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Brand Name : Suring max
Model Number : SRMID250
Certification : CE, EN15194. Rohs
Place of Origin : CHINA
MOQ : 1
Price : USD 230-255
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram,PAYPAL
Supply Ability : 7000 sets/year
Delivery Time : 5-15 work days
Packaging Details : Each motor in one 5 layer carton with quality Foam protected
Part : Torque sensor middle motor kit
Controller : 20A(max) integrated inside motor
Voltage : 36V for electric bicycle conversion kit
Power : 250W
Battery : Lithium battery
Weight : 5kg
Wheel size : 16" -28" 700c
Bottom bracket size : 68mm
PAS sensor : Torque sensor
Package : Each motor in one box with foam peotection

Quick information for this motor:
| Voltage: | 36V/48V | Power: | 250W/350W | 
| Wheel size: | 20-29'' | Weight: | 4.2kg | 
| Max torque: | 80Nm | Chain wheel: | 38T/42T/52T | 
| Max speed: | 30km/h | PAS sensor: | Torque sensor inside | 
| 
 Controller inside 
 | |||
You should make sure the size of your Bottom bracket is 68mm:
Usually most of the regular bike's size is 68mm.

What is torque sensor and what is the strength?
Torque sensor means the motor works as long as there is strength on the pedal.
The speed sensor means the motor will work only when the pedal move.
Which makes a big difference on hilling, when you face a high mounting, you can even not make the pedal move, so the speed sensor wont work , but if you are with the torque sensor, the motor will runs without any problem.
In one word, this torque sensor system is very good at hilling/mounting.
Wiring diagram:



We will pack motor kit in one carton with very good protection:

The shipping cost for one sample is about 60-100$ according to your locataion.
 We can give sample cost refund when you order in batch after the sample testing.
 20inch container can contain about 1000 kits 
 40inch container can contain about 2000 kits
 Will be more quantity if you dont need the rims and spokes assembled.
For samples we can only delivery by express like DHL,UPS,FEDEX and so on.
(battery delivery in separate pack)
Warranty:
 Motor---3 years
 Battery--2 years
 The others--1 year
 You only need to send us the video or pic to show the problem and the series number ,we will ship the new one or the repair
 parts together with the next shippment. Also will be post by air if need urgent!
 Accordning to your experience , the defective pecentage is only about 1‰.

OEM&ODM:
 You are welcome to send OEM and ODM request to make your products competitive !
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