Actuator

ROBOT MODULE

Overview

The Robot Module is a core component that drives the joints or actuators of a robot, integrating motor, gearbox, sensors, and controller into a high-performance unit.
Optimized for robot designs requiring precise control and high torque.

Robot Module Series
Driving Module Joint Module
Category AMR Wheel Drive Module Robot Joint Module
Function AMR Movement and Control Robot Arm Motion Control
Main Operation Continuous Rotation Bidirectional Rotation (Precision Control, Position Holding)
Features Designed for Speed, Durability, Efficiency Designed for Precision, Torque, Responsiveness
Control Method Speed Control Position and Torque Control
Applications AMR/AGV Wheels, Electric Wheelchairs, etc. Collaborative Robots, Industrial Robots, Humanoid Robots, etc.
Features and Components

The Robot Module is a core system to drive robot joints or actuators, composed of the following integrated components.

Adapter
  • Spline join for precise positioning.
  • Custom adapters can be designed depending on the application.
Friction Brake
  • Provides safety factor margin against robot load.
  • Shortened brake on/off response time.
  • Optimized for pad wear, temperature effects, and residual torque.
  • Prevents heat damage during emergency stop (1–2 stops).
Gear Reducer
  • High durability with minimal backlash (1–5 arc-min).
  • High torsional rigidity suitable for precision control.
  • Bearing preload and allowance for thermal expansion.
  • Reduction ratio: 1:50 ~ 1:160
Absolute Encoder
  • High-resolution detection of joint absolute position (angle).
  • Maintains zero position even after power restart.
  • Optical type
  • Resolution: 17–22 bit
  • EMI shielding and zero calibration
Casing
  • Made of aluminum alloy.
  • Includes bearing seats, stator fixing slots, and cable channels.
  • IP65 rating ensured.
  • Structural rigidity vs Balancing lightweight design.
  • Integrated thermal path for motor heat dissipation.
Torque Sensor
  • Measures actual torque transmitted to the reducer output shaft.
  • Strain gauge type
  • Magnetic induction type (non-contact)
  • Ensures linearity within rated torque range.
  • Zero-point adjustment and calibration.
BLDC Motor
  • High pole design for high torque density.
  • Incorporates cooling structure.
  • Precision tolerance applied to rotor concentricity.
DC Inlet
  • Integrated control of DC input, encoder signals, brake control, and torque sensor output.
  • Ensures harness vibration durability and optimized fastening torque.
  • Waterproof function (IP65)
Inquiries
PM Noh Tae-won (nenun@naraauto.com)