QS Motor QSD138C-50
QS138 50H Mid Drive Motor — 2000W rated IPM PMSM inrunner, the compact entry-level variant of the QS138 family. 138mm stator diameter, 50mm stack height. Belt driven or sprocket design. Air cooled, IP67 waterproof.
In brief: 2000W mid-drive motor. 48–72V rated.
Specs verified Jun 23, 2026
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Specifications
Motor Design
- Design
- Inrunner PMSM
- Stator Diameter
- 138mm
- Stator Height
- 50mm
- Pole Pairs
- 5
- Shaft Type
- Spline
- Cooling
- Air
Performance
- Wattage
- 2000W
- Peak Wattage
- 4100W
- Rated Voltage
- 48–72V
- Rated RPM
- 2800
- Max Torque
- 51.00Nm
Electrical
- Continuous DC Amps
- 30A
- Peak DC Amps
- 70A
- Flux Weakening RPM
- 3850RPM
Features
- PAS Sensor Type
- None
- Temp Sensor
- None
- Has Encoder
- No
Physical
- Weight
- 9 kg
- IP Rating
- IP66
Ports & Connectors
Phase Wires3 Ring Terminals
Motor Phase
| Pin | Wire color | Function |
|---|---|---|
| 1 | Yellow | Phase A |
| 2 | Green | Phase B |
| 3 | Blue | Phase C |
Hall Sensor
Hall Sensor
| Pin | Wire color | Function |
|---|---|---|
| 1 | Red | 5V Power |
| 2 | No color | None |
| 3 | Black | Ground |
| 4 | Green | Hall A |
| 5 | Yellow | Hall B |
| 6 | Blue | Hall C |
