eRob90I Robot Joint Module

High Integration, Plug-and-Play

One-Stop Solution: Eight core components — frameless torque motor, harmonic reducer, dual absolute encoders, servo driver, optional torque sensor, and brake — are integrated into a single unit. This saves developers from selecting, designing, procuring, and assembling hundreds of mechanical and electronic components, significantly accelerating robot development.

Rich Communication Interfaces: Compatible with major industrial bus protocols including EtherCAT, CANopen, and Modbus. It also offers open, real-time PID adjustment for position, velocity, and current loops, enabling seamless integration into a wide range of robot control systems.

Ultra-High Precision: Dual absolute encoders provide full closed-loop control, delivering repeat positioning accuracy as high as ±7 arc-seconds and absolute positioning accuracy up to ±15 arc-seconds (on high-precision models). Real-time compensation of reducer transmission errors is supported, and position is retained even after power-off.

High Power: Offers a choice of multiple reduction ratios (20-120), with a peak start-stop torque of up to 113 Nm and a maximum instantaneous allowable torque of 191 Nm, capable of satisfying demanding high-load applications. The integrated friction brake enables zero-speed startup under full load and tolerates emergency stops at 100% full speed under heavy load.

Flexible Design and Selection

Two Structural Forms: Type I (in-line) and Type T (right-angle). Type I is more compact (v6: 75.9mm length, 1.5kg weight), ideal for space/weight-constrained applications. Type T enables modular corner mounting with a simpler structure.

Optimized Details: Standard 18mm center through-hole across all models allows cables and air lines to pass through, simplifying wiring. IP65 (Type T) and IP54 (Type I) protection ratings suit different environments.

Optional Upgrades: Torque sensors (for fine force control) or high-precision encoders (for enhanced absolute positioning accuracy) can be configured as needed, offering flexible customization.

Application of robot joint modules

Our robotic joint modules can be widely used in the following industries: in the field of industrial robotics, they are used for welding, spraying, and assembly on automotive and 3C electronics production lines; in the medical and healthcare field, they are applied in laparoscopic surgery and exoskeleton robots; in the logistics and warehousing field, they are used for handling and sorting in confined spaces; in the cutting-edge technology field, they serve as the core joints for humanoid robots and bionic robots. With their high precision, high torque density, and modular design, our products can significantly simplify the structure of robotic arms.