Electric servo-actuator HAT series

rotaryintegratedwith integrated displacement encoder

Introduction
The HAT series hollow-shaft and standard harmonic-drive rotary actuators integrate the harmonic drive, motor and absolute multi-turn encoders (Tamagawa protocol). Supported models: HAT11, HAT14, HAT17, HAT20, HAT25, HAT32, HAT40, HAT50, HAT58. Rated torque range 4 N·m to 1200 N·m; hollow-shaft diameters and external dimensions vary by model. Dual-encoder and custom configurations available. End-face mounting supported for space-constrained installations.

Features

• Hollow through-wire design: Through bore permits routing of motor cables, sensor lines or hydraulic/pneumatic tubing through the joint to avoid exposed cabling—suitable for collaborative robots, multi-joint manipulators and serial-link equipment.
• High integration: Motor, encoder and optional brake are integrated in a compact unit for simplified mechanical and electrical connection.
• Long service life & low maintenance: Harmonic gearing distributes tooth wear and reduces shock loads; minimal lubrication and maintenance under normal operating conditions.
• Environmental adaptability: Reliable operation in dusty or humid environments; selected models rated for -40°C to 70°C.
• Flexible operation: Designed for tight weight and space constraints while maintaining positioning performance.

Applications

• Joints for collaborative and industrial robots
• Multi-axis manipulators and serial robotic arms
• Aerospace actuation units, inspection systems and automated assembly lines
• Installations requiring cable/tube pass-through in confined spaces

Key specifications (excerpt)

• Models: HAT11, HAT14, HAT17, HAT20, HAT25, HAT32, HAT40, HAT50, HAT58
• Reduction ratios: examples 51, 81, 101, 121, 161 (model dependent)
• Rated torque (N·m): approx. 4 – 1200 (variant dependent)
• Peak torque (N·m): up to approx. 1964 (variant dependent)
• Rated / max speed (RPM): nominal up to ~118 RPM; max up to ~118 RPM (model dependent)
• Hollow shaft diameter (examples): ø9–ø50 mm (model dependent)
• Mass (typical): approx. 1.17 kg – 32 kg (model dependent)
• Encoders: Tamagawa-protocol absolute multi-turn; single- or dual-encoder options

Notes
Values are indicative. Contact sales for exact variant parameters, mounting details and configuration options.