CPM-80-25 Technical Datasheet v1.0¶
Status: Approved for Public
Release date: 2026-09-28
CPM-80-25 is an integrated cycloidal pinwheel robot joint module available as a motor-and-reducer assembly or with an integrated driver reference configuration.
Key Performance¶
| Parameter | Value |
|---|---|
| Transmission | Cycloidal pinwheel |
| Reduction ratio | 25:1 |
| Backlash | 5-10 arcmin |
| Rated output torque | 10 Nm |
| Peak output torque | 50 Nm |
| Rated output speed | 120 rpm |
| No-load output speed | 168 rpm |
| Rated motor power | 500 W |
| Operating voltage range | 24-48 VDC |
| Allowable radial force | 500 N |
| Allowable axial force | 500 N |
Note
Peak torque is not a continuous rating. Peak duration depends on current limit, voltage, duty cycle, installation and thermal conditions.
Configuration Comparison¶
| Configuration | Max. outer diameter | Axial thickness | Weight |
|---|---|---|---|
| No integrated driver | 80 mm | 29.7 mm | 430 g |
| Current integrated-driver reference | 80 mm | 41.2 mm | 512 g |
The integrated-driver values above describe the currently released reference outline. Future driver or encoder variants may use a different rear housing, cable routing or total thickness.
Motor and Electrical Parameters¶
| Parameter | Value |
|---|---|
| Motor KV | 104 rpm/V |
| Thermistor | 10 kOhm B3435 +/-1% |
| Phase inductance | 235 uH |
| Phase current full scale | 33 A |
| Rated bus current | 12 A |
| Static working bus current | 0.08 A |
| Motor structure | 18 slots / 20 poles |
| Phase resistance | 224 uOhm |
| NTC B value | 3435 |
| Back EMF constant | 0.0727 Vs/rad |
Driver and Control Configuration¶
The product can be supplied without an integrated driver or with a driver-equipped configuration.
Depending on the confirmed driver and project scope, available functions can include:
- CAN communication
- RS485 communication
- Position control
- Velocity control
- Torque control
- PID closed-loop control
Final protocol details, connector definitions, encoder configuration, current limits and firmware must match the quoted configuration.
Public Engineering Resources¶
Download STEP - Integrated Driver
View Measured Performance Data
Design-In Note¶
The public STEP files are simplified and intended for packaging, mounting and early mechanical evaluation. Request the controlled drawing before final tooling, tolerance stack-up or production release.
Engineering Contact¶
Wanrong Wang
International Sales / Sales Engineer, SigGear
wangwanrong@siggear.com