China factory CZPT mm340.250 BBS01b MID Drive Motor 36V 250W Electric Bike Conversion Kit with Battery wholesaler

Solution Description

36V 250W CZPT Mid Drive Motor

With an built-in velocity sensor, this mid-push motor, which is suitable with common bikes, has a rated energy of 250W, a reduction ratio of 1: 21.9 and a highest torque of eighty N.m, providing perfect energy for vehicles. Light but powerful and effective, this motor tremendously boosts riding comfort and is suitable for touring bikes and commuter bikes.


  • Update:Upgraded IRFB3077 mosfets controller.

  • Four riding modes:Pure electrical method & human using product & energy guidance & drive model. 4 working modes can be switched at will.

  • Simple Installation:Can be effectively mounted into an electric powered bicycle in just a handful of time by only a handful of resources which can get rid of the crankset and the middle shaft, as properly as resources for putting in this mid-travel motor.

  • Universal Compatible:It’s compatiable with mountain bicycle,road bike, racing bicycle ect bikes with sixty eight-73mm bottom bracket


Motor Specification:

Motor Model: BBS01B

Bafang Design: MM G340.250



Controller Present: 15A

No Load Speed(RPM) :83-87

Load Speed(RPM):78-83

MAX Torque:80 N.m

Efficiency: > eighty%

PAS SENSOR : Velocity Sensor

Reduction Ratio: 1 : 21.nine

Centification:CE/EN 14764/ROHS

Water-resistant Grade:IP65

Motor Fat: 3.98kg

Bracket base duration:68mm

Procedure Temperature:-twenty-45ºC

Water-proof Grade: IP65

Screen Doing work Temperature: -twenty-80C

36V seventeen.5Ah Specification:

Nomal Volt:36V
Rated Capacity:seventeen.5Ah
Battery Cell:Built in CZPT 29E 2900mah.60PCS
Array method:10s6p
Battery dimensions:367.2*ninety.1*111mm
Battery Weight:4.1KG
Max Constant Discharge Current:30A
Peak present:60A
Demand voltage:42V
Discharge lower off voltage:28V
Way of Demand:CC/CV
Cycle Life:one thousand tims
Demand Temperature:-fifteen-65ºC
Discharge Temperature:-15-65ºC
Protection Purpose:More than charge, Above discharge,Above existing, Quick circuit,  Stability





Q: How do I know if this mid drive motor matches for my bike?

A: This mid drive motor suits for the bike with 68mm (2.68inch) – 73mm (2.87inch) vast base bracket. The inner diamater of the bracket ought to be not less than 33.5mm. We’ll send additional set up accessoreis for 73mm bottom bracket.


Q: How do I validate whether or not I want the brake levers or the brake sensors?

A: If your brakes are hydraulic or you want to use your very own brake sensors, you can select brake sensors. They can join with your brakes to work right.


Q: Can I put in the motor as before long as I acquire it?

A: Before installing the motor, you should adhere to the steps in the manual to hook up the motor to see if the motor can perform typically. If there is a dilemma, make sure you make contact with us initial, we will offer technical help, will not worry.



Packaging included:

1 * 36V 250W Mid Drive Motor

1 Pair * Brake Lever or Brake Sensor

1 Pair * Crank

1 Pair * Chainwheel(44T/46T/48T/52T option, make sure you kindly go away us message if you want to change chainwheel)

1 Established * Thumb Throttle

one Established * Velocity Sensor

one * Screen ( 750C bluetooth, DPC18, KD986, 860C, P850C, 850C, 750C, SW102, 500C, C965, C961 alternative)

one * 4 in 1 Cable

1 * Equipment

one * 36V 17.5Ah battery created in CZPT cells

one * Battery charger (US/EU/AU/Uk Option)


Heat Suggestions:

one, Owing to the particularity of the battery, some motors and batteries are not in the identical warehouse, so you may get more than 1 package. If there are not all goods in the package deal you obtained, remember to do not open dispute or negative evaluations very first, remember to make contact with us for confirmation.

two. When utilizing the motor package, please make sure that the battery crucial is locked, or else the discharge port is very easily burned out.

How to notify if your driveshaft wants replacing

What is the cause of the unbalanced generate shaft? Unstable U-joint? Your automobile could make clicking noises whilst driving. If you can hear it from each sides, it may possibly be time to hand it over to the mechanic. If you happen to be not confident, read on to find out much more. Fortunately, there are a lot of methods to inform if your driveshaft demands changing.


An unbalanced driveshaft can be the source of peculiar noises and vibrations in your automobile. To fix this issue, you ought to get in touch with a professional. You can try out a variety of things to correct it, which includes welding and modifying the bodyweight. The following are the most widespread strategies. In addition to the approaches earlier mentioned, you can use standardized weights to harmony the driveshaft. These standardized weights are attached to the shaft by welders.
An unbalanced push shaft typically generates lateral vibrations for every revolution. This sort of vibration is usually caused by a ruined shaft, missing counterweights, or a international item caught on the travel shaft. On the other hand, torsional vibrations arise 2 times for each revolution, and they are triggered by shaft phase shifts. Finally, vital velocity vibration happens when the RPM of the generate shaft exceeds its rated potential. If you suspect a driveshaft issue, verify the adhering to:
Manually changing the imbalance of a generate shaft is not the easiest task. To stay away from the problems of manual balancing, you can select to use standardized weights. These weights are fastened on the outer circumference of the generate shaft. The operator can manually situation the weight on the shaft with particular resources, or use a robot. Nevertheless, guide balancers have numerous drawbacks.


When the angular velocity of the output shaft is not constant, it is unstable. The angular velocity of the output shaft is .004 at ph = 29.5 and 1.9 at t = 1.9. The angular velocity of the intermediate shaft is not a difficulty. But when it is unstable, the torque used to it is also much for the equipment. It may possibly be a excellent thought to check out the stress on the shaft.
An unstable generate shaft can lead to a lot of noise and mechanical vibration. It can direct to untimely shaft exhaustion failure. CZPT studies the result of shaft vibration on the rotor bearing system. They investigated the result of flex coupling misalignment on the vibration of the rotor bearing program. They assume that the vibrational reaction has two components: x and y. Even so, this strategy has constrained software in several conditions.
Experimental final results demonstrate that the existence of cracks in the output shaft could mask the unbalanced excitation attributes. For case in point, the presence of superharmonic peaks on the spectrum is attribute of cracks. The existence of cracks in the output shaft masks unbalanced excitation attributes that can not be detected in the transient reaction of the enter shaft. Determine 8 exhibits that the frequency of the rotor will increase at vital velocity and decreases as the shaft passes the natural frequency.


If you happen to be obtaining difficulty driving your vehicle, chances are you have operate into an unreliable driveshaft. This sort of drivetrain can lead to the wheels to adhere or not flip at all, and also restrict the all round handle of the automobile. What ever the reason, these troubles must be settled as soon as attainable. Right here are some indicators to appear for when diagnosing a driveshaft fault. Let us take a closer appear.
The very first symptom you might notice is an unreliable drive shaft. You might come to feel vibrations, or listen to noises under the car. Based on the trigger, it could be a broken joint or a damaged shaft. The excellent news is that driveshaft repairs are normally relatively economical and get less time than a comprehensive drivetrain replacement. If you’re not positive what to do, CZPT has a guidebook to replacing the U-connector.
One particular of the most common signs of an unreliable driveshaft is clanging and vibration. These appears can be triggered by worn bushings, free U-joints, or damaged middle bearings. This can trigger significant vibration and sounds. You can also come to feel these vibrations by way of the steering wheel or the ground. An unreliable driveshaft is a symptom of a bigger difficulty.

Unreliable U-joints

A auto with an unreliable U-joint on the push shaft can be dangerous. A bad u-joint can avoid the car from driving properly and may even result in you difficulties. Unreliable u-joints are inexpensive to exchange and you must attempt acquiring elements from good quality companies. Unreliable U-joints can result in the vehicle to vibrate in the chassis or equipment lever. This is a positive indication that your vehicle has been neglected in servicing.
Changing a U-joint is not a challenging task, but it requires unique equipment and a great deal of elbow grease. If you don’t have the correct tools, or you are unfamiliar with mechanical terminology, it truly is greatest to seek out the aid of a mechanic. A skilled mechanic will be in a position to precisely assess the dilemma and propose an proper resolution. But if you will not feel self-confident ample, you can substitute your very own U-connector by adhering to a handful of simple actions.
To make sure the vehicle’s driveshaft is not damaged, check the U-joint for dress in and lubrication. If the U-joint is worn, the metallic areas are likely to rub towards each and every other, creating dress in. The sooner a issue is diagnosed, the more quickly it can be solved. Also, the more time you wait, the much more you get rid of on repairs.

ruined generate shaft

The driveshaft is the part of the car that connects the wheels. If the driveshaft is destroyed, the wheels could stop turning and the vehicle may possibly gradual down or cease relocating fully. It bears the weight of the vehicle alone as well as the load on the road. So even a slight bend or split in the generate shaft can have dire repercussions. Even a piece of free metallic can become a lethal missile if dropped from a motor vehicle.
If you hear a screeching noise or growl from your motor vehicle when shifting gears, your driveshaft might be broken. When this takes place, damage to the u-joint and extreme slack in the generate shaft can end result. These conditions can even more injury the drivetrain, like the entrance half. You should change the driveshaft as quickly as you notice any signs and symptoms. After replacing the driveshaft, you can commence searching for indications of wear.
A knocking audio is a indicator of injury to the generate shaft. If you hear this sound although driving, it might be because of to worn couplings, damaged propshaft bearings, or destroyed U-joints. In some circumstances, the knocking sound can even be caused by a ruined U-joint. When this takes place, you may possibly need to replace the whole driveshaft, necessitating a new 1.

Maintenance expenses

The value of fixing a driveshaft differs widely, based on the kind and trigger of the problem. A new driveshaft fees in between $three hundred and $1,300, such as labor. Fixing a damaged driveshaft can expense everywhere from $200 to $300, dependent on the time essential and the type of areas required. Signs and symptoms of a destroyed driveshaft contain unresponsiveness, vibration, chassis sound and a stationary automobile.
The first thing to think about when estimating the price of fixing a driveshaft is the variety of automobile you have. Some autos have much more than one, and the areas utilised to make them may possibly not be compatible with other cars. Even if the identical car has two driveshafts, the damaged ones will cost more. Fortunately, a lot of car mend stores supply free estimates to fix damaged driveshafts, but be mindful that this sort of perform can be challenging and expensive.

China factory CZPT mm340.250 BBS01b MID Drive Motor 36V 250W Electric Bike Conversion Kit with Battery     wholesaler China factory CZPT mm340.250 BBS01b MID Drive Motor 36V 250W Electric Bike Conversion Kit with Battery     wholesaler