
HR Series Planetary Joint Module
by Zhidongli · Wuhan, Hubei (also Wuxi, Jiangsu) · Joint modules
Planetary-gear rotary joint module with 48 V motor and EtherCAT, in 88 N.m and 55 N.m rated torque sizes.
Tell us the country, voltage and quantity. Our team in Austin and Bogotá checks certification, lead time and service with Zhidongli, then sends you a quote in USD.
English or Spanish · No cost to request · Quotes in USD
Full specifications
| Rated torque | 88 N·m / 55 N·m |
|---|---|
| Max acceleration/deceleration torque | 250 N·m / 150 N·m |
| Rated speed | 70 rpm |
| Peak speed (no load) | 90 rpm / 100 rpm |
| Rated power | 680 W / 420 W |
| Rated voltage | 48 V |
| Rated current | 20 A / 11 A |
| Peak current | 60 A / 35 A |
| Encoder | Multi-turn absolute encoder |
| Gearbox | Planetary, ratio 50 |
| Transmission accuracy | 5 arcmin |
| Average service life | 10,000 h |
| Communication | EtherCAT |
| Diameter | 110 mm / 90 mm |
| Length | 102 mm / 108 mm |
| Weight | 2.1 kg / 1.5 kg |
| Protection rating | IP40 |
As printed in the Zhidongli catalog, page 4. Confirm final specs in your quote.
What it does well
- Torque density 120 N·m/kg on the top module (company claim)
- Customization available
Applications
Industries
Watch Zhidongli machines run
Filmed at the Zhidongli booth, CIIF 2026, Shanghai.
More from Zhidongli

HT Series Linear Joint Module
3 sizesRobot joint · Zhidongli
IP40

HA Series Humanoid Arm
2 sizesRobot joint · Zhidongli
5 kg11 lb payload · 860 mm33.9 in reach · 7-axis

FA6R Desktop Arm
Cobot · Zhidongli
3 kg6.6 lb payload · 600 mm23.6 in reach · 6-axis

Yare Cerebellar Controller
Controller / IPC · Zhidongli
Specs on request

L1 Humanoid Wheeled Robot
Robot joint · Zhidongli
1.5 kg3.3 lb payload · 600 mm23.6 in reach
Compare with other makers

CasiaHand M6 Dexterous Hand
Robot joint · CasiaHand
10 kg22 lb payload

CasiaHand M11 Dexterous Hand
Robot joint · CasiaHand
5 kg11 lb payload

CasiaHand X7 Dexterous Hand
Robot joint · CasiaHand
15 kg33 lb payload

CasiaHand X12 Dexterous Hand
Robot joint · CasiaHand
30 kg66 lb payload

Gongshu Series Humanoid Robot
Robot joint · KAANH
200 kg441 lb payload · 1,323 mm52.1 in reach