Harmonic Joint Modules
What Is a Harmonic Joint Module?
A harmonic joint module integrates a precision harmonic reducer, brushless servo motor, absolute encoder, servo driver and brake into a single compact unit. The harmonic reducer uses a flexible spline and wave generator mechanism to achieve near-zero backlash and high reduction ratios in a single stage — making it the preferred choice for applications requiring extreme positioning accuracy.
GTIT PRO-2 Series:
GTIT’s PRO-2 series harmonic joint modules cover 9 model identifiers (RI30 to RI110) across 12 specifications, spanning a torque range of 5.9–900 N·m. Each module is a fully integrated mechatronic unit — motor, reducer, encoder, driver and brake pre-matched and tested as one system, eliminating multi-vendor integration complexity.
Key Specifications:
Models: RI30 / RI40 / RI50 / RI60 / RI70 / RI80 / RI90 / RI100 / RI110 (9 model identifiers, 12 specifications total)
Torque range: 5.9 – 900 N·m
Backlash: as low as 10 arcsec (0.17 arcmin)
Encoder: 17/19 bit absolute encoder
Communication: CANopen · EtherCAT
Power supply: 24–48V DC
Integrated brake for holding torque
Applications:
Humanoid Robots · Collaborative Robot Arms · Service Robots · Automated Systems · Robotic Actuators
FAQ:
Q: What is the advantage of harmonic vs. planetary joint modules?
A: Harmonic joints offer lower backlash (near-zero) and higher single-stage reduction ratios, ideal for applications requiring extreme positioning accuracy. Planetary joints offer higher torque capacity and better shock resistance for heavy-duty applications.
Q: Do you provide CAD models and integration support?
A: Yes. 3D CAD models, technical drawings and application-specific integration guidance are provided at no additional charge.