Unitree R1-7a Overview
The Unitree R1-7a is a 7-axis bionic robotic arm priced from $1,650, weighing 5.5 kg, with a payload of 2 kg and a maximum reach of 650 mm with a dexterous hand.
Key Specifications
Specification | Unitree R1-7a |
Manufacturer | Unitree Robotics |
Model | R1-7a |
Category | Motion & positioning / 7-axis robotic arm |
Degrees of freedom | 7 |
Weight | 5.5 kg |
Payload | 2 kg |
Max reach | 650 mm, with dexterous hand |
Supply voltage | 24 to 60 V |
Interfaces | XT30 and CAN/485 |
User operating system | Ubuntu |
Control | Position and force control |
Force feedback and collision detection | Yes |
Joint speed | More than 180 degrees per second on all joints |
Price | From $1,650 |
Price | From USD 1,650 |
Prices are indicative, are not final and may change.
Applications
Embodied AI Research
Humanoid and Mobile Platforms
Education
Unitree R1-7a Review Summary
A seven-axis arm with force feedback for $1,650 is far below the usual price of such hardware. The R1-7a weighs 5.5 kg, carries 2 kg and reaches 650 mm with a dexterous hand. Unitree is open about the compromise: the joints use low reduction ratios, which makes them fast and back-drivable but limits positional stiffness, and the maker warns that positioning errors and oscillation can occur without well-tuned control. This is an arm for learning-based control and research, not for precise assembly.
Pros
From $1,650
Seven axes
Force feedback and collision detection
Fast joints
Battery voltage supply
Cons
Limited positional stiffness, by the maker's own statement
2 kg payload
Needs control expertise
Who It Is For
It fits laboratories and developers who train control policies and need many low-cost arms.
Full review: Unitree R1-7a Review: Specs, Price and Uses of the 7-Axis Bionic Robotic Arm
