Unitree Robotics -- Official Robotic Arm

Product Overview

The Unitree Dedicated D2 Basic Arm is a high-performance 7-DOF robotic arm designed for flexible automation, research, and industrial applications. With 7 degrees of freedom and a maximum joint torque of 44.3 lb·ft (60 N·m), the D2 Basic achieves human-like dexterity and robust load handling. Constructed with industrial-grade cross-roller bearings and internal-rotor permanent magnet synchronous motors, it ensures high precision and high load capacity in a lightweight 13.0 lb (5.9 kg) package. The unique elbow design folds 180°, offering dual configurations (robotic arm and arm-only). Integrated with a Cortex-M33 32-bit processor, it supports a 500 Hz control cycle and multiple control methods, including SDK, host computer, and drag-and-drop teaching.

Extensive Joint Motion Range

The D2 Basic Arm distributes 7 degrees of freedom across its joints with an extensive motion range optimized for maximum reach and dexterity:

• J1 Joint: -156° to 156° | Peak torque 44.3 lb·ft (60 N·m), maximum speed 18.7 rad/s. Provides the primary base rotation for wide workspace coverage.
• J2 Joint: 0° to 195° | Peak torque 44.3 lb·ft (60 N·m), maximum speed 18.7 rad/s. Delivers powerful shoulder movement for heavy lifting and positioning.
• J3 Joint: -160° to 160° | Peak torque 44.3 lb·ft (60 N·m), maximum rotational speed 18.7 rad/s. Enables deep reach and complex spatial positioning.
• J4 Joint: -180° to 0° | Peak torque 22.1 lb·ft (30 N·m), maximum rotational speed 52.4 rad/s. High-speed wrist rotation for rapid orientation changes.
• J5 Joint: -102° to 102° | Peak torque 22.1 lb·ft (30 N·m), maximum speed 52.4 rad/s. Provides precise pitch control for end-effector alignment.
• J6 Joint: -90° to 90° | Peak torque 7.4 lb·ft (10 N·m), maximum speed 37.7 rad/s. Fine-tuned roll adjustment for delicate manipulation tasks.
• J7 Joint: -90° to 90° | Peak torque 7.4 lb·ft (10 N·m), maximum speed 37.7 rad/s. Final joint orientation for exact tool or gripper positioning.

Control System & Interfaces

The D2 Basic Arm provides comprehensive real-time control and flexible integration options for advanced robotics applications:

Communication & Power Interfaces

The D2 Basic Arm offers robust communication and power options optimized for industrial and research environments:

What's Included (Per Arm)

Each D2 Basic Arm package contains the following components for a single robotic arm:

Important Notes

• End-effector not included. Grippers and tools must be sourced separately based on specific application requirements.
• Power adapter not included. The arm can be powered directly via the XT30 power connector (36V-58V). Ensure your power supply can handle the 870W peak load.
• Payload vs. Maximum Load: Rated payload is 6.6 lb (3 kg); maximum load is approx. 11.0 lb (5 kg). Ensure operational loads do not exceed maximum limits to maintain precision and warranty.
• Firmware upgrades are performed via IAP. Ensure stable power during the upgrade process.
• Secondary development requires advanced programming knowledge and familiarity with robotics control concepts, UDP/Serial communication protocols, and multi-DOF kinematics.

Technical Specifications