Planetary Joint Modules
What Is a Planetary Joint Module?
A planetary joint module integrates a brushless torque motor, planetary reducer, multi-turn absolute encoder and servo driver into a single compact unit. Unlike harmonic joints, planetary joints use a sun-planet-ring gear mechanism that distributes load across multiple teeth simultaneously — delivering higher torque capacity and superior shock resistance for demanding applications.
GTIT’s Planetary Joint Modules:
Self-developed and self-manufactured under SPC-controlled processes with annual capacity exceeding 100,000 units. The hollow-shaft design (hollow ratio > 50%) enables clean internal cabling, eliminating external harness interference — a critical feature for robot arm design.
Key Specifications:
Peak Torque Density: 222 N·m/kg
Backlash: < 1 arcmin (hollow-shaft, hollow ratio > 50%)
Encoder: 16/18-bit multi-turn absolute encoder
Communication: CANopen · EtherCAT
Protection: IP65
Applications:
AGV & AMR Systems · Smart Warehousing · Collaborative Robots · Heavy-Duty Automation · Precision Automation
FAQ:
Q: What is the production capacity?
A: Over 100,000 units annually under SPC-controlled processes with full lot traceability.
Q: What communication protocols are supported?
A: CANopen and EtherCAT as standard. Custom protocol integration available.