QSJ138D-90 V3 4000W-50H-PMSM : Gearbox

Description

Air cooled PMSM mid-drive motor with internal gearbox suitable for light and medium off-road dirt bikes and motorcycles, by QS Motor.

Type: PMSM (Inner Rotor)
Operation: Hall Sensor
Internal Gear Ratio: 1 : 2.35

Rated Operating Voltage: 72V
Recommended Voltage Range: 64V – 84V
Lowest Recommended Operating Voltage: 48V
Highest Recommended Operating Voltage: 110V

Rated Nominal Power: 4000W
Recommended Nominal Current: 55A Continuous
Rated Peak Power: 13500W
Recommended Peak Current: 187.5A Burst

Rated Speed: 4800 RPM
Peak Speed: 7000 RPM
Rated Torque: 32.0 Nm
Peak Torque: 120.0 Nm

Core Diameter: 138mm
Magnet Height: 90mm
Pole Pairs: 5
Winding Configuration: Y
Thermic Probe: KTY83/122

Operating Temperature: 70°C – 120°C (Peak 150°C)
Waterproof Grade: IP67
Phase Wire: 20mm² (excluding insulation)

Weight: 14.5 kg
Colour: Black
Cooling: Surface Air Cooling

Phase Cable Length: 640 +/- 20mm
Signal Cable Length: 660 +/- 20mm
Phase Connector: M6 Lug Terminal

Wiring Definition:
U/A Phase: Yellow
V/B Phase: Green
W/C Phase: Blue

Signal Connector Type: DJ701Y-2.3-11

Signal Connector Pinout:

Shaft:

Delivered with standard shaft suitable for sprockets (typically spline shaft design). Alternative tapered design for pulleys available by enquiry.

Transmission: As standard delivered without pulley or sprocket : available upon request
Connection: Phase + Signal cable length and connectors can be modified upon request
Warranty: 2 Years

Regarding B2B orders, customisation of product or questions please contact us directly via [email protected]

QSJ138D-90 V3 4000W-50H-PMSM : Gearbox