Unitree D1 Robotic Servo Arm for Research and Education

Compact 6-Axis Control

The Unitree D1 offers a full 6-axis servo layout paired with a responsive gripper, giving developers, educators, and R&D teams a controllable workspace ready for real tasks. Each joint delivers broad rotation ranges — ±135°, ±90°, or ±135° depending on the axis — enabling arcs, reach-arounds, and accurate placement routines within structured or dynamic environments.

Reach That Fits Real Projects

Its reach spans 550 mm without the gripper or 670 mm with it attached, giving the arm enough working envelope for manipulation experiments, sensor handling, and workstation-scale automation trials. The footprint stays compact, which suits benchtop rigs, teaching labs, and field robotics packages alike.

Payload Ready for Prototyping

A 500 g payload rating allows the D1 to work comfortably with small tools, environmental probes, training props, and lightweight components. It’s well suited to algorithm development, perception-driven manipulation, and iterative prototyping workflows that involve repeated grasping or fine-positioning tasks.

Servo Architecture Built for Consistency

Its bus-servo design gives the joints stable torque output and predictable motion behaviour. This makes trajectory testing, planner evaluation, and repetitive pick-place cycles more dependable. Defined joint limits simplify kinematics work, simulation setup, and path-planning pipelines used in both research and advanced teaching environments.

Straightforward Power & Connectivity

Running the arm requires only 24 V at 2.5 A (5 A peak). Communication is handled through RJ45, with a DC5.5-2.1 input for power and a USB-C port available for debugging or tuning. These connections make the D1 adaptable across research benches, custom test rigs, and robot compute stacks that use standard power rails and Ethernet-based control.

Lightweight Build for Flexible Mounting

At around 2.37 kg, the arm stays light enough for a wide span of mounting options — tabletops, aluminum frames, static testing stands, or mobile platforms. The low mass reduces structural requirements, enabling quick setup changes during experimentation or curriculum development.

• Six-axis servo architecture suited to manipulation research, AI training, and autonomous grasping trials.
• Gripper-equipped end effector for handling small tools, components, sensors, and test objects.
• Broad joint rotation ranges allowing workspace coverage for pick-place routines, sorting tasks, and tabletop automation.
• Reach suitable for desktop robotics rigs, mobile-robot payloads, and compact teaching stations.
• Lightweight build enabling quick mounting on frames, workbenches, and mobile platforms.
• Standard power and communication interfaces supporting integration into custom robotics stacks.
• Motion stability that supports repeated trajectory evaluation and control-algorithm development.
• Payload rating suited to prototyping in education, research, and early-stage automation design.

Degrees of freedom: 6 axes + gripper
Payload capacity: 500 g
Reach: 550 mm without gripper, 670 mm with gripper
Joint rotation limits: J1: ±135° J2: ±90° J3: ±90° J4: ±135° J5: ±90° J6: ±135°
Power input: 24 V / 2.5 A (5 A peak)
Power consumption: 60 W
Interfaces: DC5.5-2.1 (power), RJ45 (communication), USB-C (debugging)
Motor type: bus servo system