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Unitree A1 Motor
Robotics

Unitree A1 Motor

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-07-10
Identity
Brand Unitree
Product Number A1-M-01
Category Robotics
Performance
Torque
40.0V4,744.00 oz-in
Speed
40.0V0.05 sec/60°
Running Current (add)
Stall Current 20–40 A
Rated Output Power 500.0 W
Radial Load 500.0 N
Physical
Weight 21.34 oz
Shape Cylindrical
Dimensions L 3.15 in
W
H

3.15 in
Shaft Size 10.0 mm
Case Material Aluminum
Drivetrain
Motor Type Brushless
Motor Drive FET
Gears Steel
Gear Ratio 9.1:1
Gear Spline/Teeth (add)
Rotation Mode (add)
Rotation/Support Dual Bearings
Backlash 0.050°
Control & Signal
Modulation Digital
Direction Bidirectional
Rotational Range (add)
Mechanical Limit (add)
Pulse Cycle (add)
Pulse Width (add)
Neutral Position (add)
Dead Band 1 µs
Refresh Rate 1000 Hz
Angle Sensor Magnetic Encoder
Control System RS485
Programmable Yes
Resolution 32,768 pulse/rev
MCU STM32
Operating Modes Position, Velocity, Torque
Signal Voltage 5V
Electrical & Environment
Operating Voltage 20–40 V
Power Source External
Regulator Type (add)
Temperature -10–60 °C
Water Rating IP67
Certification CE
Idle Current 200.000 A
Connectivity
Connector (add)
Wire Length 300 mm
Baud Rate 4.8 Mbps
Origin
Country of Origin (add)

Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.

Notes

Highly integrated joint motor with planetary reducer, 15-bit encoder, and FOC control. Features real-time feedback of torque, angle, and temperature. Designed for high-performance quadruped robots. Rated for 33.5 Nm peak torque.

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