Suzhou Wanjia Electric Co., Ltd.

S20 Series

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  • Introduction
  • Parameter

Product Details

※ ≥ 80% motor efficiency performance & wide interval

※  60 N.m max torque continuous output

※  Integrated torque sensor and speed sensor

※  Lora-technology based wireless torque sensor

※  Over 20,000 extensive testing kilometers under real live road conditions


SeriesS20 Series
Model No.


S20-L250S  S20-L250E

Usage RecommendationCity/Trekking/Road
Pedal SensorCadence and Torque Integrated
Max torque60N.m
Maximum support Cadence(Rpm)120
Max support up to45km/h
Decoupling Mechnical Resistance-
Coaster Brake-
Size229mm × 92mm × 85mm
Weight approx2.9Kg
Efficienct (%)≥ 80
Hall Sensor/ EncoderEncoder Optional
Shaft StandardISIS
Light Drive Capacity(DCV)6V/3W
Gear Ratio44.7
Operating Temperature-20 ~ 45 ℃
IP LevelIPX5 
CertificationROHS/CE EN15194

The optimal drive unit for different applications