CPM-100-25 Integrated Cycloidal Joint Module¶
Product Overview¶
CPM-100-25 is a compact, high-torque robot joint module using an integrated cycloidal pinwheel transmission. Its 100 mm outer diameter and 29.5 mm axial thickness make it suitable for robot joints that require high torque in a low-profile package.
The product can be supplied with or without an integrated driver. Driver, encoder, communication and closed-loop control functions apply only to the configuration confirmed in the quotation.
The image above shows the version without an integrated driver.
Product Identity¶
| Item | Description |
|---|---|
| Model | CPM-100-25 |
| Product type | Integrated cycloidal robot joint module |
| Transmission | Cycloidal pinwheel |
| Main material | Steel |
| Driver configuration | With or without integrated driver |
Key Benefits¶
- 25 Nm rated output torque
- 75 Nm peak output torque
- 29.5 mm low-profile thickness
- 5-10 arcmin backlash
- 24-48 VDC operating range
- 500 N allowable radial load
- Optional integrated control configuration
Key Specifications¶
| Parameter | Value |
|---|---|
| Transmission structure | Cycloidal pinwheel |
| Outer diameter | 100 mm |
| Product thickness | 29.5 mm |
| Reduction ratio | 25:1 |
| Backlash | 5-10 arcmin |
| Operating voltage | 24-48 VDC |
| Rated motor power | 213 W |
| Rated output speed | 60 rpm |
| No-load output speed | 90 rpm |
| Rated output torque | 25 Nm |
| Peak output torque | 75 Nm |
| Weight | 630 g |
| Allowable radial force | 500 N |
| Allowable axial force | 300 N |
Peak Torque Condition¶
Peak torque: 75 Nm
Peak duration depends on operating voltage, current limit, duty cycle and thermal conditions. Confirm the required peak-torque duration with SigGear before selection.
Motor and Electrical Parameters¶
| Parameter | Value |
|---|---|
| Motor KV value | 63 rpm/V |
| Thermistor | 10 kOhm, B3435, +/-1% |
| Phase inductance | 290 uH |
| Phase current full scale | 33 A |
| Rated bus current | 15 A |
| Static working bus current | 0.08 A |
| Back-EMF constant | 0.143 Vs/rad |
Driver and Encoder Configuration¶
SigGear has confirmed a separate CPM-100-25 dual-encoder variant, internally identified by the controlled drawing code SG2556D. This variant has a different mechanical envelope and must not be mixed with the base configuration.
CPM-100-25 Dual Encoder Variant Reference
Representative supply configurations include:
- Without integrated driver: motor and cycloidal transmission assembly for connection to an external driver selected by the customer or project.
- With integrated driver: driver housing, interface and control hardware are integrated into the selected module configuration.
Encoder, communication, closed-loop control, connector and cable details must be confirmed in the quotation and technical agreement.
Mechanical Load Capacity¶
| Parameter | Value |
|---|---|
| Allowable radial force | 500 N |
| Allowable axial force | 300 N |
Actual suitability depends on mounting geometry, load position, duty cycle, speed and shock loading.
Recommended Applications¶
- Humanoid robot joints
- Quadruped robot joints
- Robotic arms
- Exoskeleton systems
- Rehabilitation robots
- Compact industrial automation joints
- Research and development platforms
Product Images¶
Version without integrated driver¶
Version with integrated driver¶
The images show representative configurations. The version without an integrated driver is intended for connection to an external drive solution selected for the project. The driver-equipped version includes the selected driver housing and interface arrangement. Final driver, encoder, connector, cable, communication and control functions must be confirmed in the quotation.
Public Engineering Resources¶
CPM-100-25 Technical Datasheet v1.0 Mechanical Interface Reference v1.0 Dual Encoder Variant v1.0
Confirmed Dual-Encoder Variant¶
The controlled SG2556D drawing is confirmed as the CPM-100-25 dual-encoder variant. The drawing records 100 mm maximum outer diameter, 48 mm overall axial dimension, DC 48V, 60 RPM rated output speed, 25 Nm rated output torque, 125±10% RPM no-load speed, 1.1 A no-load current and 853 g weight.
These values belong to the dual-encoder configuration and do not replace the base 29.5 mm / 630 g public configuration.
| Dual-encoder controlled item | Value |
|---|---|
| Dual encoder variant code | SG2556D |
| Dual encoder variant outer diameter | 100 mm |
| Dual encoder variant axial dimension | 48 mm |
| Dual encoder variant rated voltage | DC 48V |
| Dual encoder variant rated speed | 60 RPM |
| Dual encoder variant rated torque | 25 Nm |
| Dual encoder variant no-load speed | 125±10% RPM |
| Dual encoder variant no-load current | 1.1 A |
| Dual encoder variant weight | 853 g |
CAD and Technical Files¶
A public STEP model is not currently released in this repository for CPM-100-25. STEP models, 2D drawings, detailed mounting drawings and configuration-specific interface documents are available upon request. Please include your application, required torque, speed, voltage, estimated quantity and preferred driver configuration.
Request CAD Files: Contact Wanrong Wang
Noise, Life and Thermal Data¶
Noise-test records, service-life parameters and application-specific thermal limits are provided after application review. These values are not published as universal specifications because they depend on installation, load, speed, lubrication, duty cycle and thermal conditions.
Selection Information Required¶
Please provide:
- Application and installation position
- Rated and peak torque
- Required peak-torque duration
- Required output speed
- Operating voltage
- Size and weight limits
- Duty cycle
- Radial and axial loads
- Driver, encoder and communication requirements
- Estimated prototype and annual quantity
Related Selection and Application Guides¶
Robot Joint Actuator and Gearbox Selection Guide Humanoid Robot Joint Actuators and Gearboxes Robotic Arm Joint Actuators and Gearboxes Exoskeleton Joint Actuators and Gearboxes Custom Cycloidal Transmission Engineering Request CAD, Sample and Quote
Contact SigGear¶
Wanrong Wang
International Sales, SigGear
wangwanrong@siggear.com