QS90 72V IPM PMSM Mid Drive Motor


This motor is perfect for small electric motorcyles. This is the most compact version of the infamous 138 70h model. If you have a kids bike or a pocket rocket the qs90 might be right up your alley. With a small Diamater of only 4 inches, You can fit this motor in almost anything! Although this motor is tiny it is no slouch! This motor is capable of over 7kW Bursts! 



1pc X QS 90 1kW Mid drive motor  (tapered shaft with key) with 14t 428 sprocket


Key Features 

  • Light weight and small dimension compared to other motors of similar power outputs
  • High Torque suitable for high performace high load situations such as climbing and racing
  • Supports regenerative braking
  • Proven reliability

QS90 (1000W)

SKU: QS90428
  • Motor Type: BLDC Permanent Magnet Inner Rotor Motor With Hall Sensor

    Brand: QS Motor, QSMOTOR

    Motor Design: Single Axle 

    Matched Wheel: 10inch Wheel (as default)

    Magnet Height: 80mm, 5 pole pairs

    Diameter of stator: 120mm

    Rated Power: 1000W

    Rated Voltage: 60V or 72V (as default)

    Speed: 60V@45KPH; 72V@55KPH

    Max Torque: approx 25.2N.m without Reduction ratio, approx 134.0N.m with 1:5.3 Reduction ratio  

    Max Efficiency: 90.5%

    Thermal Probe: None as default (KTY83/122 is available, please let sales know if needed).

    Hall Sensor: Single Hall Plate with waterproof connectors

    Phase Wire: 6mm² Cross Section (not include insulation layer)

    Hall Sensor Phasing angle: 120 degree

    Waterproof Grade: IP54

    Color: Black 

    N.W./G.W.: 7.8kgs/9.1kgs   

    Package Dimension: 34cmx34cmx33cm