Overview
The HONPINE HPJM-RE70-90-PRO Motor (HPJM-RE70-90-PRO-XX) is a robot joint motor module with selectable reduction ratios of 1:51 / 1:81 / 1:101 / 1:121. It is specified with a hollow-shaft absolute multi-turn encoder (17-bit per motor revolution, multi-turn counter 2^16 (65,536)) and CAN communication, for integration in robotics joints and motion axes.
Key Features
- Reduction ratio options: 1:51 / 1:81 / 1:101 / 1:121
- Rated speed (by ratio): 61 / 38 / 30 / 25 RPM
- Max allowable average load torque (by ratio): 42 / 58 / 61 / 61 N.m
- Peak torque (start/stop) (by ratio): 69 / 91 / 102 / 108 N.m
- 500 W motor power; supply voltage 24-48 V
- Hollow shaft absolute multi-turn encoder; 17-bit resolution per motor revolution; 2^16 (65,536) multi-turn counter
- Through hole diameter: 18 mm
- Communication bus: CAN
Specifications
| Parameter | 1:51 | 1:81 | 1:101 | 1:121 |
|---|---|---|---|---|
| Reduction ratio | 1:51 | 1:81 | 1:101 | 1:121 |
| Peak torque (start/stop) | 69 N.m | 91 N.m | 102 N.m | 108 N.m |
| Max. allowable average load torque | 42 N.m | 58 N.m | 61 N.m | 61 N.m |
| Rated torque | 32 N.m | 42 N.m | 50 N.m | 50 N.m |
| Peak speed | 77 RPM | 48 RPM | 40 RPM | 30 RPM |
| Rated speed | 61 RPM | 38 RPM | 30 RPM | 25 RPM |
| Backlash | 20 arcsec | 20 arcsec | 10 arcsec | 10 arcsec |
| Motor power | 500 W | 500 W | 500 W | 500 W |
| Max. continuous current | 8.4 A | 8.4 A | 8.4 A | 8.4 A |
| Rated current | 6.1 A | 6.1 A | 6.1 A | 6.1 A |
| Motor torque constant | 0.111 N·m/A | 0.111 N·m/A | 0.111 N·m/A | 0.111 N·m/A |
| Encoder type | Hollow Shaft Absolute Multi-turn Encoder | Hollow Shaft Absolute Multi-turn Encoder | Hollow Shaft Absolute Multi-turn Encoder | Hollow Shaft Absolute Multi-turn Encoder |
| Encoder resolution (per motor rev) | 17 bit | 17 bit | 17 bit | 17 bit |
| Multi-turn counter | 2^16 (65,536) | 2^16 (65,536) | 2^16 (65,536) | 2^16 (65,536) |
| Weight (without brake) | 1.25 kg | 1.25 kg | 1.25 kg | 1.25 kg |
| Length (without brake) | 72.6 mm | 72.6 mm | 72.6 mm | 72.6 mm |
| Weight (with brake) | 1.67 kg | 1.67 kg | 1.67 kg | 1.67 kg |
| Length (with brake) | 96.6 mm | 96.6 mm | 96.6 mm | 96.6 mm |
| Supply voltage | 24-48 V | 24-48 V | 24-48 V | 24-48 V |
| Communication bus | CAN | CAN | CAN | CAN |
| Through hole dia (with Single Encoder CAN/CANopen) | 18 mm | 18 mm | 18 mm | 18 mm |
| Rotor inertia (with Single Encoder CAN/CANopen) | 596.4 g * cm^2 | 596.4 g * cm^2 | 596.4 g * cm^2 | 596.4 g * cm^2 |
| Rotor inertia with brake (with Single Encoder CAN/CANopen) | 746.7 g * cm^2 | 746.7 g * cm^2 | 746.7 g * cm^2 | 746.7 g * cm^2 |
| Through hole dia (with Dual Encoders CAN/Ethercat) | 18 mm | 18 mm | 18 mm | 18 mm |
| Rotor inertia (with Dual Encoders CAN/Ethercat) | 622.79 g * cm^2 | 622.79 g * cm^2 | 622.79 g * cm^2 | 622.79 g * cm^2 |
| Rotor inertia with brake (with Dual Encoders CAN/Ethercat) | 783.02 g * cm^2 | 783.02 g * cm^2 | 783.02 g * cm^2 | 783.02 g * cm^2 |
Applications
- Humanoid robots
- Robotic arms
- Exoskeletons
- Quadruped robots
- AGV vehicles
- ARU robots
Manuals
- Installation drawing (PDF)
- HPJM-RE70-90-PRO Motor 3D Model (STEP)
- Product structure diagram (PDF)
- HPJM-RE70-90-PRO (Honpine) Harmonic Robot Joint Module (PDF)
Details

Select the HPJM-RE70-90-PRO motor module with 1:51, 1:81, 1:101, or 1:121 reduction to balance torque and speed for compact robot joints.
