QS Motor QSD120A-70
QS120 70H Mid Drive Motor — 2000W rated IPM PMSM inrunner. 120mm stator diameter, 70mm stack height, 5 pole pairs. 2800 RPM rated, 4400 RPM with flux weakening. Belt driven or sprocket design. Air cooled, IP67 waterproof. Bridges the gap between the compact QS090 and the popular QS138 family.
In brief: 2000W mid-drive motor. 48–72V rated. From $690.
Specs verified Jul 16, 2026
Where to Find
Prices tracked across 3 sellersPrice History
Price History
Price changes tracked by the crawler
Current best price $276.97. Over the past 90 days: low $276.97, high $689.90, average $308.73 — down 10% vs average.
- AliExpress - SIA Tech Store
- eBay - eBay - NBPower (eBay)
All Records
3 price records in this period
| Date | Price | Shipping | Total | Change | Coupon | Rating | Sales | In Stock | Status |
|---|---|---|---|---|---|---|---|---|---|
AliExpress - SIA Tech Store(2 records) | |||||||||
| May 29, 202608:33 PM | $276.97 | — | $276.97 | $0.00 | SSUS40−$40.00 | — | — | No | active |
| May 28, 202606:04 PM | $276.97 | — | $276.97 | Initial | — | — | — | No | active |
eBay - eBay - NBPower (eBay)(1 record) | |||||||||
| Jun 8, 202606:04 AM | $689.90 | — | $689.90 | 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
- 120mm
- Stator Height
- 70mm
- Pole Pairs
- 5
- Shaft Type
- Spline
- Cooling
- Air
Performance
- Wattage
- 2000W
- Rated Voltage
- 48–72V
- Rated RPM
- 2800
Electrical
- Flux Weakening RPM
- 4400RPM
Features
- PAS Sensor Type
- None
- Temp Sensor
- KTY83
- Has Encoder
- No
Physical
- Weight
- 10.8 kg
- IP Rating
- IP67
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 |
