Unitree A1 Motor A1 Integrated RS-485 Motor Module 33.5NM 21.0rad/s(@24VDC) 12-30VDC 605g

Overview

The Unitree A1 Motor is an integrated motor module designed for robotics joints and other large-load machinery. It features a planetary reducer, ultra-thin design, and a compact body weight of about 605g, with RS-485 communication and real-time sensor feedback (torque, angle, angular velocity, angular acceleration, temperature).

Key Features

• Stable and efficient; maintenance convenient
• Ultra-thin design fuselage
• Extreme-optimized planetary reducer
• Strong power
• Highly integrated structure
• Crossed roller bearing
• Temperature sensor and position sensor
• Low copper consumption coil
• Integrated design: motor body and controller in one; plug to achieve plug and play
• Quick disassembly structure design for easier maintenance
• Closed design to avoid debris entering the motor inside
• Oversized industrial grade crossed roller bearings: resistant to axial impact, high precision, and long life
• Real-time reading of sensor data
  Motor sensing feedback: Torque, Angle, Angular Velocity, Angular Acceleration, Temperature
  Motor control instruction: Torque, Angle, Angular Velocity, Stiffness, Damping

Windings & Stator Notes

• The electronic wire adopts dip paint technology to better dissipate heat from the motor temperature.
• Single-strand winding reduces resistance loss and reduces the current interference between copper wires while making the motor more beautiful.
• The stator has electrophoresis and high-temperature coating process that can pass the 48 hours salt spray test with the superior rust resistance and insulation performance.
• The 0.2 mm silicon steel sheet material is selected to reduce iron consumption.

Performance Text (from product materials)

• Instant Burst of Power: can be adapted to a variety of large-load machinery and equipment such as foot robots, with greater torque and more stability.
• The output maximum torque is 33.5 N.m; maximum joint speed is 21 rad/s.

Engineering/Analysis Figures (text shown in product materials)

• Optimize the Magnetic Circuit Design: Improve the flux utilization, sine the counter electric potential, low Cogging Torque.
  Time =4742857.14285713ns; Speed =1000.000000rpm; Position =34.885713deg
• Motor Streamline Diagram: Thousands time of motor streamline calculations guarantee the stability and reliability of the motor in any state of motion.
• Temperature Monitoring Sensor: The motor has its own temperature monitoring sensor to effectively prevent the motor from being damaged due to temperature abnormalities.
• FOC Control Characteristic Plot: FOC control, low torque ripple, low noise, smoother operation.

Specifications

Applications

• Humanoid robots
• Robotic arms
• Exoskeletons
• Quadruped robots
• AGV vehicles
• ARU robots

What’s Included

• High-Speed Single-Channel RS-485 Communication Module x 1
• XT30 Power Cable x 1
• GH1.25 Data Cable x 1
• XT30 (2 + 2) Power & Signal Cable x 1
• XT30 (2 + 2) Adapter Board x 1

Documents

• Unitree_A1_Motor.stp
• Unitee_A1_Motor_instalation_drawing

For pre-sales and integration support (power, RS-485 wiring, and control bring-up), contact support@rcdrone.top or visit https://rcdrone.top/.

Details

The Unitree A1 motor’s compact integrated housing and front mounting flange support tidy, space-conscious installations.

The Unitree A1 integrated RS-485 motor module lists crossed roller bearing, temperature and position sensing, and a low copper consumption coil.

The Unitree A1 integrated motor module uses coated windings and a treated stator design, including a 0.2 mm silicon steel sheet material called out for reduced iron consumption.

The Unitree A1 integrated motor module combines motor and controller in one unit and supports real-time sensor feedback such as torque, angle, velocity, and temperature.

Unitree A1 motor design visualization shows the stator magnetic circuit with a color flux distribution scale for reference.

Motor velocity streamline visualization helps assess airflow and flow patterns around the rotor during operation.

The Unitree A1 integrated motor module includes a built-in temperature monitoring sensor to help detect overheating conditions.

The FOC control characteristic plot maps input DC current, RS speed (rpm), output power (W), and efficiency (%) against torque (N·m) for reference during tuning and load planning.

The kit includes a single-channel RS-485 communication module plus XT30 power/signal leads, a GH1.25 data cable, and an XT30 (2+2) adapter board.