Tag Archives: motor 500w

China high quality CZPT 8fun BBS02 48V 500W MID Drive Motor Conversion Kits with Great quality

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. 

 

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  

Motor Specs:

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

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 :

Should you have any questions, please contact with me!


 

Types of Screw Shafts

Screw shafts come in various types and sizes. These types include fully threaded, Lead, and Acme screws. Let’s explore these types in more detail. What type of screw shaft do you need? Which 1 is the best choice for your project? Here are some tips to choose the right screw:

Machined screw shaft

The screw shaft is a basic piece of machinery, but it can be further customized depending on the needs of the customer. Its features include high-precision threads and ridges. Machined screw shafts are generally manufactured using high-precision CNC machines or lathes. The types of screw shafts available vary in shape, size, and material. Different materials are suitable for different applications. This article will provide you with some examples of different types of screw shafts.
Ball screws are used for a variety of applications, including mounting machines, liquid crystal devices, measuring devices, and food and medical equipment. Various shapes are available, including miniature ball screws and nut brackets. They are also available without keyway. These components form a high-accuracy feed mechanism. Machined screw shafts are also available with various types of threaded ends for ease of assembly. The screw shaft is an integral part of linear motion systems.
When you need a machined screw shaft, you need to know the size of the threads. For smaller machine screws, you will need a mating part. For smaller screw sizes, the numbers will be denominated as industry Numeric Sizes. These denominations are not metric, but rather in mm, and they may not have a threads-per-inch designation. Similarly, larger machine screws will usually have threads that have a higher pitch than those with a lower pitch.
Another important feature of machine screws is that they have a thread on the entire shaft, unlike their normal counterparts. These machine screws have finer threads and are intended to be screwed into existing tapped holes using a nut. This means that these screws are generally stronger than other fasteners. They are usually used to hold together electronic components, industrial equipment, and engines. In addition to this, machine screws are usually made of a variety of materials.
screwshaft

Acme screw

An Acme screw is the most common type of threaded shaft available. It is available in a variety of materials including stainless steel and carbon steel. In many applications, it is used for large plates in crushing processes. ACME screws are self-locking and are ideal for applications requiring high clamping force and low friction. They also feature a variety of standard thread forms, including knurling and rolled worms.
Acme screws are available in a wide range of sizes, from 1/8″ to 6″. The diameter is measured from the outside of the screw to the bottom of the thread. The pitch is equal to the lead in a single start screw. The lead is equal to the pitch plus the number of starts. A screw of either type has a standard pitch and a lead. Acme screws are manufactured to be accurate and durable. They are also widely available in a wide range of materials and can be customized to fit your needs.
Another type of Acme screw is the ball screw. These have no back drive and are widely used in many applications. Aside from being lightweight, they are also able to move at faster speeds. A ball screw is similar to an Acme screw, but has a different shape. A ball screw is usually longer than an Acme screw. The ball screw is used for applications that require high linear speeds. An Acme screw is a common choice for many industries.
There are many factors that affect the speed and resolution of linear motion systems. For example, the nut position and the distance the screw travels can all affect the resolution. The total length of travel, the speed, and the duty cycle are all important. The lead size will affect the maximum linear speed and force output. If the screw is long, the greater the lead size, the higher the resolution. If the lead length is short, this may not be the most efficient option.
screwshaft

Lead screw

A lead screw is a threaded mechanical device. A lead screw consists of a cylindrical shaft, which includes a shallow thread portion and a tightly wound spring wire. This spring wire forms smooth, hard-spaced thread convolutions and provides wear-resistant engagement with the nut member. The wire’s leading and trailing ends are anchored to the shaft by means appropriate to the shaft’s composition. The screw is preferably made of stainless steel.
When selecting a lead screw, 1 should first determine its critical speed. The critical speed is the maximum rotations per minute based on the natural frequency of the screw. Excessive backlash will damage the lead screw. The maximum number of revolutions per minute depends on the screw’s minor diameter, length, assembly alignment, and end fixity. Ideally, the critical speed is 80% of its evaluated critical speed. A critical speed is not exceeded because excessive backlash would damage the lead screw and may be detrimental to the screw’s performance.
The PV curve defines the safe operating limits of a lead screw. This relationship describes the inverse relationship between contact surface pressure and sliding velocity. As the PV value increases, a lower rotation speed is required for heavier axial loads. Moreover, PV is affected by material and lubrication conditions. Besides, end fixity, which refers to the way the lead screw is supported, also affects its critical speed. Fixed-fixed and free end fixity are both possible.
Lead screws are widely used in industries and everyday appliances. In fact, they are used in robotics, lifting equipment, and industrial machinery. High-precision lead screws are widely used in the fields of engraving, fluid handling, data storage, and rapid prototyping. Moreover, they are also used in 3D printing and rapid prototyping. Lastly, lead screws are used in a wide range of applications, from measuring to assembly.

Fully threaded screw

A fully threaded screw shaft can be found in many applications. Threading is an important feature of screw systems and components. Screws with threaded shafts are often used to fix pieces of machinery together. Having fully threaded screw shafts ensures that screws can be installed without removing the nut or shaft. There are 2 major types of screw threads: coarse and fine. When it comes to coarse threads, UTS is the most common type, followed by BSP.
In the 1840s, a British engineer named Joseph Whitworth created a design that was widely used for screw threads. This design later became the British Standard Whitworth. This standard was used for screw threads in the United States during the 1840s and 1860s. But as screw threads evolved and international standards were established, this system remained largely unaltered. A new design proposed in 1864 by William Sellers improved upon Whitworth’s screw threads and simplified the pitch and surface finish.
Another reason for using fully threaded screws is their ability to reduce heat. When screw shafts are partially threaded, the bone grows up to the screw shaft and causes the cavity to be too narrow to remove it. Consequently, the screw is not capable of backing out. Therefore, fully threaded screws are the preferred choice for inter-fragmentary compression in children’s fractures. However, surgeons should know the potential complication when removing metalwork.
The full thread depth of a fully threaded screw is the distance at which a male thread can freely thread into the shaft. This dimension is typically 1 millimeter shy of the total depth of the drilled hole. This provides space for tap lead and chips. The full-thread depth also makes fully threaded screws ideal for axially-loaded connections. It is also suitable for retrofitting applications. For example, fully threaded screws are commonly used to connect 2 elements.
screwshaft

Ball screw

The basic static load rating of a ball screw is determined by the product of the maximum axial static load and the safety factor “s0”. This factor is determined by past experience in similar applications and should be selected according to the design requirements of the application. The basic static load rating is a good guideline for selecting a ball screw. There are several advantages to using a ball screw for a particular application. The following are some of the most common factors to consider when selecting a ball screw.
The critical speed limit of a ball screw is dependent on several factors. First of all, the critical speed depends on the mass, length and diameter of the shaft. Second, the deflection of the shaft and the type of end bearings determine the critical speed. Finally, the unsupported length is determined by the distance between the ball nut and end screw, which is also the distance between bearings. Generally, a ball screw with a diameter greater than 1.2 mm has a critical speed limit of 200 rpm.
The first step in manufacturing a high-quality ball screw is the choice of the right steel. While the steel used for manufacturing a ball screw has many advantages, its inherent quality is often compromised by microscopic inclusions. These microscopic inclusions may eventually lead to crack propagation, surface fatigue, and other problems. Fortunately, the technology used in steel production has advanced, making it possible to reduce the inclusion size to a minimum. However, higher-quality steels can be expensive. The best material for a ball screw is vacuum-degassed pure alloy steel.
The lead of a ball screw shaft is also an important factor to consider. The lead is the linear distance between the ball and the screw shaft. The lead can increase the amount of space between the balls and the screws. In turn, the lead increases the speed of a screw. If the lead of a ball screw is increased, it may increase its accuracy. If not, the lead of a ball screw can be improved through preloading, lubrication, and better mounting accuracy.

China high quality CZPT 8fun BBS02 48V 500W MID Drive Motor Conversion Kits with Great qualityChina high quality CZPT 8fun BBS02 48V 500W MID Drive Motor Conversion Kits with Great quality

China high quality Magicwheel 24V 500W Brushless Motor Wheelchair Drive Motors Electric Wheelchair Motor Kit with Free Design Custom

Product Description

MagicWheel Specification
Battery Specification Performance Specification Dimensional Specification
Battery 18650 Lithium-ion Max. Speed 6km/h (5 speeds) Size 900*860*560 mm
Charging Battery or 
Direct Charging		 Motor Brushless Permanent 
Magnet Motor		 Max Weight 
Capacity		 150 kg
Charging Time 2.5 hours Controller Infinitics in-house  Total weight 62 kg (package)
Endurance 16 km Motor Power 250W*2 Capacity 1 Adult
Battery Weight 3 kg Brake Electromagnetic Rear Light LED
Environment
Temperature		 -15°~40° Braking 
distance		 0.6 meters/ dry condition
0.7 meters/wet condition		 Transportation
Packagings		 890*590*490
690*590*560
Battery Size 115*150*250 mm Torque 2.1 N.m Total Volume 0.44 cbm
Cell Automobile grade 
power cell		 Wading 
Depth		 50 mm Material Anodic Aluminum 
Oxide (AAO)
Battery capacity 10AH 24V Damping  Front Damper Front wheels omnidirectional

MagicWheel (previous known as Autour), 4 wheels electric and intelligent wheelchair with omnidirectional front wheels from originated Manufacturer, brings independence, fun, luxury and first-class experience to its users with ergonomic and aesthetics mindset.

Designed for both outdoor adventures and indoor companion, MagicWheel is a hybrid of electric wheelchair and mobility scooter.

Excellent operation experience comes from
Brush-less Permanent Magnet Motor Durable and powerful; 100,000 hours lifespan
Intelligent Central Controller Infinitics in-house designed Cloud ECU with OTA
Outstanding and Secure Li-ion Battery 10 Ah 24V Tesla’s 18650 Lithium-ion Cells

MagicWheel is designed for Simply Moving.

  1. Simply moving by just 1 joystick and immediately stop by releasing the joystick without slipping
  2. Long endurance of 16 km and the fastest speed of 6 km/h, calm and quiet
  3. More practical than folding electric wheelchair, MagicWheel can be easily disassembled in to 3 pieces in 15 seconds
  4. The heaviest piece is 19kg. No pressure at all to carry and store in the car trunk
  5. Friendly for new users with great fun

    MagicWheel is designed for All Terrain.

    1. Performance of MagicWheel is distinguished from other electric wheelchair or scooter in terms of coping with complex road conditions
    2. Superb accessibility and driving CZPT of MagicWheel demonstrated by the proven travel records to parks by metro and international travel by airplane and cruise
    3. Barrier free to go by car, bus, metro/subway, train or plane
    4. Unique and innovative omnidirectional wheels gives the best turning radium to go through narrow space

    Highlights of MagicWheel’s omnidirection front wheels
    The composition of each front wheel 24 small wheels
    Vertical Obstacle Clearance 6 cm
    Easily Turning in small spaces 76 cm the best in the market
    Climbing performance 10 °
    Horizontal Obstacle Clearance 15 cm

    MagicWheel is designed for Safety.

    1. Anti-slipping
    2. Anti-turnover
    3. LED warning light
    4. Seat-belt
    5. Rigorous product testings passed
    6. Battery MSDS report

    MagicWheel is designed for Comfy.

    1. The backrest and armrest can be adjusted by users’ needs
    2. Flip-up armrest for easy access from both sides
    3. Selected T-sens sitting cushion is waterproof, anti-slip, anti-bedsore, breathable and fire retardant
    4. Proven records of the CZPT of the body pressure dispersion than the normal cushions

    MagicWheel is designed for Poshness.

    1. Go outside with great confidence
    2. Three colors available Bentley White, Porsche Gray and Ferrari Red

    Q&A
    Q: Can the seat height be adjusted automatically?
    A: It can be adjusted manually. Usually the wheelchair is a personal item. After the angle and height are adjusted to the most comfortable status, there is no need for repeated adjustments.

    Q: What material is your product made of? Is it safe enough?
    A: The frame material is aviation aluminum and stamped sheet, and the shell is injection molded of ABS+PC engineering plastics. The load-bearing capacity of the whole vehicle is 150 kg. This weight can ensure that the scooter is unimpeded on the standard road surface prescribed by each country, and there will be no problems with other scooters such as slipping and rollover.

    Q: Why doesn’t your scooter have 2 pedals?
    A: In order to allow users to get enough movement area for their feet while sitting, without being restricted, we use a whole pedal. This pedal is very strong and can withstand 100 kg.
    And our pedal can be lifted up, so that users can easily get on or get off.

    Q: Is there a remote controller?
    A: Yes, but that is an optional feature.

    Q: Quality problems and service life of batteries?
    A: The battery is a lithium battery, which uses CZPT batteries.
    The power loss of our battery cell is 20% after it is charged and discharged 1,000 times, which means it will have 80% of the remaining power after 3 years normally.
    If you feel that the battery is not enough, you can buy 1 battery more, which can be replaced at any time.

    Q: The service life of the scooter
    A: The electrical part (battery, motor, and controller) is guaranteed for 1 year, and the frame is 3 years.
    The wheels are maintenance-free. The theoretical operating distance of the front wheels is 30,000 to 50,000 kilometers, the rear wheels are solid tires, and the rubber tires are maintenance-free.
    The cushion can be replaced according to actual needs.
    The whole scooter can basically be used for 8-10 years.

    Q: Is your scooter fold-able?
    A: Our scooter can be disassembled into 3 parts in 15 seconds, the heaviest part is 19 kg, which is lighter than the fold-able wheelchairs on the market and is more convenient to carry.
    [Battery 2.6 kg, seat 14 kg, front frame 14 kg, rear frame 19 kg], it is very convenient to store, transport and travel. You may have seen other fold-able scooter, the weight is almost 30 kilograms, it is very heavy to move.

    Q: The weight of MagicWheel?
    A: MagicWheel designs for both outdoor adventure and indoor companion. The weight of MagicWheel is 50 kg, for the sake of user safety and the stability of the scooter itself.

    Q: What is the seat width of MagicWheel?
    A: The width of ordinary wheelchairs on the market is between 420-510mm, and ours is 460mm. Most people can use it. The width of the whole scooter is 560. Normal doors can pass through.

    Q: Can MagicWheel be equipped with front lights?
    A: Every users’ needs are different and diverse. Many of our users install small accessories on the scooter according to their favorite styles. It can be fitted with cup holders and bright flashlights.

    Q: Can the light strip on the back be turned off?
    A: The light strip at the back is a reminder to the pedestrians behind and a protection for us, especially at night or in a dark place. The power consumption is very small and can be ignored.
    You can disconnect it by loosening the connection point of the wire connecting the light strip under the seat but which is NOT recommended.

    Q: Does MagicWheel have emergency braking? What is the principle of braking?
    MagicWheel is different from general motor brakes. It uses electromagnetic brakes. Releasing the joystick, it stops immediately.

    About usage
    Q: Can MagicWheels travel on planes?
    A: Most airlines have rules that a single battery should not exceed 300Wh. The battery of MagicWheel is 240Wh. You need to remove the battery and bring it with you, and then the scooter body can be checked in before boarding. Please bear in mind that contact with the airline at least 48 hours in advance before the departure time.

    Q: Can MagicWheel enter parks and shopping malls?
    A: The speed of the MagicWheel scooter is only 6 km/h, which is about the same as the walking speed of pedestrians. It is also small in size and can enter shopping malls and parks.

    Q: What should I do if I run out of power when I go out on the road?
    A: There is a battery indicator on the armrest of our scooter. Observe the battery indicator before use. If you are going to have a long-distance trip, please charge it 1 day in advance.

    In case of power or scooter failure, please switch the 2 red wrenches at the bottom of rear frame to manual mode, therefore it can be pushed to move.

    Q: Can MagicWheel be replaced with left-handed operation?
    A: Yes, if you need to use the left-handed operation, you can make a note with the customer service when you buy it. It will be set up in the factory before delivering.

    Q: Can I use MagicWheel in the cold winter? What about the battery loss?
    A: The battery does lose some power due to the low temperature. Users must pay attention to the power indicator and plan their own itinerary.

    Q: Is your scooter easy to get started?
    A: Our car uses joystick control and electromagnetic brakes, which is very friendly and suitable for the elderly to learn.

    Q: Can I take the subway/metro with MagicWheel?
    A: Yes, absolutely, because of the unique design of the front wheels, coupled with the powerful dual-motor drive, MagicWheel can pass the gap and enter the carriage from the platform easily without help.

    Q: Can the battery be optional?
    A: MagicWheel currently sells 1 type of battery only. We will update batteries of different capacities in short future.

    Q: Can MagicWheel be put in the trunk of an ordinary car after disassembled? After putting it in the trunk, is it impossible to load other things?
    A: Yes. Large items may not fit, but small items can still fit a lot.

    What Are the Advantages of a Splined Shaft?

    If you are looking for the right splined shaft for your machine, you should know a few important things. First, what type of material should be used? Stainless steel is usually the most appropriate choice, because of its ability to offer low noise and fatigue failure. Secondly, it can be machined using a slotting or shaping machine. Lastly, it will ensure smooth motion. So, what are the advantages of a splined shaft?
    Stainless steel is the best material for splined shafts

    When choosing a splined shaft, you should consider its hardness, quality, and finish. Stainless steel has superior corrosion and wear resistance. Carbon steel is another good material for splined shafts. Carbon steel has a shallow carbon content (about 1.7%), which makes it more malleable and helps ensure smooth motion. But if you’re not willing to spend the money on stainless steel, consider other options.
    There are 2 main types of splines: parallel splines and crowned splines. Involute splines have parallel grooves and allow linear and rotary motion. Helical splines have involute teeth and are oriented at an angle. This type allows for many teeth on the shaft and minimizes the stress concentration in the stationary joint.
    Large evenly spaced splines are widely used in hydraulic systems, drivetrains, and machine tools. They are typically made from carbon steel (CR10) and stainless steel (AISI 304). This material is durable and meets the requirements of ISO 14-B, formerly DIN 5463-B. Splined shafts are typically made of stainless steel or C45 steel, though there are many other materials available.
    Stainless steel is the best material for a splined shaft. This metal is also incredibly affordable. In most cases, stainless steel is the best choice for these shafts because it offers the best corrosion resistance. There are many different types of splined shafts, and each 1 is suited for a particular application. There are also many different types of stainless steel, so choose stainless steel if you want the best quality.
    For those looking for high-quality splined shafts, CZPT Spline Shafts offer many benefits. They can reduce costs, improve positional accuracy, and reduce friction. With the CZPT TFE coating, splined shafts can reduce energy and heat buildup, and extend the life of your products. And, they’re easy to install – all you need to do is install them.
    splineshaft

    They provide low noise, low wear and fatigue failure

    The splines in a splined shaft are composed of 2 main parts: the spline root fillet and the spline relief. The spline root fillet is the most critical part, because fatigue failure starts there and propagates to the relief. The spline relief is more susceptible to fatigue failure because of its involute tooth shape, which offers a lower stress to the shaft and has a smaller area of contact.
    The fatigue life of splined shafts is determined by measuring the S-N curve. This is also known as the Wohler curve, and it is the relationship between stress amplitude and number of cycles. It depends on the material, geometry and way of loading. It can be obtained from a physical test on a uniform material specimen under a constant amplitude load. Approximations for low-alloy steel parts can be made using a lower-alloy steel material.
    Splined shafts provide low noise, minimal wear and fatigue failure. However, some mechanical transmission elements need to be removed from the shaft during assembly and manufacturing processes. The shafts must still be capable of relative axial movement for functional purposes. As such, good spline joints are essential to high-quality torque transmission, minimal backlash, and low noise. The major failure modes of spline shafts include fretting corrosion, tooth breakage, and fatigue failure.
    The outer disc carrier spline is susceptible to tensile stress and fatigue failure. High customer demands for low noise and low wear and fatigue failure makes splined shafts an excellent choice. A fractured spline gear coupling was received for analysis. It was installed near the top of a filter shaft and inserted into the gearbox motor. The service history was unknown. The fractured spline gear coupling had longitudinally cracked and arrested at the termination of the spline gear teeth. The spline gear teeth also exhibited wear and deformation.
    A new spline coupling method detects fault propagation in hollow cylindrical splined shafts. A spline coupling is fabricated using an AE method with the spline section unrolled into a metal plate of the same thickness as the cylinder wall. In addition, the spline coupling is misaligned, which puts significant concentration on the spline teeth. This further accelerates the rate of fretting fatigue and wear.
    A spline joint should be lubricated after 25 hours of operation. Frequent lubrication can increase maintenance costs and cause downtime. Moreover, the lubricant may retain abrasive particles at the interfaces. In some cases, lubricants can even cause misalignment, leading to premature failure. So, the lubrication of a spline coupling is vital in ensuring proper functioning of the shaft.
    The design of a spline coupling can be optimized to enhance its wear resistance and reliability. Surface treatments, loads, and rotation affect the friction properties of a spline coupling. In addition, a finite element method was developed to predict wear of a floating spline coupling. This method is feasible and provides a reliable basis for predicting the wear and fatigue life of a spline coupling.
    splineshaft

    They can be machined using a slotting or shaping machine

    Machines can be used to shape splined shafts in a variety of industries. They are useful in many applications, including gearboxes, braking systems, and axles. A slotted shaft can be manipulated in several ways, including hobbling, broaching, and slotting. In addition to shaping, splines are also useful in reducing bar diameter.
    When using a slotting or shaping machine, the workpiece is held against a pedestal that has a uniform thickness. The machine is equipped with a stand column and limiting column (Figure 1), each positioned perpendicular to the upper surface of the pedestal. The limiting column axis is located on the same line as the stand column. During the slotting or shaping process, the tool is fed in and out until the desired space is achieved.
    One process involves cutting splines into a shaft. Straddle milling, spline shaping, and spline cutting are 2 common processes used to create splined shafts. Straddle milling involves a fixed indexing fixture that holds the shaft steady, while rotating milling cutters cut the groove in the length of the shaft. Several passes are required to ensure uniformity throughout the spline.
    Splines are a type of gear. The ridges or teeth on the drive shaft mesh with grooves in the mating piece. A splined shaft allows the transmission of torque to a mate piece while maximizing the power transfer. Splines are used in heavy vehicles, construction, agriculture, and massive earthmoving machinery. Splines are used in virtually every type of rotary motion, from axles to transmission systems. They also offer better fatigue life and reliability.
    Slotting or shaping machines can also be used to shape splined shafts. Slotting machines are often used to machine splined shafts, because it is easier to make them with these machines. Using a slotting or shaping machine can result in splined shafts of different sizes. It is important to follow a set of spline standards to ensure your parts are manufactured to the highest standards.
    A milling machine is another option for producing splined shafts. A spline shaft can be set up between 2 centers in an indexing fixture. Two side milling cutters are mounted on an arbor and a spacer and shims are inserted between them. The arbor and cutters are then mounted to a milling machine spindle. To make sure the cutters center themselves over the splined shaft, an adjustment must be made to the spindle of the machine.
    The machining process is very different for internal and external splines. External splines can be broached, shaped, milled, or hobbed, while internal splines cannot. These machines use hard alloy, but they are not as good for internal splines. A machine with a slotting mechanism is necessary for these operations.

    China high quality Magicwheel 24V 500W Brushless Motor Wheelchair Drive Motors Electric Wheelchair Motor Kit with Free Design CustomChina high quality Magicwheel 24V 500W Brushless Motor Wheelchair Drive Motors Electric Wheelchair Motor Kit with Free Design Custom

    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.
    air-compressor

    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 Best Sales CZPT 8fun BBS02 48V 500W MID Drive Motor Conversion Kits near me shop

    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. 

     

    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  

    Motor Specs:

    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

    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 :

    Should you have any questions, please contact with me!


     

    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 Sales CZPT 8fun BBS02 48V 500W MID Drive Motor Conversion Kits near me shop China Best Sales CZPT 8fun BBS02 48V 500W MID Drive Motor Conversion Kits near me shop