About
Description
Unitree Robotics -- Official Robotic Arm
Unitree R1-7a Standard Robotic Arm
R1 Series 7 DOF 44.3 lb·ft (60 N·m) Left/Right Versions
Official 7-DOF collaborative robotic arm designed for the Unitree R1 humanoid robot platform. The R1-7a Standard features 7 degrees of freedom driven by low-inertia, high-speed inner-rotor PMSM bionic joint motors with high torque and high burst output, delivering a maximum joint torque of 44.3 lb·ft (60 N·m). Housed in a lightweight 12.1 lb (5.5 kg) metal body with engineering plastic components, it supports a 4.4 lb (2 kg) rated payload (up to 8.8 lb (4 kg) maximum load) and features industrial crossed-roller bearings. Each joint utilizes dual encoders for precise feedback. Supports flexible mounting (upright, side, inverted) and offers CAN/485 communication. Available in left-arm and right-arm mirror-image versions.
7
Active DOF
44.3 lb·ft
Max Torque
4.4 lb
Rated Payload
12.1 lb
Weight
18.5"
Arm Length
12 mo
Warranty
R1 Series Arm: The R1-7a Standard is specifically designed for the Unitree R1 humanoid robot platform. Features low-inertia, high-speed inner-rotor PMSM bionic joint motors optimized for dynamic humanoid applications. Available in left-arm and right-arm mirror-image configurations.
Left/Right Arm Selection: The R1-7a Robotic Arm comes in left-arm and right-arm versions. For single-arm applications, the default is the right-arm SKU. When left/right distinction is required, select per actual needs -- left and right arms are mirror images of each other.
Product Overview
The Unitree R1-7a Standard Robotic Arm is a high-performance 7-DOF collaborative robotic arm specifically designed for the Unitree R1 humanoid robot platform. With 7 degrees of freedom and a maximum joint torque of 44.3 lb·ft (60 N·m), the R1-7a achieves human-like dexterity and robust load handling. Constructed with a metal body and engineering plastic components, it features industrial crossed-roller bearings and low-inertia, high-speed inner-rotor PMSM bionic joint motors with high torque and high burst output, ensuring high precision, fast response, and excellent heat dissipation in a lightweight 12.1 lb (5.5 kg) package.
The R1-7a features an extended arm length of 18.5" (470 mm) with a working radius of 25.6" (650 mm) when equipped with a dexterous hand. The unique 180° elbow fold design enables compact storage and flexible workspace configuration. Each joint utilizes dual encoders for precise position feedback. Integrated with CAN/485 communication and SDK/host computer control, it supports flexible mounting in upright, side, or inverted orientations. Operating temperature range of -4°F to 122°F (-20°C to 50°C) ensures reliable performance in diverse environments.
7 DOF & 44.3 lb·ft (60 N·m) Torque
7 independent joints driven by low-inertia, high-speed inner-rotor PMSM bionic joint motors. Maximum joint torque of 44.3 lb·ft (60 N·m) with high burst output enables robust manipulation and dynamic humanoid tasks.
Dual Encoder Per Joint
Each of the 7 motors is equipped with a dual encoder system for redundant, high-resolution position feedback. Ensures precise trajectory tracking and reliable closed-loop control.
18.5" Arm Length, 25.6" Working Radius
Extended arm length of 18.5" (470 mm) with working radius of 25.6" (650 mm) when equipped with a dexterous hand. Enables wide workspace coverage for humanoid manipulation tasks.
180° Elbow Fold
Unique elbow design folds 180°, enabling compact storage and flexible workspace configuration. Ideal for humanoid robot integration and space-constrained environments.
Flexible Mounting
Supports upright, side, and inverted mounting configurations. Adapts to various humanoid robot body configurations and workspace requirements.
CAN/485 Communication
CAN/485 communication interface with SDK/host computer control. Robust, noise-resistant communication suitable for humanoid robot integration and industrial applications.
Left/Right Arm Mirror Configuration
The R1-7a Robotic Arm 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.
Ultra-Wide Joint Motion Range
The R1-7a Arm distributes 7 degrees of freedom across its joints with an ultra-wide motion range optimized for humanoid robot manipulation:
- J1 Joint: -156° to 156° | Peak torque 44.3 lb·ft (60 N·m). Provides the primary base rotation for wide workspace coverage.
- J2 Joint: 0° to 180° | Peak torque 44.3 lb·ft (60 N·m). Delivers powerful shoulder movement for heavy lifting and positioning.
- J3 Joint: -20° to 200° | Peak torque 44.3 lb·ft (60 N·m). Ultra-wide range enables deep reach and complex spatial positioning.
- J4 Joint: 0° to 180° | Peak torque 44.3 lb·ft (60 N·m). High-speed rotation for rapid orientation changes.
- J5 Joint: -130° to 130° | Peak torque 44.3 lb·ft (60 N·m). Provides precise pitch control for end-effector alignment.
- J6 Joint: -30° to 30° | Peak torque 44.3 lb·ft (60 N·m). Fine-tuned roll adjustment for delicate manipulation tasks.
- J7 Joint: -90° to 90° | Peak torque 44.3 lb·ft (60 N·m). Final joint orientation for exact tool or gripper positioning.
Motor & Bearing Technology
The R1-7a features advanced motor and bearing technology optimized for humanoid robot applications:
Low-Inertia High-Speed Inner-Rotor PMSM
- Bionic Joint Motor Design: Low-inertia high-speed inner-rotor PMSM (Permanent Magnet Synchronous Motor) with high torque and high burst output. Optimized for dynamic humanoid manipulation tasks.
- Better Response & Heat Dissipation: Inner-rotor design provides superior thermal management and faster response times compared to outer-rotor configurations.
- Industrial Crossed-Roller Bearings: High precision, high load capacity bearings at each joint. Ensures long service life and reliable operation under demanding conditions.
- Dual Encoder Feedback: Each joint features dual encoders for redundant position sensing, improving accuracy and enabling fault tolerance.
Control System & Interfaces
The R1-7a Arm provides comprehensive real-time control and flexible integration options for humanoid robot applications:
Control Methods
Supports SDK and host computer control for seamless integration with humanoid robot control systems and research platforms.
Communication Protocol
CAN/485 communication interface. Robust, noise-resistant protocol suitable for humanoid robot integration and industrial environments.
External Interfaces
XT30 power port x1 and CAN/485 x1 (CAN port requires an adapter board). Provides versatile connectivity for power and data integration.
Operating Temperature
Wide operating range of -4°F to 122°F (-20°C to 50°C). Ensures reliable performance in diverse environmental conditions.
Power & Consumption
The R1-7a Arm offers efficient power management optimized for humanoid robot integration:
Supply Voltage
Wide operating range of 24 V to 60 V DC. Ensures compatibility with standard humanoid robot power buses and mobile platforms.
Power Consumption
Peak power 700 W; typical power ≤ 50 W. Highly efficient power management for extended humanoid robot operation.
External Power Supply
External power supply required. Power must be supplied by user via XT30 port. Power adapter NOT included.
Power & Data Module Kit
Comes with power & data module accessory kit x1 for immediate integration with humanoid robot power and communication systems.
What's Included (Per Arm)
Each R1-7a Standard 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. |
| Accessory Kit | Power & Data Module Kit (x1) | Power and data module accessory kit for integration with humanoid robot systems. Power must be supplied by the user via the 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, the default is the right-arm SKU. Specify left-arm when required.
- Power adapter NOT included: Power must be supplied by the user via the XT30 port (24V-60V). Ensure your power supply can handle the 700W peak load.
- CAN port adapter board: CAN/485 communication requires an adapter board for the CAN port. Ensure compatibility with your humanoid robot communication system.
- Rated vs. Maximum Payload: Rated payload is 4.4 lb (2 kg); maximum payload is approx. 8.8 lb (4 kg). Ensure operational loads do not exceed maximum limits to maintain precision and warranty.
- Operating temperature: -4°F to 122°F (-20°C to 50°C). Ensure environmental conditions are within the specified range for reliable operation.
- Technical support: Excellent technical support and comprehensive development documentation provided. Full ecosystem support for humanoid robot integration.
- Secondary development: Requires advanced programming knowledge and familiarity with robotics control concepts, CAN/485 communication protocols, and multi-DOF kinematics.
- 12-month warranty: 12-month warranty on the entire unit. Warranty covers manufacturing defects and normal operational use.
Technical Specifications
| Product Name | R1-7a Standard 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) |
| Net Weight | 12.1 lb (5.5 kg) |
| Material | Metal body + engineering plastic |
| Extended Arm Length | 18.5" (470 mm) |
| Working Radius (with dexterous hand) | 25.6" (650 mm) |
| Total Degrees of Freedom | 7 (joint motors) |
| Joint Output Bearing | Industrial crossed-roller bearing (high precision, high load capacity) |
| Joint Motor | 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 |
| Rated Payload | 4.4 lb (2 kg) |
| Max Payload | 8.8 lb (4 kg) |
| Elbow Fold | 180° |
| Mounting Options | Upright, side, inverted |
| Supply Voltage | 24 V to 60 V DC |
| Power Consumption | Peak power 700 W; typical power ≤ 50 W |
| Power Supply | External (power adapter NOT included) |
| Communication | CAN/485 |
| External Interfaces | XT30 power port x1; CAN/485 x1 (CAN port requires adapter board) |
| Control Methods | SDK / host computer |
| Operating Temperature | -4°F to 122°F (-20°C to 50°C) |
| Accessory Kit | Power & data module accessory kit x1 included |
| Technical Support | Excellent technical support; comprehensive development documentation and ecosystem support |
| Warranty | 12-month warranty on the entire unit |
* Specifications are based on manufacturer data and may vary slightly by production batch.
* The R1-7a comes in left-arm and right-arm versions (mirror images). The default is the right-arm SKU for single-arm applications.
* Power adapter NOT included. Power must be supplied by user via XT30 port (24V-60V). Peak power: 700W. Ensure adequate power supply capacity.
* CAN port requires an adapter board for CAN/485 communication.
* Rated payload: 4.4 lb (2 kg). Maximum payload: 8.8 lb (4 kg). Ensure operational loads do not exceed maximum limits.
* Operating temperature: -4°F to 122°F (-20°C to 50°C).
* Comes with power & data module accessory kit x1.
* Secondary development requires advanced programming skills and familiarity with multi-DOF robotics control and CAN/485 communication.
* Unitree is a registered trademark of Unitree Robotics.
Description
Unitree Robotics -- Official Robotic Arm
Unitree R1-7a Standard Robotic Arm
R1 Series 7 DOF 44.3 lb·ft (60 N·m) Left/Right Versions
Official 7-DOF collaborative robotic arm designed for the Unitree R1 humanoid robot platform. The R1-7a Standard features 7 degrees of freedom driven by low-inertia, high-speed inner-rotor PMSM bionic joint motors with high torque and high burst output, delivering a maximum joint torque of 44.3 lb·ft (60 N·m). Housed in a lightweight 12.1 lb (5.5 kg) metal body with engineering plastic components, it supports a 4.4 lb (2 kg) rated payload (up to 8.8 lb (4 kg) maximum load) and features industrial crossed-roller bearings. Each joint utilizes dual encoders for precise feedback. Supports flexible mounting (upright, side, inverted) and offers CAN/485 communication. Available in left-arm and right-arm mirror-image versions.
7
Active DOF
44.3 lb·ft
Max Torque
4.4 lb
Rated Payload
12.1 lb
Weight
18.5"
Arm Length
12 mo
Warranty
R1 Series Arm: The R1-7a Standard is specifically designed for the Unitree R1 humanoid robot platform. Features low-inertia, high-speed inner-rotor PMSM bionic joint motors optimized for dynamic humanoid applications. Available in left-arm and right-arm mirror-image configurations.
Left/Right Arm Selection: The R1-7a Robotic Arm comes in left-arm and right-arm versions. For single-arm applications, the default is the right-arm SKU. When left/right distinction is required, select per actual needs -- left and right arms are mirror images of each other.
Product Overview
The Unitree R1-7a Standard Robotic Arm is a high-performance 7-DOF collaborative robotic arm specifically designed for the Unitree R1 humanoid robot platform. With 7 degrees of freedom and a maximum joint torque of 44.3 lb·ft (60 N·m), the R1-7a achieves human-like dexterity and robust load handling. Constructed with a metal body and engineering plastic components, it features industrial crossed-roller bearings and low-inertia, high-speed inner-rotor PMSM bionic joint motors with high torque and high burst output, ensuring high precision, fast response, and excellent heat dissipation in a lightweight 12.1 lb (5.5 kg) package.
The R1-7a features an extended arm length of 18.5" (470 mm) with a working radius of 25.6" (650 mm) when equipped with a dexterous hand. The unique 180° elbow fold design enables compact storage and flexible workspace configuration. Each joint utilizes dual encoders for precise position feedback. Integrated with CAN/485 communication and SDK/host computer control, it supports flexible mounting in upright, side, or inverted orientations. Operating temperature range of -4°F to 122°F (-20°C to 50°C) ensures reliable performance in diverse environments.
7 DOF & 44.3 lb·ft (60 N·m) Torque
7 independent joints driven by low-inertia, high-speed inner-rotor PMSM bionic joint motors. Maximum joint torque of 44.3 lb·ft (60 N·m) with high burst output enables robust manipulation and dynamic humanoid tasks.
Dual Encoder Per Joint
Each of the 7 motors is equipped with a dual encoder system for redundant, high-resolution position feedback. Ensures precise trajectory tracking and reliable closed-loop control.
18.5" Arm Length, 25.6" Working Radius
Extended arm length of 18.5" (470 mm) with working radius of 25.6" (650 mm) when equipped with a dexterous hand. Enables wide workspace coverage for humanoid manipulation tasks.
180° Elbow Fold
Unique elbow design folds 180°, enabling compact storage and flexible workspace configuration. Ideal for humanoid robot integration and space-constrained environments.
Flexible Mounting
Supports upright, side, and inverted mounting configurations. Adapts to various humanoid robot body configurations and workspace requirements.
CAN/485 Communication
CAN/485 communication interface with SDK/host computer control. Robust, noise-resistant communication suitable for humanoid robot integration and industrial applications.
Left/Right Arm Mirror Configuration
The R1-7a Robotic Arm 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.
Ultra-Wide Joint Motion Range
The R1-7a Arm distributes 7 degrees of freedom across its joints with an ultra-wide motion range optimized for humanoid robot manipulation:
- J1 Joint: -156° to 156° | Peak torque 44.3 lb·ft (60 N·m). Provides the primary base rotation for wide workspace coverage.
- J2 Joint: 0° to 180° | Peak torque 44.3 lb·ft (60 N·m). Delivers powerful shoulder movement for heavy lifting and positioning.
- J3 Joint: -20° to 200° | Peak torque 44.3 lb·ft (60 N·m). Ultra-wide range enables deep reach and complex spatial positioning.
- J4 Joint: 0° to 180° | Peak torque 44.3 lb·ft (60 N·m). High-speed rotation for rapid orientation changes.
- J5 Joint: -130° to 130° | Peak torque 44.3 lb·ft (60 N·m). Provides precise pitch control for end-effector alignment.
- J6 Joint: -30° to 30° | Peak torque 44.3 lb·ft (60 N·m). Fine-tuned roll adjustment for delicate manipulation tasks.
- J7 Joint: -90° to 90° | Peak torque 44.3 lb·ft (60 N·m). Final joint orientation for exact tool or gripper positioning.
Motor & Bearing Technology
The R1-7a features advanced motor and bearing technology optimized for humanoid robot applications:
Low-Inertia High-Speed Inner-Rotor PMSM
- Bionic Joint Motor Design: Low-inertia high-speed inner-rotor PMSM (Permanent Magnet Synchronous Motor) with high torque and high burst output. Optimized for dynamic humanoid manipulation tasks.
- Better Response & Heat Dissipation: Inner-rotor design provides superior thermal management and faster response times compared to outer-rotor configurations.
- Industrial Crossed-Roller Bearings: High precision, high load capacity bearings at each joint. Ensures long service life and reliable operation under demanding conditions.
- Dual Encoder Feedback: Each joint features dual encoders for redundant position sensing, improving accuracy and enabling fault tolerance.
Control System & Interfaces
The R1-7a Arm provides comprehensive real-time control and flexible integration options for humanoid robot applications:
Control Methods
Supports SDK and host computer control for seamless integration with humanoid robot control systems and research platforms.
Communication Protocol
CAN/485 communication interface. Robust, noise-resistant protocol suitable for humanoid robot integration and industrial environments.
External Interfaces
XT30 power port x1 and CAN/485 x1 (CAN port requires an adapter board). Provides versatile connectivity for power and data integration.
Operating Temperature
Wide operating range of -4°F to 122°F (-20°C to 50°C). Ensures reliable performance in diverse environmental conditions.
Power & Consumption
The R1-7a Arm offers efficient power management optimized for humanoid robot integration:
Supply Voltage
Wide operating range of 24 V to 60 V DC. Ensures compatibility with standard humanoid robot power buses and mobile platforms.
Power Consumption
Peak power 700 W; typical power ≤ 50 W. Highly efficient power management for extended humanoid robot operation.
External Power Supply
External power supply required. Power must be supplied by user via XT30 port. Power adapter NOT included.
Power & Data Module Kit
Comes with power & data module accessory kit x1 for immediate integration with humanoid robot power and communication systems.
What's Included (Per Arm)
Each R1-7a Standard 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. |
| Accessory Kit | Power & Data Module Kit (x1) | Power and data module accessory kit for integration with humanoid robot systems. Power must be supplied by the user via the 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, the default is the right-arm SKU. Specify left-arm when required.
- Power adapter NOT included: Power must be supplied by the user via the XT30 port (24V-60V). Ensure your power supply can handle the 700W peak load.
- CAN port adapter board: CAN/485 communication requires an adapter board for the CAN port. Ensure compatibility with your humanoid robot communication system.
- Rated vs. Maximum Payload: Rated payload is 4.4 lb (2 kg); maximum payload is approx. 8.8 lb (4 kg). Ensure operational loads do not exceed maximum limits to maintain precision and warranty.
- Operating temperature: -4°F to 122°F (-20°C to 50°C). Ensure environmental conditions are within the specified range for reliable operation.
- Technical support: Excellent technical support and comprehensive development documentation provided. Full ecosystem support for humanoid robot integration.
- Secondary development: Requires advanced programming knowledge and familiarity with robotics control concepts, CAN/485 communication protocols, and multi-DOF kinematics.
- 12-month warranty: 12-month warranty on the entire unit. Warranty covers manufacturing defects and normal operational use.
Technical Specifications
| Product Name | R1-7a Standard 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) |
| Net Weight | 12.1 lb (5.5 kg) |
| Material | Metal body + engineering plastic |
| Extended Arm Length | 18.5" (470 mm) |
| Working Radius (with dexterous hand) | 25.6" (650 mm) |
| Total Degrees of Freedom | 7 (joint motors) |
| Joint Output Bearing | Industrial crossed-roller bearing (high precision, high load capacity) |
| Joint Motor | 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 |
| Rated Payload | 4.4 lb (2 kg) |
| Max Payload | 8.8 lb (4 kg) |
| Elbow Fold | 180° |
| Mounting Options | Upright, side, inverted |
| Supply Voltage | 24 V to 60 V DC |
| Power Consumption | Peak power 700 W; typical power ≤ 50 W |
| Power Supply | External (power adapter NOT included) |
| Communication | CAN/485 |
| External Interfaces | XT30 power port x1; CAN/485 x1 (CAN port requires adapter board) |
| Control Methods | SDK / host computer |
| Operating Temperature | -4°F to 122°F (-20°C to 50°C) |
| Accessory Kit | Power & data module accessory kit x1 included |
| Technical Support | Excellent technical support; comprehensive development documentation and ecosystem support |
| Warranty | 12-month warranty on the entire unit |
* Specifications are based on manufacturer data and may vary slightly by production batch.
* The R1-7a comes in left-arm and right-arm versions (mirror images). The default is the right-arm SKU for single-arm applications.
* Power adapter NOT included. Power must be supplied by user via XT30 port (24V-60V). Peak power: 700W. Ensure adequate power supply capacity.
* CAN port requires an adapter board for CAN/485 communication.
* Rated payload: 4.4 lb (2 kg). Maximum payload: 8.8 lb (4 kg). Ensure operational loads do not exceed maximum limits.
* Operating temperature: -4°F to 122°F (-20°C to 50°C).
* Comes with power & data module accessory kit x1.
* Secondary development requires advanced programming skills and familiarity with multi-DOF robotics control and CAN/485 communication.
* Unitree is a registered trademark of Unitree Robotics.
Unitree
by
Unitree
Unitree R1-7a Standard Robotic Arm
SKU:
R1-7A-STANDARD-ARM
- Regular price
- $2,259.00
- Sale price
- $2,259.00
- Regular price
-
Shipping calculated at checkout.
Providing the best new Tech Experience, Energy Independence and Robotics Ways of Optimisation
Providing the best new Tech Experience, Energy Independence and Robotics Ways of Optimisation
Packaging note:
Equipment is being supplied in a manufacturer packaging
