About
Unitree Robotics -- Official Robotic Arm
Unitree R1-7a Professional E Robotic Arm
Official 13-DOF collaborative robotic arm system designed for the Unitree R1 humanoid robot platform. The R1-7a Professional E includes all features of the R1-7a Standard arm and comes equipped with the BrainCo five-finger dexterous hand Revo 2 Basic (with RGB camera). With 13 total degrees of freedom (7 arm joints + 6 dexterous hand DOF across 11 joints), 0.1° repeat control accuracy, low-inertia high-speed inner-rotor PMSM motors delivering 44.3 lb·ft (60 N·m) max joint torque, and a compact 6.3" (160 mm) hand height, it provides a complete five-finger dexterous manipulation solution with integrated visual feedback. Available in left-arm and right-arm mirror-image versions.
Product Overview
The Unitree R1-7a Professional E Robotic Arm is a complete 13-DOF manipulation system designed for the Unitree R1 humanoid robot platform. Building on the proven R1-7a Standard arm with its 7 degrees of freedom and 44.3 lb·ft (60 N·m) maximum joint torque, the Professional E variant adds the BrainCo five-finger dexterous hand Revo 2 Basic (with RGB camera) as standard equipment, bringing the total system to 13 degrees of freedom (7 arm joints + 6 dexterous hand DOF distributed across 11 joints).
The arm features low-inertia high-speed inner-rotor PMSM bionic joint motors with high torque and high burst output, housed in a lightweight metal body with engineering plastic components. The integrated BrainCo Revo 2 Basic dexterous hand features a five-finger architecture with 6 DOF, 11 joints, 0.1° repeat control accuracy, and a height of 6.3" (160 mm) from middle fingertip to palm root. The hand includes an integrated RGB camera for visual feedback. Each arm joint utilizes dual encoders for precise feedback. Supports flexible mounting (upright, side, inverted) and offers high-speed 485 communication for the arm.
13-DOF Complete System
7 arm joints plus 6 dexterous hand DOF (across 11 joints) deliver a fully integrated five-finger manipulation solution. BrainCo Revo 2 Basic hand with RGB camera included.
BrainCo Revo 2 Five-Finger Hand
Five-finger dexterous hand with 6 DOF, 11 joints, 0.1° repeat control accuracy, and 6.3" (160 mm) height. Human-like dexterity for complex manipulation tasks.
44.3 lb·ft (60 N·m) Torque
7 independent joints driven by low-inertia high-speed inner-rotor PMSM bionic joint motors. High burst output enables robust manipulation and dynamic humanoid tasks.
Dual Encoder Per Joint
Each of the 7 arm motors is equipped with a dual encoder system for redundant, high-resolution position feedback and reliable closed-loop control.
Flexible Mounting
Supports upright, side, and inverted mounting configurations. Adapts to various humanoid robot body configurations and workspace requirements.
High-Speed 485 Communication
High-speed 485 communication protocol for the arm. Robust, noise-resistant protocol suitable for humanoid robot integration and industrial environments.
BrainCo Revo 2 Basic Five-Finger Dexterous Hand
The R1-7a Professional E comes equipped with the BrainCo Revo 2 Basic five-finger dexterous hand, providing advanced human-like manipulation capability with integrated visual feedback:
BrainCo Revo 2 Basic -- Standard Equipment
- Type: Five-finger dexterous hand (with RGB camera).
- DOF: 6 degrees of freedom distributed across the five-finger architecture.
- Joints: 11 joints enabling complex finger articulation and human-like grasping patterns.
- Repeat Control Accuracy: 0.1° -- high-precision repeatability for consistent manipulation performance.
- Height: 6.3" (160 mm) from middle fingertip to palm root -- compact form factor optimized for humanoid integration.
- RGB Camera: Integrated camera for on-hand visual feedback during manipulation tasks.
Five-Finger Architecture
The BrainCo Revo 2 Basic features a five-finger architecture with 6 DOF across 11 joints, enabling human-like dexterity and versatile grasping patterns:
Thumb
Opposable thumb design enables precision pinch grasps, power grasps, and complex in-hand manipulation. Critical for human-like dexterity.
Index Finger
Independent articulation for pointing, trigger-style manipulation, and fine tactile exploration. Supports precision and power grasp modes.
Middle Finger
Central finger provides stability and force distribution during object manipulation. Key contributor to power grasp envelope.
Ring Finger
Supports power grasp completion and lateral stabilization. Works in coordination with pinky for secure wrapping of large objects.
Pinky Finger
Completes the five-finger architecture for adaptive grasping and in-hand manipulation of complex objects. Enhances grasp security.
11 Joints, 6 DOF
11 joints distributed across five fingers with 6 active degrees of freedom. Enables complex finger coordination and human-like manipulation patterns.
Integrated RGB Camera
The BrainCo Revo 2 Basic dexterous hand features an integrated RGB camera, providing critical visual feedback directly at the point of manipulation:
RGB Camera -- Integrated in Dexterous Hand
- On-Hand Vision: Camera positioned at the dexterous hand provides first-person view of the manipulation workspace, enabling precise object identification and positioning.
- Object Recognition: RGB imagery supports real-time object classification, color detection, and feature identification during manipulation tasks.
- Visual Servoing: Close-proximity camera enables visual feedback control loops for precision grasping, alignment, and placement operations.
- Quality Inspection: High-resolution imagery supports in-process quality checks, defect detection, and verification of manipulation outcomes.
- SDK Integration: Full SDK support for camera control, image processing, and integration with arm control systems for coordinated vision-manipulation workflows.
- Reduced External Dependencies: Integrated camera eliminates the need for separate external vision systems in many applications, simplifying setup and reducing cost.
Left/Right Arm Mirror Configuration
The R1-7a Professional E is available in left-arm and right-arm versions, specifically designed for bimanual humanoid robot integration:
Left-Arm & Right-Arm Mirror Versions
- Mirror-Image Design: Left and right arms are precise mirror images of each other, enabling symmetrical bimanual manipulation for humanoid robot applications.
- Default Right-Arm SKU: For single-arm applications, the default configuration is the right-arm SKU. Specify left-arm when required for your application.
- Bimanual Integration: Designed for seamless integration with the Unitree R1 humanoid robot platform, supporting coordinated dual-arm manipulation tasks.
- Selection Guidance: When left/right distinction is required, select per actual needs. Both versions share identical technical specifications and performance characteristics.
Control System & Interfaces
The R1-7a Professional E provides comprehensive real-time control and flexible integration options for humanoid robot applications:
Arm Communication Protocol
High-speed 485 communication interface for the arm. Robust, noise-resistant protocol suitable for humanoid robot integration and industrial environments.
Total DOF
13 DOF (7 arm joints + 6 dexterous hand DOF across 11 joints). Coordinated control of arm and hand through unified communication interfaces.
Control Methods
SDK and host computer control for seamless integration with humanoid robot control systems and research platforms.
Operating Temperature
Wide operating range of -4°F to 122°F (-20°C to 50°C). Ensures reliable performance in diverse environmental conditions.
What's Included (Per Arm)
Each R1-7a Professional E Robotic Arm package contains the following components:
| Arm | R1-7a Robotic Arm Unit | Complete 7-DOF robotic arm assembly with low-inertia high-speed inner-rotor PMSM motors, dual encoders, and industrial crossed-roller bearings. Specify left or right arm version. |
| Hand | BrainCo Revo 2 Basic Five-Finger Hand with RGB Camera (x1) | Standard equipment -- BrainCo five-finger dexterous hand with 6 DOF, 11 joints, 0.1° repeat control accuracy, 6.3" (160 mm) height, and integrated RGB camera. |
| Accessory Kit | Power & Data Module Kit (x1) | Power and data module accessory kit for integration with humanoid robot systems. Power must be supplied by user via XT30 port. |
| Documentation | Development Documentation | Comprehensive development documentation, SDK reference, API documentation, and ecosystem support materials. |
Important Notes
- Left/Right arm selection: The R1-7a comes in left-arm and right-arm versions (mirror images). For single-arm applications, default is right-arm SKU. Specify left-arm when required.
- BrainCo Revo 2 hand: Five-finger dexterous hand with 6 DOF, 11 joints, 0.1° repeat control accuracy, and 6.3" (160 mm) height from middle fingertip to palm root.
- RGB camera included: The BrainCo Revo 2 Basic hand includes an integrated RGB camera for on-hand visual feedback.
- Power adapter NOT included: Power must be supplied by user via XT30 port (24V-60V). Ensure your power supply can handle the 700W peak load.
- Hand specifications: BrainCo Revo 2 Basic -- 6 DOF, 11 joints, 0.1° repeat control accuracy, 6.3" (160 mm) height.
- Communication interfaces: Arm uses high-speed 485. Ensure compatibility with your humanoid robot communication system.
- Technical support: Excellent technical support and comprehensive development documentation provided. Full ecosystem support for humanoid robot integration.
- 12-month warranty: 12-month warranty on the entire unit. Warranty covers manufacturing defects and normal operational use.
Technical Specifications
| Product Name | R1-7a Professional E Robotic Arm |
| Product Series | Unitree R1 Humanoid Robot Arm |
| Arm Version | Left-arm or Right-arm (mirror images, default right-arm for single-arm applications) |
| Total Degrees of Freedom | 13 (7 arm joints + 6 dexterous hand DOF) |
| Arm Joint Motors | Low-inertia high-speed inner-rotor PMSM; bionic joint motor with high torque and high burst output |
| Max Joint Torque | 44.3 lb·ft (60 N·m) |
| Joint Feedback | Dual encoders |
| Hand Model | BrainCo five-finger dexterous hand Revo 2 Basic (with RGB camera) |
| Hand DOF | 6 |
| Hand Joints | 11 |
| Repeat Control Accuracy | 0.1° |
| Hand Height (middle fingertip to palm root) | 6.3" (160 mm) |
| RGB Camera | Integrated in BrainCo Revo 2 Basic Dexterous Hand |
| Arm Communication Protocol | High-speed 485 |
| Mounting Options | Upright, side, inverted |
| Supply Voltage | 24 V to 60 V DC |
| Power Consumption | Peak power 700 W; typical power ≤ 50 W |
| Operating Temperature | -4°F to 122°F (-20°C to 50°C) |
| Accessory Kit | Power & data module accessory kit x1 included |
| Warranty | 12-month warranty on the entire unit |
* Specifications are based on manufacturer data and may vary slightly by production batch.
* The R1-7a Professional E includes all features of the R1-7a Standard arm plus the BrainCo five-finger dexterous hand Revo 2 Basic (with RGB camera).
* Left/right arm versions available (mirror images). Default is right-arm SKU for single-arm applications.
* RGB camera is integrated in the BrainCo Revo 2 Basic dexterous hand for on-hand visual feedback.
* Power adapter NOT included. Power must be supplied by user via XT30 port (24V-60V). Peak power: 700W.
* Hand specifications: 6 DOF, 11 joints, 0.1° repeat control accuracy, 6.3" (160 mm) height from middle fingertip to palm root.
* Secondary development requires advanced programming skills and familiarity with multi-DOF robotics control.
* Unitree is a registered trademark of Unitree Robotics. BrainCo is a trademark of BrainCo, Inc.
Unitree Robotics -- Official Robotic Arm
Unitree R1-7a Professional E Robotic Arm
Official 13-DOF collaborative robotic arm system designed for the Unitree R1 humanoid robot platform. The R1-7a Professional E includes all features of the R1-7a Standard arm and comes equipped with the BrainCo five-finger dexterous hand Revo 2 Basic (with RGB camera). With 13 total degrees of freedom (7 arm joints + 6 dexterous hand DOF across 11 joints), 0.1° repeat control accuracy, low-inertia high-speed inner-rotor PMSM motors delivering 44.3 lb·ft (60 N·m) max joint torque, and a compact 6.3" (160 mm) hand height, it provides a complete five-finger dexterous manipulation solution with integrated visual feedback. Available in left-arm and right-arm mirror-image versions.
Product Overview
The Unitree R1-7a Professional E Robotic Arm is a complete 13-DOF manipulation system designed for the Unitree R1 humanoid robot platform. Building on the proven R1-7a Standard arm with its 7 degrees of freedom and 44.3 lb·ft (60 N·m) maximum joint torque, the Professional E variant adds the BrainCo five-finger dexterous hand Revo 2 Basic (with RGB camera) as standard equipment, bringing the total system to 13 degrees of freedom (7 arm joints + 6 dexterous hand DOF distributed across 11 joints).
The arm features low-inertia high-speed inner-rotor PMSM bionic joint motors with high torque and high burst output, housed in a lightweight metal body with engineering plastic components. The integrated BrainCo Revo 2 Basic dexterous hand features a five-finger architecture with 6 DOF, 11 joints, 0.1° repeat control accuracy, and a height of 6.3" (160 mm) from middle fingertip to palm root. The hand includes an integrated RGB camera for visual feedback. Each arm joint utilizes dual encoders for precise feedback. Supports flexible mounting (upright, side, inverted) and offers high-speed 485 communication for the arm.
13-DOF Complete System
7 arm joints plus 6 dexterous hand DOF (across 11 joints) deliver a fully integrated five-finger manipulation solution. BrainCo Revo 2 Basic hand with RGB camera included.
BrainCo Revo 2 Five-Finger Hand
Five-finger dexterous hand with 6 DOF, 11 joints, 0.1° repeat control accuracy, and 6.3" (160 mm) height. Human-like dexterity for complex manipulation tasks.
44.3 lb·ft (60 N·m) Torque
7 independent joints driven by low-inertia high-speed inner-rotor PMSM bionic joint motors. High burst output enables robust manipulation and dynamic humanoid tasks.
Dual Encoder Per Joint
Each of the 7 arm motors is equipped with a dual encoder system for redundant, high-resolution position feedback and reliable closed-loop control.
Flexible Mounting
Supports upright, side, and inverted mounting configurations. Adapts to various humanoid robot body configurations and workspace requirements.
High-Speed 485 Communication
High-speed 485 communication protocol for the arm. Robust, noise-resistant protocol suitable for humanoid robot integration and industrial environments.
BrainCo Revo 2 Basic Five-Finger Dexterous Hand
The R1-7a Professional E comes equipped with the BrainCo Revo 2 Basic five-finger dexterous hand, providing advanced human-like manipulation capability with integrated visual feedback:
BrainCo Revo 2 Basic -- Standard Equipment
- Type: Five-finger dexterous hand (with RGB camera).
- DOF: 6 degrees of freedom distributed across the five-finger architecture.
- Joints: 11 joints enabling complex finger articulation and human-like grasping patterns.
- Repeat Control Accuracy: 0.1° -- high-precision repeatability for consistent manipulation performance.
- Height: 6.3" (160 mm) from middle fingertip to palm root -- compact form factor optimized for humanoid integration.
- RGB Camera: Integrated camera for on-hand visual feedback during manipulation tasks.
Five-Finger Architecture
The BrainCo Revo 2 Basic features a five-finger architecture with 6 DOF across 11 joints, enabling human-like dexterity and versatile grasping patterns:
Thumb
Opposable thumb design enables precision pinch grasps, power grasps, and complex in-hand manipulation. Critical for human-like dexterity.
Index Finger
Independent articulation for pointing, trigger-style manipulation, and fine tactile exploration. Supports precision and power grasp modes.
Middle Finger
Central finger provides stability and force distribution during object manipulation. Key contributor to power grasp envelope.
Ring Finger
Supports power grasp completion and lateral stabilization. Works in coordination with pinky for secure wrapping of large objects.
Pinky Finger
Completes the five-finger architecture for adaptive grasping and in-hand manipulation of complex objects. Enhances grasp security.
11 Joints, 6 DOF
11 joints distributed across five fingers with 6 active degrees of freedom. Enables complex finger coordination and human-like manipulation patterns.
Integrated RGB Camera
The BrainCo Revo 2 Basic dexterous hand features an integrated RGB camera, providing critical visual feedback directly at the point of manipulation:
RGB Camera -- Integrated in Dexterous Hand
- On-Hand Vision: Camera positioned at the dexterous hand provides first-person view of the manipulation workspace, enabling precise object identification and positioning.
- Object Recognition: RGB imagery supports real-time object classification, color detection, and feature identification during manipulation tasks.
- Visual Servoing: Close-proximity camera enables visual feedback control loops for precision grasping, alignment, and placement operations.
- Quality Inspection: High-resolution imagery supports in-process quality checks, defect detection, and verification of manipulation outcomes.
- SDK Integration: Full SDK support for camera control, image processing, and integration with arm control systems for coordinated vision-manipulation workflows.
- Reduced External Dependencies: Integrated camera eliminates the need for separate external vision systems in many applications, simplifying setup and reducing cost.
Left/Right Arm Mirror Configuration
The R1-7a Professional E is available in left-arm and right-arm versions, specifically designed for bimanual humanoid robot integration:
Left-Arm & Right-Arm Mirror Versions
- Mirror-Image Design: Left and right arms are precise mirror images of each other, enabling symmetrical bimanual manipulation for humanoid robot applications.
- Default Right-Arm SKU: For single-arm applications, the default configuration is the right-arm SKU. Specify left-arm when required for your application.
- Bimanual Integration: Designed for seamless integration with the Unitree R1 humanoid robot platform, supporting coordinated dual-arm manipulation tasks.
- Selection Guidance: When left/right distinction is required, select per actual needs. Both versions share identical technical specifications and performance characteristics.
Control System & Interfaces
The R1-7a Professional E provides comprehensive real-time control and flexible integration options for humanoid robot applications:
Arm Communication Protocol
High-speed 485 communication interface for the arm. Robust, noise-resistant protocol suitable for humanoid robot integration and industrial environments.
Total DOF
13 DOF (7 arm joints + 6 dexterous hand DOF across 11 joints). Coordinated control of arm and hand through unified communication interfaces.
Control Methods
SDK and host computer control for seamless integration with humanoid robot control systems and research platforms.
Operating Temperature
Wide operating range of -4°F to 122°F (-20°C to 50°C). Ensures reliable performance in diverse environmental conditions.
What's Included (Per Arm)
Each R1-7a Professional E Robotic Arm package contains the following components:
| Arm | R1-7a Robotic Arm Unit | Complete 7-DOF robotic arm assembly with low-inertia high-speed inner-rotor PMSM motors, dual encoders, and industrial crossed-roller bearings. Specify left or right arm version. |
| Hand | BrainCo Revo 2 Basic Five-Finger Hand with RGB Camera (x1) | Standard equipment -- BrainCo five-finger dexterous hand with 6 DOF, 11 joints, 0.1° repeat control accuracy, 6.3" (160 mm) height, and integrated RGB camera. |
| Accessory Kit | Power & Data Module Kit (x1) | Power and data module accessory kit for integration with humanoid robot systems. Power must be supplied by user via XT30 port. |
| Documentation | Development Documentation | Comprehensive development documentation, SDK reference, API documentation, and ecosystem support materials. |
Important Notes
- Left/Right arm selection: The R1-7a comes in left-arm and right-arm versions (mirror images). For single-arm applications, default is right-arm SKU. Specify left-arm when required.
- BrainCo Revo 2 hand: Five-finger dexterous hand with 6 DOF, 11 joints, 0.1° repeat control accuracy, and 6.3" (160 mm) height from middle fingertip to palm root.
- RGB camera included: The BrainCo Revo 2 Basic hand includes an integrated RGB camera for on-hand visual feedback.
- Power adapter NOT included: Power must be supplied by user via XT30 port (24V-60V). Ensure your power supply can handle the 700W peak load.
- Hand specifications: BrainCo Revo 2 Basic -- 6 DOF, 11 joints, 0.1° repeat control accuracy, 6.3" (160 mm) height.
- Communication interfaces: Arm uses high-speed 485. Ensure compatibility with your humanoid robot communication system.
- Technical support: Excellent technical support and comprehensive development documentation provided. Full ecosystem support for humanoid robot integration.
- 12-month warranty: 12-month warranty on the entire unit. Warranty covers manufacturing defects and normal operational use.
Technical Specifications
| Product Name | R1-7a Professional E Robotic Arm |
| Product Series | Unitree R1 Humanoid Robot Arm |
| Arm Version | Left-arm or Right-arm (mirror images, default right-arm for single-arm applications) |
| Total Degrees of Freedom | 13 (7 arm joints + 6 dexterous hand DOF) |
| Arm Joint Motors | Low-inertia high-speed inner-rotor PMSM; bionic joint motor with high torque and high burst output |
| Max Joint Torque | 44.3 lb·ft (60 N·m) |
| Joint Feedback | Dual encoders |
| Hand Model | BrainCo five-finger dexterous hand Revo 2 Basic (with RGB camera) |
| Hand DOF | 6 |
| Hand Joints | 11 |
| Repeat Control Accuracy | 0.1° |
| Hand Height (middle fingertip to palm root) | 6.3" (160 mm) |
| RGB Camera | Integrated in BrainCo Revo 2 Basic Dexterous Hand |
| Arm Communication Protocol | High-speed 485 |
| Mounting Options | Upright, side, inverted |
| Supply Voltage | 24 V to 60 V DC |
| Power Consumption | Peak power 700 W; typical power ≤ 50 W |
| Operating Temperature | -4°F to 122°F (-20°C to 50°C) |
| Accessory Kit | Power & data module accessory kit x1 included |
| Warranty | 12-month warranty on the entire unit |
* Specifications are based on manufacturer data and may vary slightly by production batch.
* The R1-7a Professional E includes all features of the R1-7a Standard arm plus the BrainCo five-finger dexterous hand Revo 2 Basic (with RGB camera).
* Left/right arm versions available (mirror images). Default is right-arm SKU for single-arm applications.
* RGB camera is integrated in the BrainCo Revo 2 Basic dexterous hand for on-hand visual feedback.
* Power adapter NOT included. Power must be supplied by user via XT30 port (24V-60V). Peak power: 700W.
* Hand specifications: 6 DOF, 11 joints, 0.1° repeat control accuracy, 6.3" (160 mm) height from middle fingertip to palm root.
* Secondary development requires advanced programming skills and familiarity with multi-DOF robotics control.
* Unitree is a registered trademark of Unitree Robotics. BrainCo is a trademark of BrainCo, Inc.
Unitree R1-7a Professional E Robotic Arm
- Regular price
- $8,939.00
- Sale price
- $8,939.00
- Regular price
-

