answer: For sample order, the customer can select by sea or by air.  For full container order, by sea is the  best choice.
 
6.  Need I assemble parts of the electric bike when we get them?
 Answer: Yes, we will take out few parts, like pedals(if have), mirrors(if have), front wheel, front fender, and  rear trunk(if have) before package. Our workers will put these parts in electric bike cartons. And will send 1 professional tool bag to help you assemble. It’s easy to make it.
 
7. Can I mix different models in 1 full container order?
 Answer: Yes, we accept different models in 1 full container.
 
8.  Need I buy spare parts for first order?
 Answer: Yes, you need to buy some spare parts for future service. The quantity depends on your electric  bike order. We will give you advice when you need.
 

Our service
1. OEM Manufacturing welcome: Product, Package…
2. Sample order
3. We will reply you for your inquiry in 24 hours.
4. After sending, we will track the products for you once every 2 days, until you get the products. When you got the goods, test them, and give me a feedback.If you have any questions about the problem, contact with us, we will offer the solve way for you.

Certifications

Company Profile

Packaging & Shipping

FAQ

What You Should Know About Axle Shafts

There are several things you should know about axle shafts. These include what materials they’re made of, how they’re constructed, and the signs of wear and tear. Read on to learn more about axle shafts and how to properly maintain them. Axle shafts are a crucial part of any vehicle. But how can you tell if 1 is worn out? Here are some tips that can help you determine whether it’s time to replace it.

Materials used for axle shafts

When it comes to materials used in axle shafts, there are 2 common types of materials. One is carbon fiber, which is relatively uncommon for linear applications. Carbon fiber shafting is produced by CZPT(r). The main benefit of carbon fiber shafting is its ultra-low weight. A carbon fiber shaft of 20mm diameter weighs just 0.17kg, as opposed to 2.46kg for a steel shaft of the same size.
The other type of material used in axle shafts is forged steel. This material is strong, but it is difficult to machine. The resulting material has residual stresses, voids, and hard spots that make it unsuitable for some applications. A forged steel shaft will not be able to be refinished to its original dimensions. In such cases, the shaft must be machined down to reduce the material’s hardness.
Alternatively, you can choose to purchase a through-hardened shaft. These types of axle shafts are suitable for light cars and those that use single bearings on their hub. However, the increased diameter of the axle shaft will result in less resistance to shock loads and torsional forces. For these applications, it is best to use medium-carbon alloy steel (MCA), which contains nickel and chromium. In addition, you may also need to jack up your vehicle to replace the axle shaft.
The spline features of the axle shaft must mate with the spline feature on the axle assembly. The spline feature has a slight curve that optimizes contact surface area and distribution of load. The process involves hobbing and rolling, and it requires special tooling to form this profile. However, it is important to note that an axle shaft with a cut spline will have a 30% smaller diameter than the corresponding 1 with an involute profile.
Another common material is the 300M alloy, which is a modified 4340 chromoly. This alloy provides additional strength, but is more prone to cracking. For this reason, this alloy isn’t suited for street-driven vehicles. Axle shafts made from this alloy are magnaflushed to detect cracks before they cause catastrophic failure. This heat treatment is not as effective as the other materials, but it is still a good choice for axle shafts.
Driveshaft

Construction

There are 3 basic types of axle shafts: fully floating, three-quarter floating, and semi-floating. Depending on how the shaft is used, the axles can be either stationary or fully floating. Fully floating axle shafts are most common, but there are exceptions. Axle shafts may also be floating or stationary, or they may be fixed. When they are stationary, they are known as non-floating axles.
Different alloys have different properties. High-carbon steels are harder than low-carbon steels, while medium-carbon steels are less ductile. Medium-carbon steel is often used in axle shafts. Some shafts contain additional metals, including silicon, nickel, and copper, for case hardening. High-carbon steels are preferred over low-carbon steels. Axle shafts with high carbon content often have better heat-treatability than OE ones.
A semi-floating axle shaft has a single bearing between the hub and casing, relieving the main shear stress on the shaft but must still withstand other stresses. A half shaft needs to withstand bending loads from side thrust during cornering while transmitting driving torque. A three-quarter floating axle shaft is typically fitted to commercial vehicles that are more capable of handling higher axle loads and torque. However, it is possible to replace or upgrade the axle shaft with a replacement axle shaft, but this will require jacking the vehicle and removing the studs.
A half-floating axle is an alternative to a fixed-length rear axle. This axle design is ideal for mid-size trucks. It supports the weight of the mid-size truck and may support mid-size trucks with high towing capacities. The axle housing supports the inner end of the axle and also takes up the end thrust from the vehicle’s tires. A three-quarter floating axle, on the other hand, is a complex type that is not as simple as a semi-floating axle.
Axle shafts are heavy-duty load-bearing components that transmit rotational force from the rear differential gearbox to the rear wheels. The half shaft and the axle casing support the road wheel. Below is a diagram of different forces that can occur in the axle assembly depending on operating conditions. The total weight of the vehicle’s rear can exert a bending action on the half shaft, and the overhanging section of the shaft can be subject to a shearing force.
Driveshaft

Symptoms of wear out

The constant velocity axle, also called the half shaft, transmits power from the transmission to the wheels, allowing the vehicle to move forward. When it fails, it can result in many problems. Here are 4 common symptoms of a bad CV axle:
Bad vibrations: If you notice any sort of abnormal vibration while driving, this may be a sign of axle damage. Vibrations may accompany a strange noise coming from under the vehicle. You may also notice tire wobble. It is important to repair this problem as it could be harmful to your car’s handling and comfort. A damaged axle is generally accompanied by other problems, including a weak braking response.
A creaking or popping sound: If you hear this noise when turning your vehicle, you probably have a worn out CV axle. When the CV joints lose their balance, the driveshaft is no longer supported by the U-joints. This can cause a lot of vibrations, which can reduce your vehicle’s comfort and safety. Fortunately, there are easy ways to check for worn CV axles.
CV joints: A CV joint is located at each end of the axle shaft. In front-wheel drive vehicles, there are 2 CV joints, 1 on each axle. The outer CV joint connects the axle shaft to the wheel and experiences more movement. In fact, the CV joints are only as good as the boot. The most common symptoms of a failed CV joint include clicking and popping noises while turning or when accelerating.
CV joint: Oftentimes, CV joints wear out half of the axle shaft. While repairing a CV joint is a viable repair, it is more expensive than replacing the axle. In most cases, you should replace the CV joint. Replacement will save you time and money. ACV joints are a vital part of your vehicle’s drivetrain. Even if they are worn, they should be checked if they are loose.
Unresponsive acceleration: The vehicle may be jerky, shuddering, or slipping. This could be caused by a bent axle. The problem may be a loose U-joint or center bearing, and you should have your vehicle inspected immediately by a qualified mechanic. If you notice jerkiness, have a mechanic check the CV joints and other components of the vehicle. If these components are not working properly, the vehicle may be dangerous.
Driveshaft

Maintenance

There are several points of concern regarding the maintenance of axle shafts. It is imperative to check the axle for any damage and to lubricate it. If it is clean, it may be lubricated and is working properly. If not, it will require replacement. The CV boots need to be replaced. A broken axle shaft can result in catastrophic damage to the transmission or even cause an accident. Fortunately, there are several simple ways to maintain the axle shaft.
In addition to oil changes, it is important to check the differential lube level. Some differentials need cleaning or repacking every so often. CZPT Moreno Valley, CA technicians know how to inspect and maintain axles, and they can help you determine if a problem is affecting your vehicle’s performance. Some common signs of axle problems include excessive vibrations, clunking, and a high-pitched howling noise.
If you’ve noticed any of these warning signs, contact your vehicle’s manufacturer. Most manufacturers offer service for their axles. If it’s too rusted or damaged, they’ll replace it for you for free. If you’re in doubt, you can take it to a service center for a repair. They’ll be happy to assist you in any aspect of your vehicle’s maintenance. It’s never too early to begin.
CZPT Moreno Valley, CA technicians are well-versed in the repair of axles and differentials. The CV joint, which connects the car’s transmission to the rear wheels, is responsible for transferring the power from the engine to the wheels. Aside from the CV joint, there are also protective boots on both ends of the axle shaft. The protective boots can tear with age or use. When they tear, they allow grease and debris to escape and get into the joint.
While the CV joint is the most obvious place to replace it, this isn’t a time to ignore this important component. Taking care of the CV joint will protect your car from costly breakdowns at the track. While servicing half shafts can help prevent costly replacement of CV joints, it’s best to do it once a season or halfway through the season. ACV joints are essential for your car’s safety and function.

China Custom Factory Supply Integrate Frame 28 Inch E Bike CZPT Rear Drive Motor City Road Ebike Electric Electrical Electronic Rickshaw Dirt Ebikes with Good qualityChina Custom Factory Supply Integrate Frame 28 Inch E Bike CZPT Rear Drive Motor City Road Ebike Electric Electrical Electronic Rickshaw Dirt Ebikes with Good quality

China factory BBS01 36V 250W 350W CZPT 8fun BBS02 48V 500W 750W MID Drive Motor Electric Bike Conversion Kit near me supplier

Product Description

Product Description

bafang 8fun bbs01 250w 350w bbs02 500w 750w central motor kit

With an integrated speed sensor, this mid-drive motor which is compatible with a 68/100/110/120mm bottom bracket has a rated power of 250w,350w,500w and 750w. a reduction ratio of 1:21.9 and a maximum torque of 160N.m, will provide the rider with great explosive force when starting the system. Hightly strong and efficient, this motor greatly enhances riding joy and is suitable for mountain bikes and sand bikes, which are the favorites of riders who love challenges as well as transport bikes. 

Buyers Show

 

Product Parameters

Motor Power 36V 250W 350W 48v 500W 750W mid motor 
Wheel diameter optional 
Max Torque  80 N.M
Efficiency >= 80
Pedal sensor  Speed sensor 
Color Black
Operating Temperature -20 degree to 45 degree 
Mangnet poles 8
Ip (waterproof) IP65
Bottom Bracket 68mm /100mm/110mm/120mm for choosing
Controller inside the motor 
Certification CE / EN 14764 / ROHS

 

Detailed Photos

 

Packing List

1.bafang bbshd mid crank motor(controller inside)      
2.C965 LCD display or DPC-14 /DPC-18 colour display for choosing
3.chain wheel
4.crank            
5.speed sensor and magnet  
6.brake lever 
7.thumb throttle   
8. Nuts  

1.Packing:
Standard export carton packing, with professional foam protection. 
2.Shipping:
For samples, we deliver goods to customer by UPS,FEDEX,DHL,TNT or EMS.
For mass production order, we deliver goods to customer by air or by sea.

 

Related Products

Bafang G510 mid drive motor BBSHD mid drive motor

36V 11.6ah Frear Racktype Battery 

 

Company Profile

CNEBIKES Co., Ltd is located in HangZhou city ,ZheJiang ,China.  We are just 1 hour from ZheJiang by high-speed train . It is easy for potential customers to come and have a look at our facility and products. We manufacture a variety of products . Our products are reliable and durable. We export to Europe, the USA, Canada, Southeast Asia, Australia and many other countries . Our customers have given us high praise for our products and service. 
 

Warranty terms

motor—>2 years(guarantee replacement in first year, guarantee repair in the next year.)
battery—->1years(guarantee replacement.),
other parts—->half an year 

 

 

What is a driveshaft and how much does it cost to replace one?

Your vehicle is made up of many moving parts. Knowing each part is important because a damaged driveshaft can seriously damage other parts of the car. You may not know how important your driveshaft is, but it’s important to know if you want to fix your car. In this article, we’ll discuss what a driveshaft is, what its symptoms are, and how much it costs to replace a driveshaft.
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Repair damaged driveshafts

A damaged driveshaft does not allow you to turn the wheels freely. It also exposes your vehicle to higher repair costs due to damaged driveshafts. If the drive shaft breaks while the car is in motion, it may cause a crash. Also, it can significantly affect the performance of the car. If you don’t fix the problem right away, you could risk more expensive repairs. If you suspect that the drive shaft is damaged, do the following.
First, make sure the drive shaft is protected from dust, moisture, and dust. A proper driveshaft cover will prevent grease from accumulating in the driveshaft, reducing the chance of further damage. The grease will also cushion the metal-to-metal contact in the constant velocity joints. For example, hitting a soft material is better than hitting a metal wall. A damaged prop shaft can not only cause difficult cornering, but it can also cause the vehicle to vibrate, which can further damage the rest of the drivetrain.
If the driveshaft is damaged, you can choose to fix it yourself or take it to a mechanic. Typically, driveshaft repairs cost around $200 to $300. Parts and labor may vary based on your vehicle type and type of repair. These parts can cost up to $600. However, if you don’t have a mechanical background, it’s better to leave it to a professional.
If you notice that 1 of the 2 drive shafts is worn, it’s time to repair it. Worn bushings and bearings can cause the drive shaft to vibrate unnecessarily, causing it to break and cause further damage. You can also check the center bearing if there is any play in the bearing. If these symptoms occur, it is best to take your car to a mechanic as soon as possible.
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Learn about U-joints

While most vehicles have at least 1 type of U-joint, there are other types available. CV joints (also known as hot rod joints) are used in a variety of applications. The minor axis is shorter than the major axis on which the U-joint is located. In both cases, the U-joints are lubricated at the factory. During servicing, the drive shaft slip joint should be lubricated.
There are 2 main styles of U-joints, including forged and press fit. They are usually held in place by C-clamps. Some of these U-joints have knurls or grooves. When selecting the correct fitting, be sure to measure the entire fitting. To make sure you get the correct size, you can use the size chart or check the manual for your specific model.
In addition to lubrication, the condition of the U-joint should be checked regularly. Lubricate them regularly to avoid premature failure. If you hear a clicking sound when shifting gears, the u-joint space may be misaligned. In this case, the bearing may need to be serviced. If there is insufficient grease in the bearings, the universal joint may need to be replaced.
U-joint is an important part of the automobile transmission shaft. Without them, your car would have no wheeled suspension. Without them, your vehicle will have a rickety front end and a wobbly rear end. Because cars can’t drive on ultra-flat surfaces, they need flexible driveshafts. The U-joint compensates for this by allowing it to move up and down with the suspension.
A proper inspection will determine if your u-joints are loose or worn. It should be easy to pull them out. Make sure not to pull them all the way out. Also, the bearing caps should not move. Any signs of roughness or wear would indicate a need for a new UJ. Also, it is important to note that worn UJs cannot be repaired.

Symptoms of Driveshaft Failure

One of the most common problems associated with a faulty driveshaft is difficulty turning the wheels. This severely limits your overall control over the vehicle. Fortunately, there are several symptoms that could indicate that your driveshaft is failing. You should take immediate steps to determine the cause of the problem. One of the most common causes of driveshaft failure is a weak or faulty reverse gear. Other common causes of driveshaft damage include driving too hard, getting stuck in reverse gear and differential lock.
Another sign of a failed driveshaft is unusual noise while driving. These noises are usually the result of wear on the bushings and bearings that support the drive shaft. They can also cause your car to screech or scratch when switching from drive to idle. Depending on the speed, the noise may be accompanied by vibration. When this happens, it’s time to send your vehicle in for a driveshaft replacement.
One of the most common symptoms of driveshaft failure is noticeable jitter when accelerating. This could be a sign of a loose U-joint or worn center bearing. You should thoroughly inspect your car to determine the cause of these sounds and corresponding symptoms. A certified mechanic can help you determine the cause of the noise. A damaged propshaft can severely limit the drivability of the vehicle.
Regular inspection of the drive shaft can prevent serious damage. Depending on the damage, you can replace the driveshaft for anywhere from $500 to $1,000. Depending on the severity of the damage and the level of repair, the cost will depend on the number of parts that need to be replaced. Do not drive with a bad driveshaft as it can cause a serious crash. There are several ways to avoid this problem entirely.
The first symptom to look for is a worn U-joint. If the U-joint comes loose or moves too much when trying to turn the steering wheel, the driveshaft is faulty. If you see visible rust on the bearing cap seals, you can take your car to a mechanic for a thorough inspection. A worn u-joint can also indicate a problem with the transmission.
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The cost of replacing the drive shaft

Depending on your state and service center, a driveshaft repair can cost as little as $300 or as high as $2,000, depending on the specifics of your car. Labor costs are usually around $70. Prices for the parts themselves range from $400 to $600. Labor costs also vary by model and vehicle make. Ultimately, the decision to repair or replace the driveshaft will depend on whether you need a quick car repair or a full car repair.
Some cars have 2 separate driveshafts. One goes to the front and the other goes to the back. If your car has 4 wheel drive, you will have two. If you’re replacing the axles of an all-wheel-drive car, you’ll need a special part for each axle. Choosing the wrong 1 can result in more expensive repairs. Before you start shopping, you should know exactly how much it will cost.
Depending on the type of vehicle you own, a driveshaft replacement will cost between PS250 and PS500. Luxury cars can cost as much as PS400. However, for safety and the overall performance of the car, replacing the driveshaft may be a necessary repair. The cost of replacing a driveshaft depends on how long your car has been on the road and how much wear and tear it has experienced. There are some symptoms that indicate a faulty drive shaft and you should take immediate action.
Repairs can be expensive, so it’s best to hire a mechanic with experience in the field. You’ll be spending hundreds of dollars a month, but you’ll have peace of mind knowing the job will be done right. Remember that you may want to ask a friend or family member to help you. Depending on the make and model of your car, replacing the driveshaft is more expensive than replacing the parts and doing it yourself.
If you suspect that your drive shaft is damaged, be sure to fix it as soon as possible. It is not advisable to drive a car with abnormal vibration and sound for a long time. Fortunately, there are some quick ways to fix the problem and avoid costly repairs later. If you’ve noticed the symptoms above, it’s worth getting the job done. There are many signs that your driveshaft may need service, including lack of power or difficulty moving the vehicle.

China factory BBS01 36V 250W 350W CZPT 8fun BBS02 48V 500W 750W MID Drive Motor Electric Bike Conversion Kit near me supplier China factory BBS01 36V 250W 350W CZPT 8fun BBS02 48V 500W 750W MID Drive Motor Electric Bike Conversion Kit near me supplier

China Standard ODM Color 7 Speed CZPT MID-Drive Motor 2 Break Lever Electric Bike with Great quality

Product Description

Company Profile

        ZheJiang GT Technology Co., Ltd is founded in 2571, located in HangZhou city, which is around 1 hour car driving or 30 minutes high speed train far away from ZheJiang Xihu (West Lake) Dis.ao airport, a factory integrated with R&D, manufacture and sales for electric scooter and electric bike, 2000 square meters, 15 workers, ISO9001 and ISO14001 certified.

 

Product Description

26” Mid-drive fat tire with suspension fork

Motor:
BAFANG M620  48V1000W Mid-drive 

Display:
BAFANG LCD 5-levels

SHIMANO:
SHIMANO 7S shifter+7S deraileur +7S Cassette

Product Parameters

Model Name GT-EB26FC
Frame 26″*17″ aluminum alloy
Fork 26” suspension alloy crowns, with lock
Brake system Logan Hydraulic disc brake
Crankset Including in CZPT M620 1000W mid-motor
Chain KMC Z7
Gear system SHIMANO 7S shifter+7S deraileur +7S Cassette
Tire HangZhou 26*4.0AV
Motor BAFANG M620 1000W Mid-drive 48V1000W
Battery 48V17.5Ah LG cells lithium
Charger 54.6V3A
System LCD 5-levels, sensor for speed, power display
Packing  95% 1 bike per 1 export carton box

 

FAQ

1.Q:Can I get a sample and how long will it take?
A: Yes. We can supply sample. We will delivery after receiving your sample fee and freight cost in 7-10 days.
2. Q: Can I do customized product?
A: Yes. We can customized all your requirements like color, logo, design, package, and so on.
3. Q: What is the payment terms?
A: T/T
4.Q:Can I mix different models in 1 container?
A: Yes, you can.
5. Q:What’s the delivery time?
A: It will take about 45-60 days to finish an order.
 

Why Checking the Drive Shaft is Important

If you hear clicking noises while driving, your driveshaft may need repair. An experienced mechanic can tell if the noise is coming from 1 side or both sides. This problem is usually related to the torque converter. Read on to learn why it’s so important to have your driveshaft inspected by an auto mechanic. Here are some symptoms to look for. Clicking noises can be caused by many different things. You should first check if the noise is coming from the front or the rear of the vehicle.
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hollow drive shaft

Hollow driveshafts have many benefits. They are light and reduce the overall weight of the vehicle. The largest manufacturer of these components in the world is CZPT. They also offer lightweight solutions for various applications, such as high-performance axles. CZPT driveshafts are manufactured using state-of-the-art technology. They offer excellent quality at competitive prices.
The inner diameter of the hollow shaft reduces the magnitude of the internal forces, thereby reducing the amount of torque transmitted. Unlike solid shafts, hollow shafts are getting stronger. The material inside the hollow shaft is slightly lighter, which further reduces its weight and overall torque. However, this also increases its drag at high speeds. This means that in many applications hollow driveshafts are not as efficient as solid driveshafts.
A conventional hollow drive shaft consists of a first rod 14 and a second rod 14 on both sides. The first rod is connected with the second rod, and the second rod extends in the rotation direction. The 2 rods are then friction welded to the central area of ​​the hollow shaft. The frictional heat generated during the relative rotation helps to connect the 2 parts. Hollow drive shafts can be used in internal combustion engines and environmentally-friendly vehicles.
The main advantage of a hollow driveshaft is weight reduction. The splines of the hollow drive shaft can be designed to be smaller than the outside diameter of the hollow shaft, which can significantly reduce weight. Hollow shafts are also less likely to jam compared to solid shafts. Hollow driveshafts are expected to eventually occupy the world market for automotive driveshafts. Its advantages include fuel efficiency and greater flexibility compared to solid prop shafts.

Cardan shaft

Cardan shafts are a popular choice in industrial machinery. They are used to transmit power from 1 machine to another and are available in a variety of sizes and shapes. They are available in a variety of materials, including steel, copper, and aluminum. If you plan to install 1 of these shafts, it is important to know the different types of Cardan shafts available. To find the best option, browse the catalog.
Telescopic or “Cardan” prop shafts, also known as U-joints, are ideal for efficient torque transfer between the drive and output system. They are efficient, lightweight, and energy-efficient. They employ advanced methods, including finite element modeling (FEM), to ensure maximum performance, weight, and efficiency. Additionally, the Cardan shaft has an adjustable length for easy repositioning.
Another popular choice for driveshafts is the Cardan shaft, also known as a driveshaft. The purpose of the driveshaft is to transfer torque from the engine to the wheels. They are typically used in high-performance car engines. Some types are made of brass, iron, or steel and have unique surface designs. Cardan shafts are available in inclined and parallel configurations.
Single Cardan shafts are a common replacement for standard Cardan shafts, but if you are looking for dual Cardan shafts for your vehicle, you will want to choose the 1310 series. This type is great for lifted jeeps and requires a CV-compatible transfer case. Some even require axle spacers. The dual Cardan shafts are also designed for lifts, which means it’s a good choice for raising and lowering jeeps.
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universal joint

Cardan joints are a good choice for drive shafts when operating at a constant speed. Their design allows a constant angular velocity ratio between the input and output shafts. Depending on the application, the recommended speed limit may vary depending on the operating angle, transmission power, and application. These recommendations must be based on pressure. The maximum permissible speed of the drive shaft is determined by determining the angular acceleration.
Because gimbal joints don’t require grease, they can last a long time but eventually fail. If they are poorly lubricated or dry, they can cause metal-to-metal contact. The same is true for U-joints that do not have oil filling capability. While they have a long lifespan, it can be difficult to spot warning signs that could indicate impending joint failure. To avoid this, check the drive shaft regularly.
U-joints should not exceed 70 percent of their lateral critical velocity. However, if this speed is exceeded, the part will experience unacceptable vibration, reducing its useful life. To determine the best U-joint for your application, please contact your universal joint supplier. Typically, lower speeds do not require balancing. In these cases, you should consider using a larger pitch diameter to reduce axial force.
To minimize the angular velocity and torque of the output shaft, the 2 joints must be in phase. Therefore, the output shaft angular displacement does not completely follow the input shaft. Instead, it will lead or lag. Figure 3 illustrates the angular velocity variation and peak displacement lead of the gimbal. The ratios are shown below. The correct torque for this application is 1360 in-Ibs.

Refurbished drive shaft

Refurbished driveshafts are a good choice for a number of reasons. They are cheaper than brand new alternatives and generally just as reliable. Driveshafts are essential to the function of any car, truck, or bus. These parts are made of hollow metal tubes. While this helps reduce weight and expense, it is vulnerable to external influences. If this happens, it may crack or bend. If the shaft suffers this type of damage, it can cause serious damage to the transmission.
A car’s driveshaft is a critical component that transmits torque from the engine to the wheels. A1 Drive Shaft is a global supplier of automotive driveshafts and related components. Their factory has the capability to refurbish and repair almost any make or model of driveshafts. Refurbished driveshafts are available for every make and model of vehicle. They can be found on the market for a variety of vehicles, including passenger cars, trucks, vans, and SUVs.
Unusual noises indicate that your driveshaft needs to be replaced. Worn U-joints and bushings can cause excessive vibration. These components cause wear on other parts of the drivetrain. If you notice any of these symptoms, please take your vehicle to the AAMCO Bay Area Center for a thorough inspection. If you suspect damage to the driveshaft, don’t wait another minute – it can be very dangerous.
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The cost of replacing the drive shaft

The cost of replacing a driveshaft varies, but on average, this repair costs between $200 and $1,500. While this price may vary by vehicle, the cost of parts and labor is generally equal. If you do the repair yourself, you should know how much the parts and labor will cost before you start work. Some parts can be more expensive than others, so it’s a good idea to compare the cost of several locations before deciding where to go.
If you notice any of these symptoms, you should seek a repair shop immediately. If you are still not sure if the driveshaft is damaged, do not drive the car any distance until it is repaired. Symptoms to look for include lack of power, difficulty moving the car, squeaking, clanking, or vibrating when the vehicle is moving.
Parts used in drive shafts include center support bearings, slip joints, and U-joints. The price of the driveshaft varies by vehicle and may vary by model of the same year. Also, different types of driveshafts require different repair methods and are much more expensive. Overall, though, a driveshaft replacement costs between $300 and $1,300. The process may take about an hour, depending on the vehicle model.
Several factors can lead to the need to replace the drive shaft, including bearing corrosion, damaged seals, or other components. In some cases, the U-joint indicates that the drive shaft needs to be replaced. Even if the bearings and u-joints are in good condition, they will eventually break and require the replacement of the drive shaft. However, these parts are not cheap, and if a damaged driveshaft is a symptom of a bigger problem, you should take the time to replace the shaft.

China Standard ODM Color 7 Speed CZPT MID-Drive Motor 2 Break Lever Electric Bike with Great qualityChina Standard ODM Color 7 Speed CZPT MID-Drive Motor 2 Break Lever Electric Bike with Great quality

China best 36V 350W City Chinese Electric Bike E-Bikes Motor Kit Cycle with Disc Brake wholesaler

Product Description

36V 350W city chinese electric bike e-bikes motor kit cycle with Disc brake 

  1 Product Specification  

Electric Specification Bodywork Specification
Motor Type Rear Drive Frame Aluminum Alloy 6061#
Motor Power 36V350W Tyres 26″*1.95inch KENDA
Working Style PAS & Throttle,1:1 with 0-5 Level Rim Alloy Single Wall
Controller 36V15A Brake F/R: Disc brake 
Display LCD display  Brake Lever Cut-off while braking 
Light F: LED light QD139-2 Front Fork Steel, / Seat post: Steel 
Battery  Lithium battery Samung 36V10.4AH Derailleur Shimano 7 speed tourney
Charger 50-60HZ, AC90-240V Other Trumb Throttle
Performance Business Item
Max Speed 25-28km/h Available Colors Black,white, silver, red, etc
Range 35-45KM Body Size  
Max Loading 100KG Packing Size 1550*280*870
Climbing 20% N.W / G.W 28kgs/38kgs
Charge Time 5-6H / Cricle Life > 600times Container Load  

 2 Company information
    HangZhou Merry Gold Machinary Co.,ltd, is a manufacturer and trader specialized in machinery and electronics products such as ebike electric bicycle. We mainly offer motors, electric bicycles,electric vehicles and its spare parts, bicycle and its spare parts etc. We have exported our electric bikes and its rated products to over 60 countries in the world, especially in US, Canada, Mexico, France, Spain, Italy, Germany, Australia, New Zealand, Russia, North Europe etc All of our products can comply with international quality standards and are greatly meeting in a variety of markets around the world. For example, we have EN15194 European certificate, CE certificate and EEC certificate. These certificates ensure us can enter into any country. We can also provide OEMand ODM service if you need. We are located in HangZhou city, ZheJiang province, which is about 150km from ZheJiang city. If you are interested in any of our products or discuss a customized order, please feel free to contact us and kindly get back your comments to us. We are sure any of your feedback will get our prompt attention & reply. We are looking forward to establishing successful business relationships with clients all over the world.

3 packaging and shipping
We fold electric bicycle and wrap them with foamed plastic films and pack them in cartons
The electric bikes ordered by our clients can be shipped by sea, air and train.

4 Our service

1. OEM Manufacturing Welcome: product, package, etc…
2. Sample Order
3. All inquiries will be replied in 24 hours
4. After the sending,we will track the shipment for you each 2 days until it arrives. When you got the electric bicycle, please test them and give us a feedback. if you have any question,  please contact us. we will offer the solve way for you.

5 Certificates

6 FAQ

Q1. What is your terms of packing?
A: Generally,electric bicycle is packed with foam protection and foam block inside, cartons outside. If you have any legally registered
patent, we can pack the electric bicycle in your branded boxed after getting your authorization letters.

Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of electric bicycle and packages before you pay the balance.

Q3. What is your terms of delivery?
A: EXW, FOB, CFR, CIF, DDU.

Q4. How about your delivery time?
A: Generally, it will take 30-60 days after the receipt of deposit payment. If there are materials stocked for this style, then it
takes around 15-30 days.

Q5. Can you produce according to the samples?
A: Yes, the production can be arranged depending on your samples or technical drawings. We can build the molds and fixtures.

Q6. What is your sample policy?
A: The samples can be supplied if there are ready parts in stock, and the client will cover the sample and courier cost.

Q7. Do you test all of your electric bike bicycle before delivery?
A: Yes, the goods are all 100% test and inspected before delivery.

Q8. How do you make our business long-term and good relationships?
A: 1. We keep quality and competitive price to ensure our clients’ benefit;
2. We respect every customer as our friend and we sincerely do business no matter where they come from.

 

 

Driveshaft structure and vibrations associated with it

The structure of the drive shaft is critical to its efficiency and reliability. Drive shafts typically contain claw couplings, rag joints and universal joints. Other drive shafts have prismatic or splined joints. Learn about the different types of drive shafts and how they work. If you want to know the vibrations associated with them, read on. But first, let’s define what a driveshaft is.
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transmission shaft

As the demand on our vehicles continues to increase, so does the demand on our drive systems. Higher CO2 emission standards and stricter emission standards increase the stress on the drive system while improving comfort and shortening the turning radius. These and other negative effects can place significant stress and wear on components, which can lead to driveshaft failure and increase vehicle safety risks. Therefore, the drive shaft must be inspected and replaced regularly.
Depending on your model, you may only need to replace 1 driveshaft. However, the cost to replace both driveshafts ranges from $650 to $1850. Additionally, you may incur labor costs ranging from $140 to $250. The labor price will depend on your car model and its drivetrain type. In general, however, the cost of replacing a driveshaft ranges from $470 to $1850.
Regionally, the automotive driveshaft market can be divided into 4 major markets: North America, Europe, Asia Pacific, and Rest of the World. North America is expected to dominate the market, while Europe and Asia Pacific are expected to grow the fastest. Furthermore, the market is expected to grow at the highest rate in the future, driven by economic growth in the Asia Pacific region. Furthermore, most of the vehicles sold globally are produced in these regions.
The most important feature of the driveshaft is to transfer the power of the engine to useful work. Drive shafts are also known as propeller shafts and cardan shafts. In a vehicle, a propshaft transfers torque from the engine, transmission, and differential to the front or rear wheels, or both. Due to the complexity of driveshaft assemblies, they are critical to vehicle safety. In addition to transmitting torque from the engine, they must also compensate for deflection, angular changes and length changes.

type

Different types of drive shafts include helical shafts, gear shafts, worm shafts, planetary shafts and synchronous shafts. Radial protruding pins on the head provide a rotationally secure connection. At least 1 bearing has a groove extending along its circumferential length that allows the pin to pass through the bearing. There can also be 2 flanges on each end of the shaft. Depending on the application, the shaft can be installed in the most convenient location to function.
Propeller shafts are usually made of high-quality steel with high specific strength and modulus. However, they can also be made from advanced composite materials such as carbon fiber, Kevlar and fiberglass. Another type of propeller shaft is made of thermoplastic polyamide, which is stiff and has a high strength-to-weight ratio. Both drive shafts and screw shafts are used to drive cars, ships and motorcycles.
Sliding and tubular yokes are common components of drive shafts. By design, their angles must be equal or intersect to provide the correct angle of operation. Unless the working angles are equal, the shaft vibrates twice per revolution, causing torsional vibrations. The best way to avoid this is to make sure the 2 yokes are properly aligned. Crucially, these components have the same working angle to ensure smooth power flow.
The type of drive shaft varies according to the type of motor. Some are geared, while others are non-geared. In some cases, the drive shaft is fixed and the motor can rotate and steer. Alternatively, a flexible shaft can be used to control the speed and direction of the drive. In some applications where linear power transmission is not possible, flexible shafts are a useful option. For example, flexible shafts can be used in portable devices.
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put up

The construction of the drive shaft has many advantages over bare metal. A shaft that is flexible in multiple directions is easier to maintain than a shaft that is rigid in other directions. The shaft body and coupling flange can be made of different materials, and the flange can be made of a different material than the main shaft body. For example, the coupling flange can be made of steel. The main shaft body is preferably flared on at least 1 end, and the at least 1 coupling flange includes a first generally frustoconical projection extending into the flared end of the main shaft body.
The normal stiffness of fiber-based shafts is achieved by the orientation of parallel fibers along the length of the shaft. However, the bending stiffness of this shaft is reduced due to the change in fiber orientation. Since the fibers continue to travel in the same direction from the first end to the second end, the reinforcement that increases the torsional stiffness of the shaft is not affected. In contrast, a fiber-based shaft is also flexible because it uses ribs that are approximately 90 degrees from the centerline of the shaft.
In addition to the helical ribs, the drive shaft 100 may also contain reinforcing elements. These reinforcing elements maintain the structural integrity of the shaft. These reinforcing elements are called helical ribs. They have ribs on both the outer and inner surfaces. This is to prevent shaft breakage. These elements can also be shaped to be flexible enough to accommodate some of the forces generated by the drive. Shafts can be designed using these methods and made into worm-like drive shafts.

vibration

The most common cause of drive shaft vibration is improper installation. There are 5 common types of driveshaft vibration, each related to installation parameters. To prevent this from happening, you should understand what causes these vibrations and how to fix them. The most common types of vibration are listed below. This article describes some common drive shaft vibration solutions. It may also be beneficial to consider the advice of a professional vibration technician for drive shaft vibration control.
If you’re not sure if the problem is the driveshaft or the engine, try turning on the stereo. Thicker carpet kits can also mask vibrations. Nonetheless, you should contact an expert as soon as possible. If vibration persists after vibration-related repairs, the driveshaft needs to be replaced. If the driveshaft is still under warranty, you can repair it yourself.
CV joints are the most common cause of third-order driveshaft vibration. If they are binding or fail, they need to be replaced. Alternatively, your CV joints may just be misaligned. If it is loose, you can check the CV connector. Another common cause of drive shaft vibration is improper assembly. Improper alignment of the yokes on both ends of the shaft can cause them to vibrate.
Incorrect trim height can also cause driveshaft vibration. Correct trim height is necessary to prevent drive shaft wobble. Whether your vehicle is new or old, you can perform some basic fixes to minimize problems. One of these solutions involves balancing the drive shaft. First, use the hose clamps to attach the weights to it. Next, attach an ounce of weight to it and spin it. By doing this, you minimize the frequency of vibration.
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cost

The global driveshaft market is expected to exceed (xxx) million USD by 2028, growing at a compound annual growth rate (CAGR) of XX%. Its soaring growth can be attributed to several factors, including increasing urbanization and R&D investments by leading market players. The report also includes an in-depth analysis of key market trends and their impact on the industry. Additionally, the report provides a comprehensive regional analysis of the Driveshaft Market.
The cost of replacing the drive shaft depends on the type of repair required and the cause of the failure. Typical repair costs range from $300 to $750. Rear-wheel drive cars usually cost more. But front-wheel drive vehicles cost less than four-wheel drive vehicles. You may also choose to try repairing the driveshaft yourself. However, it is important to do your research and make sure you have the necessary tools and equipment to perform the job properly.
The report also covers the competitive landscape of the Drive Shafts market. It includes graphical representations, detailed statistics, management policies, and governance components. Additionally, it includes a detailed cost analysis. Additionally, the report presents views on the COVID-19 market and future trends. The report also provides valuable information to help you decide how to compete in your industry. When you buy a report like this, you are adding credibility to your work.
A quality driveshaft can improve your game by ensuring distance from the tee and improving responsiveness. The new material in the shaft construction is lighter, stronger and more responsive than ever before, so it is becoming a key part of the driver. And there are a variety of options to suit any budget. The main factor to consider when buying a shaft is its quality. However, it’s important to note that quality doesn’t come cheap and you should always choose an axle based on what your budget can handle.

China best 36V 350W City Chinese Electric Bike E-Bikes Motor Kit Cycle with Disc Brake wholesaler China best 36V 350W City Chinese Electric Bike E-Bikes Motor Kit Cycle with Disc Brake wholesaler

China Custom CZPT Bbshd 48V 1000W MID Drive Central Motor Electric Bike Conversion Kit with Great quality

Product Description

 

Bafang BBSHD 48v 1000w mid drive motor kit electric bike conversion kit bb68/100/120mm
 

With an integrated speed sensor, this mid-drive motor which is compatible with a 68/100/110/120mm bottom bracket has a rated power of 1000w, a reduction ratio of 1:21.9 and a maximum torque of 160N.m, will provide the rider with great explosive force when starting the system. Hightly strong and efficient, this motor greatly enhances riding joy and is suitable for mountain bikes and sand bikes, which are the favorites of riders who love challenges as well as transport bikes. 

 

Packing list

1.bafang bbshd mid crank motor(controller inside)      
2.C965 LCD display or DPC-14 colour display for choosing
3.chain wheel
4.crank            
5.speed sensor and magnet  
6.brake lever 
7.thumb throttle   
8. Nuts  

Motor Specs:

Motor Power BBS-HD/BBS03 48v 1000w mid motor 
rated power 1000w 
Wheel diameter optional 
Max Torque  160 N.M
Efficiency >= 80
Pedal sensor  Speed sensor 
Color Black
Operating Temperature -20 degree to 45 degree 
Mangnet poles 8
Ip (waterproof) IP65
Bottom Bracket 68mm /100mm/110mm/120mm for choosing
Controller inside the motor 
Certification CE / EN 14764 / ROHS

Packing and shipping
1.Packing:
Standard export carton packing, with professional foam protection. 
2.Shipping:
For samples, we deliver goods to customer by UPS,FEDEX,DHL,TNT or EMS.
For mass production order, we deliver goods to customer by air or by sea.

 

Warranty terms

motor—>2 years(guarantee replacement in first year, guarantee repair in the next year.)
battery—->1years(guarantee replacement.),
other parts—->half an year 

Company information

CNEBIKES Co., Ltd is located in HangZhou city ,ZheJiang ,China.  We are just 1 hour from ZheJiang by high-speed train . It is easy for potential customers to come and have a look at our facility and products.
We manufacture a variety of products . Our products are reliable and durable. We export to Europe, the USA, Canada, Southeast Asia, Australia and many other countries . Our customers have given us high praise for our products and service. 

Optional Batteries for Choosing :

 Any requirements and questions, please contact with me!

 

Guide to Drive Shafts and U-Joints

If you’re concerned about the performance of your car’s driveshaft, you’re not alone. Many car owners are unaware of the warning signs of a failed driveshaft, but knowing what to look for can help you avoid costly repairs. Here is a brief guide on drive shafts, U-joints and maintenance intervals. Listed below are key points to consider before replacing a vehicle driveshaft.
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Symptoms of Driveshaft Failure

Identifying a faulty driveshaft is easy if you’ve ever heard a strange noise from under your car. These sounds are caused by worn U-joints and bearings supporting the drive shaft. When they fail, the drive shafts stop rotating properly, creating a clanking or squeaking sound. When this happens, you may hear noise from the side of the steering wheel or floor.
In addition to noise, a faulty driveshaft can cause your car to swerve in tight corners. It can also lead to suspended bindings that limit overall control. Therefore, you should have these symptoms checked by a mechanic as soon as you notice them. If you notice any of the symptoms above, your next step should be to tow your vehicle to a mechanic. To avoid extra trouble, make sure you’ve taken precautions by checking your car’s oil level.
In addition to these symptoms, you should also look for any noise from the drive shaft. The first thing to look for is the squeak. This was caused by severe damage to the U-joint attached to the drive shaft. In addition to noise, you should also look for rust on the bearing cap seals. In extreme cases, your car can even shudder when accelerating.
Vibration while driving can be an early warning sign of a driveshaft failure. Vibration can be due to worn bushings, stuck sliding yokes, or even springs or bent yokes. Excessive torque can be caused by a worn center bearing or a damaged U-joint. The vehicle may make unusual noises in the chassis system.
If you notice these signs, it’s time to take your car to a mechanic. You should check regularly, especially heavy vehicles. If you’re not sure what’s causing the noise, check your car’s transmission, engine, and rear differential. If you suspect that a driveshaft needs to be replaced, a certified mechanic can replace the driveshaft in your car.
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Drive shaft type

Driveshafts are used in many different types of vehicles. These include four-wheel drive, front-engine rear-wheel drive, motorcycles and boats. Each type of drive shaft has its own purpose. Below is an overview of the 3 most common types of drive shafts:
The driveshaft is a circular, elongated shaft that transmits torque from the engine to the wheels. Drive shafts often contain many joints to compensate for changes in length or angle. Some drive shafts also include connecting shafts and internal constant velocity joints. Some also include torsional dampers, spline joints, and even prismatic joints. The most important thing about the driveshaft is that it plays a vital role in transmitting torque from the engine to the wheels.
The drive shaft needs to be both light and strong to move torque. While steel is the most commonly used material for automotive driveshafts, other materials such as aluminum, composites, and carbon fiber are also commonly used. It all depends on the purpose and size of the vehicle. Precision Manufacturing is a good source for OEM products and OEM driveshafts. So when you’re looking for a new driveshaft, keep these factors in mind when buying.
Cardan joints are another common drive shaft. A universal joint, also known as a U-joint, is a flexible coupling that allows 1 shaft to drive the other at an angle. This type of drive shaft allows power to be transmitted while the angle of the other shaft is constantly changing. While a gimbal is a good option, it’s not a perfect solution for all applications.
CZPT, Inc. has state-of-the-art machinery to service all types of drive shafts, from small cars to race cars. They serve a variety of needs, including racing, industry and agriculture. Whether you need a new drive shaft or a simple adjustment, the staff at CZPT can meet all your needs. You’ll be back on the road soon!

U-joint

If your car yoke or u-joint shows signs of wear, it’s time to replace them. The easiest way to replace them is to follow the steps below. Use a large flathead screwdriver to test. If you feel any movement, the U-joint is faulty. Also, inspect the bearing caps for damage or rust. If you can’t find the u-joint wrench, try checking with a flashlight.
When inspecting U-joints, make sure they are properly lubricated and lubricated. If the joint is dry or poorly lubricated, it can quickly fail and cause your car to squeak while driving. Another sign that a joint is about to fail is a sudden, excessive whine. Check your u-joints every year or so to make sure they are in proper working order.
Whether your u-joint is sealed or lubricated will depend on the make and model of your vehicle. When your vehicle is off-road, you need to install lubricable U-joints for durability and longevity. A new driveshaft or derailleur will cost more than a U-joint. Also, if you don’t have a good understanding of how to replace them, you may need to do some transmission work on your vehicle.
When replacing the U-joint on the drive shaft, be sure to choose an OEM replacement whenever possible. While you can easily repair or replace the original head, if the u-joint is not lubricated, you may need to replace it. A damaged gimbal joint can cause problems with your car’s transmission or other critical components. Replacing your car’s U-joint early can ensure its long-term performance.
Another option is to use 2 CV joints on the drive shaft. Using multiple CV joints on the drive shaft helps you in situations where alignment is difficult or operating angles do not match. This type of driveshaft joint is more expensive and complex than a U-joint. The disadvantages of using multiple CV joints are additional length, weight, and reduced operating angle. There are many reasons to use a U-joint on a drive shaft.
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maintenance interval

Checking U-joints and slip joints is a critical part of routine maintenance. Most vehicles are equipped with lube fittings on the driveshaft slip joint, which should be checked and lubricated at every oil change. CZPT technicians are well-versed in axles and can easily identify a bad U-joint based on the sound of acceleration or shifting. If not repaired properly, the drive shaft can fall off, requiring expensive repairs.
Oil filters and oil changes are other parts of a vehicle’s mechanical system. To prevent rust, the oil in these parts must be replaced. The same goes for transmission. Your vehicle’s driveshaft should be inspected at least every 60,000 miles. The vehicle’s transmission and clutch should also be checked for wear. Other components that should be checked include PCV valves, oil lines and connections, spark plugs, tire bearings, steering gearboxes and brakes.
If your vehicle has a manual transmission, it is best to have it serviced by CZPT’s East Lexington experts. These services should be performed every 2 to 4 years or every 24,000 miles. For best results, refer to the owner’s manual for recommended maintenance intervals. CZPT technicians are experienced in axles and differentials. Regular maintenance of your drivetrain will keep it in good working order.

China Custom CZPT Bbshd 48V 1000W MID Drive Central Motor Electric Bike Conversion Kit with Great qualityChina Custom CZPT Bbshd 48V 1000W MID Drive Central Motor Electric Bike Conversion Kit with Great quality

China wholesaler 2017 Full Suspension MID Drive CZPT Motor 350W Fat Tire Mountain Electric Bike with Hot selling

Product Description

We have kinds of options regarding the wheels size, battery packs, brake levers, tires, controllers, etc.
Motors could be 250w/350w/500w/750w/1000w/1500w/2000w/3000w
Any comments and requirements are welcome!

Main Features
 250w-750w geared brushless motor 8FUN, SOF, MXUS brand
 36v/48v lithium battery, Panasonic, Samsung, Sanyo
 OEM options of frame and wheel colors
Main Components
  AMS-TDE-09 other options
 Motor: 36v350W-1000W MID motor 48V 350W/500W/750w
 Battery: 36V10Ah Lithium battery 48v 11.6Ah much more powerful
 Display : LED 790 3 level LCD 5 level display
 Brake system Disc Brake Hydraulic disc brake
 PAS: 1:1 intelligent PAS systerm
 Charger: 110~240V, 50-60Hz, Plug according to final market requirement 
 Brake lever: Cheap option or TEKTRO brand
 Wheel: 26″x4.0 W/O wholes
 Controller: 36V/48V smart controller
 Fork: suspension fork
Optional Components
 F/R Light LED
 Throttle: Thumb or Twist throttle
 Color: shinning black/mat black/white/black/orange/blue/green/any other specilized
 Seat post: suspension
 Packing
 G.W. 28 kgs
 N.W: 35 kgs
 Carton size: 156*38*80 CM
 Container QTY: 60pcs/20’GP, 120pcs/40’GP

 

Company Information

HangZhou Aimos Technology Co.,Ltd, located in HangZhou City, ZheJiang  Province,one hour hi-speed 
train from ZheJiang  and HangZhou.
The company is engaged in export kinds of electric products and techniques of Electric Bikes , electric
bike kits, and electric scooters, and so on.

 

Our Services

1. Our products are targeted for the overseas demanding market, and we have a strong sense of
   responsibility for the quality, we consider quality as our life.

2. We choose good suppliers to work together; the main fittings are mostly from Japan, ZheJiang
    and other  top suppliers.

3. We carry on periodic training to our staffs, in order to enhance their consciousness of quality.

4. All the components should be checked carefully before assembling, thus, we can make sure that
    the broken or deficient components will not be fixed to the electric bikes.

5. Each electric bikes will be strictly inspected before packing and shipping out to insure that the
    could be satisfied with you.

6. We always try to improve the quality of our products, meanwhile we pay much attention to our    
     customer service,  we will provide a certain amount of free spare part to you when you
     place a quantity order, quality problems will be solved at the first time when you come across it.

 

FAQ

1. Q: Can I get some samples? 
    A:we offer sample for quality check. Considering electric bike as big item with certern value,we don’t
       offer free sample and transportation fee is not contained in sample price .

2. Q: Do you have the products in stock? 
    A:  we do have product in stock for demestic sale,it may not suit your demand.

3. Q: What’s the delivery time? 
    A: It usually takes about 15-25 working days
         But the exact delivery time might be different for different orders or at different time.Once we
         confirmed all detail of order, we’ll put all source into it.

4. Q: Can I mix different models in 1 container? 
    A: Yes, different models can be mixed in 1 container.

5. Q: Should we pay the high taxes? 
    A:  We can make a low-value invoice to help you clearing Customs and avoid the taxes.

6. Q:Do you accept Paypal ? 
    A: Yes, we accept Paypal. Besides, we offer bank transfer and Western Union.

7. Q:Why choose you?
    A:Strong quality controll : We test and check all the parts before on produce line
       Check and test esch unit when it ready.

8.Q:When you on the line for service
   A: We ussally on the line at 8:30am to 5:30pm ZheJiang time. Otherwise,
       We also can do service for you after the working time.

9.Q:Are you a factory or a import and export company?
   A:We are a manufacture ,So as a professional manufacture we not only can supply the bike we
       have, We also can design for you if you have the draft

 
 

Drive shaft type

The driveshaft transfers torque from the engine to the wheels and is responsible for the smooth running of the vehicle. Its design had to compensate for differences in length and angle. It must also ensure perfect synchronization between its joints. The drive shaft should be made of high-grade materials to achieve the best balance of stiffness and elasticity. There are 3 main types of drive shafts. These include: end yokes, tube yokes and tapered shafts.
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tube yoke

Tube yokes are shaft assemblies that use metallic materials as the main structural component. The yoke includes a uniform, substantially uniform wall thickness, a first end and an axially extending second end. The first diameter of the drive shaft is greater than the second diameter, and the yoke further includes a pair of opposing lugs extending from the second end. These lugs have holes at the ends for attaching the axle to the vehicle.
By retrofitting the driveshaft tube end into a tube fork with seat. This valve seat transmits torque to the driveshaft tube. The fillet weld 28 enhances the torque transfer capability of the tube yoke. The yoke is usually made of aluminum alloy or metal material. It is also used to connect the drive shaft to the yoke. Various designs are possible.
The QU40866 tube yoke is used with an external snap ring type universal joint. It has a cup diameter of 1-3/16″ and an overall width of 4½”. U-bolt kits are another option. It has threaded legs and locks to help secure the yoke to the drive shaft. Some performance cars and off-road vehicles use U-bolts. Yokes must be machined to accept U-bolts, and U-bolt kits are often the preferred accessory.
The end yoke is the mechanical part that connects the drive shaft to the stub shaft. These yokes are usually designed for specific drivetrain components and can be customized to your needs. Pat’s drivetrain offers OEM replacement and custom flanged yokes.
If your tractor uses PTO components, the cross and bearing kit is the perfect tool to make the connection. Additionally, cross and bearing kits help you match the correct yoke to the shaft. When choosing a yoke, be sure to measure the outside diameter of the U-joint cap and the inside diameter of the yoke ears. After taking the measurements, consult the cross and bearing identification drawings to make sure they match.
While tube yokes are usually easy to replace, the best results come from a qualified machine shop. Dedicated driveshaft specialists can assemble and balance finished driveshafts. If you are unsure of a particular aspect, please refer to the TM3000 Driveshaft and Cardan Joint Service Manual for more information. You can also consult an excerpt from the TSB3510 manual for information on angle, vibration and runout.
The sliding fork is another important part of the drive shaft. It can bend over rough terrain, allowing the U-joint to keep spinning in tougher conditions. If the slip yoke fails, you will not be able to drive and will clang. You need to replace it as soon as possible to avoid any dangerous driving conditions. So if you notice any dings, be sure to check the yoke.
If you detect any vibrations, the drivetrain may need adjustment. It’s a simple process. First, rotate the driveshaft until you find the correct alignment between the tube yoke and the sliding yoke of the rear differential. If there is no noticeable vibration, you can wait for a while to resolve the problem. Keep in mind that it may be convenient to postpone repairs temporarily, but it may cause bigger problems later.
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end yoke

If your driveshaft requires a new end yoke, CZPT has several drivetrain options. Our automotive end yoke inventory includes keyed and non-keyed options. If you need tapered or straight holes, we can also make them for you.
A U-bolt is an industrial fastener that has U-shaped threads on its legs. They are often used to join 2 heads back to back. These are convenient options to help keep drivetrain components in place when driving over rough terrain, and are generally compatible with a variety of models. U-bolts require a specially machined yoke to accept them, so be sure to order the correct size.
The sliding fork helps transfer power from the transfer case to the driveshaft. They slide in and out of the transfer case, allowing the u-joint to rotate. Sliding yokes or “slips” can be purchased separately. Whether you need a new 1 or just a few components to upgrade your driveshaft, 4 CZPT Parts will have the parts you need to repair your vehicle.
The end yoke is a necessary part of the drive shaft. It connects the drive train and the mating flange. They are also used in auxiliary power equipment. CZPT’s drivetrains are stocked with a variety of flanged yokes for OEM applications and custom builds. You can also find flanged yokes for constant velocity joints in our extensive inventory. If you don’t want to modify your existing drivetrain, we can even make a custom yoke for you.

China wholesaler 2017 Full Suspension MID Drive CZPT Motor 350W Fat Tire Mountain Electric Bike with Hot sellingChina wholesaler 2017 Full Suspension MID Drive CZPT Motor 350W Fat Tire Mountain Electric Bike with Hot selling