QS Motor QSD138B-70
QS138 70H V2 Mid Drive Motor — 3000W rated IPM PMSM inrunner, revised housing design over V1 (QSD138A-70). Belt driven or sprocket design with spline shaft output. 138mm stator diameter, 70mm stack height, 5 pole pairs. Air cooled, IP67 waterproof. Supports regenerative braking.
In brief: 6000W mid-drive motor. 48–72V rated. From $254.
Specs verified May 29, 2026
Where to Find
Prices tracked across 2 sellersAliExpress - SiAECOSYS Electric Powertrain Store
$253.78 + $227.43 shipping
QS Motor
Request a quote* Shipping estimates are for the contiguous US and may vary by location.
* This page contains affiliate links. WattWorks may earn a commission at no extra cost to you. Learn more
Price History
Current best price $253.78. Over the past 90 days: low $230.97, high $270.14, average $247.08 — up 3% vs average.
- AliExpress - SiAECOSYS Electric Powertrain Store
| Date | Price | Shipping | Total | Change | Coupon | Rating | Sales | In Stock | Status |
|---|---|---|---|---|---|---|---|---|---|
AliExpress - SiAECOSYS Electric Powertrain Store(12 records) | |||||||||
| May 29, 202610:33 AM | $253.78 | $227.43 | $481.21 | $0.16 | — | — | — | Yes | active |
| May 28, 202609:01 AM | $253.94 | $227.43 | $481.37 | $0.17 | — | — | — | Yes | active |
| May 27, 202610:20 AM | $253.77 | $227.43 | $481.20 | $0.00 | — | — | — | Yes | active |
| May 25, 202601:55 PM | $253.77 | $227.43 | $481.20 | $16.19 | — | — | — | Yes | active |
| May 22, 202609:01 AM | $269.96 | $227.43 | $497.39 | $0.18 | USSS05−$5.00 | — | — | Yes | active |
| May 21, 202609:07 AM | $270.14 | $227.43 | $497.57 | $0.00 | USSS35−$35.00 | — | — | Yes | active |
| May 19, 202609:09 AM | $270.14 | $227.43 | $497.57 | $0.73 | USSS35−$35.00 | — | — | Yes | active |
| May 18, 202609:08 AM | $269.41 | $227.43 | $496.84 | $16.15 | USSS12−$12.00 | — | — | Yes | active |
| May 15, 202609:01 AM | $253.26 | $227.43 | $480.69 | $7.05 | SRUS02−$2.00 | — | — | Yes | active |
| May 14, 202609:07 AM | $246.21 | $227.43 | $473.64 | $0.16 | SRUS04−$4.00 | — | — | Yes | active |
| May 12, 202609:07 AM | $246.05 | $227.43 | $473.48 | $15.08 | SRUS25−$25.00 | — | — | Yes | active |
| Apr 29, 202605:12 AM | $230.97 | $227.43 | $458.40 | Initial | — | — | — | Yes | active |
Reviews
No reviews yet — be the first to share your experience.
Sign in with Google to leave a review.
Specifications
Motor Design
- Design
- Inrunner PMSM
- Stator Diameter
- 138mm
- Stator Height
- 70mm
- Pole Pairs
- 5
- Shaft Type
- Spline
- Cooling
- Air
Performance
- Wattage
- 6000W
- Peak Wattage
- 10000W
- Rated Voltage
- 48–72V
- Rated RPM
- 3800
- Max Torque
- 55.00Nm
Electrical
- Continuous DC Amps
- 67A
- Peak DC Amps
- 140A
- Flux Weakening RPM
- 6000RPM
Features
- PAS Sensor Type
- None
- Temp Sensor
- KTY83
- Has Encoder
- No
Physical
- Weight
- 11.5 kg
- Dimensions (L×W×H)
- 210mm × 162mm × 162mm
- IP Rating
- IP66
Ports & Connectors
| Pin | Wire color | Function |
|---|---|---|
| 1 | Yellow | Phase A |
| 2 | Green | Phase B |
| 3 | Blue | Phase C |
| 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 |
