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Description
Unitree R1-7a Professional A Robotic Arm

Unitree Robotics -- Official Robotic Arm

Unitree R1-7a Professional A Robotic Arm

R1 Series Professional A 8 DOF (7+1) Left/Right Versions

Official 8-DOF collaborative robotic arm system designed for the Unitree R1 humanoid robot platform. The R1-7a Professional A includes all features of the R1-7a Standard arm and comes equipped with the Dex1-1 Standard Gripper. With 8 total degrees of freedom (7 arm joints + 1 gripper), low-inertia high-speed inner-rotor PMSM motors delivering 44.3 lb·ft (60 N·m) max joint torque, and a gripper capable of 44.1 lb (20 kg) conforming grasping load, it provides a complete manipulation solution. Available in left-arm and right-arm mirror-image versions.

8
Total DOF
44.3 lb·ft
Max Arm Torque
44.1 lb
Grip Load
1.21 lb
Gripper Weight
3.54"
Gripper Stroke
12 mo
Warranty
Professional A vs. Standard: The R1-7a Professional A includes all features of the R1-7a Standard arm and comes pre-equipped with the Dex1-1 Standard Gripper (x1), bringing the total system to 8 DOF. Ready for immediate manipulation tasks without separate gripper purchase.
No RGB Camera Included: This model does not include an RGB camera. Visual perception must be implemented through external sensors or the humanoid robot's existing vision system.

Product Overview

The Unitree R1-7a Professional A Robotic Arm is a complete 8-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 A variant adds the Dex1-1 Standard Gripper as standard equipment, bringing the total system to 8 degrees of freedom (7 arm joints + 1 gripper DOF).

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 Dex1-1 gripper offers a 3.54" (90 mm) stroke, 1.1~27 lbf (5~120 N) adjustable grip force, and supports up to 44.1 lb (20 kg) conforming grasping load. Each joint utilizes dual encoders for precise feedback. Supports flexible mounting (upright, side, inverted) and offers high-speed 485 communication.

8-DOF Complete System

7 arm joints plus 1 gripper DOF deliver a fully integrated manipulation solution. Dex1-1 Standard Gripper included -- ready to deploy out of the box.

Dex1-1 Standard Gripper

Equipped with Dex1-1 gripper featuring 3.54" stroke, 1.1~27 lbf adjustable force, and 44.1 lb conforming load capacity. 0.24s fastest full-stroke closing time.

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 reliable, low-latency data exchange with humanoid robot control systems.

Dex1-1 Standard Gripper Specifications

The R1-7a Professional A comes equipped with the Dex1-1 Standard Gripper, providing precise and powerful manipulation capability:

Dex1-1 Standard Gripper -- Standard Equipment

  • Dimensions: 5.6" x 3.1" x 2.6" (143 x 78 x 67 mm) -- compact form factor optimized for humanoid integration.
  • Weight: 1.21 lb (550 g) -- lightweight design minimizes arm payload requirements.
  • Stroke: 3.54" (90 mm) -- wide opening range accommodates various object sizes.
  • Position Resolution: 0.1 mm at fingertip -- high-precision positioning for delicate manipulation tasks.
  • Grip Force: 1.1~27 lbf (5~120 N) adjustable -- programmable force control for handling fragile to heavy objects.
  • Conforming Grasping Load: 44.1 lb (20 kg) -- secure hold on conforming objects through distributed contact.
  • Friction Grasping Load: 11.0 lb (5 kg) -- reliable pinch grip for smooth or rigid objects.
  • Fastest Closing Time: 0.24 seconds full-stroke -- rapid response for dynamic manipulation tasks.
  • Jaw Length: 3.15" (80 mm) -- extended reach for deep grasping applications.

Left/Right Arm Mirror Configuration

The R1-7a Professional A 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 A provides comprehensive real-time control and flexible integration options for humanoid robot applications:

Communication Protocol

High-speed 485 communication interface. Robust, noise-resistant protocol suitable for humanoid robot integration and industrial environments.

Total DOF

8 DOF (7 arm joints + 1 gripper). Coordinated control of arm and gripper through unified communication interface.

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 A 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.
Gripper Dex1-1 Standard Gripper (x1) Standard equipment -- Dex1-1 gripper with 3.54" stroke, 1.1~27 lbf adjustable force, and 44.1 lb conforming load capacity.
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.
  • No RGB camera: This model does not include an RGB camera. Visual perception must be implemented through external sensors or the humanoid robot's existing vision system.
  • 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.
  • Gripper specifications: Dex1-1 gripper dimensions: 5.6" x 3.1" x 2.6" (143 x 78 x 67 mm). Weight: 1.21 lb (550 g). Stroke: 3.54" (90 mm).
  • Grasping loads: Conforming grasping load: 44.1 lb (20 kg). Friction grasping load: 11.0 lb (5 kg). Ensure operational loads do not exceed these limits.
  • Grip force: Adjustable from 1.1 to 27 lbf (5~120 N). Program according to object fragility and material properties.
  • 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 A 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 8 (7 arm joints + 1 gripper)
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
Gripper Model Dex1-1 Standard Gripper (included)
Gripper Dimensions 5.6" x 3.1" x 2.6" (143 x 78 x 67 mm)
Gripper Weight 1.21 lb (550 g)
Gripper Stroke 3.54" (90 mm)
Position Resolution (fingertip) 0.1 mm
Grip Force 1.1~27 lbf (5~120 N) adjustable
Grasping Load (conforming) 44.1 lb (20 kg)
Grasping Load (friction) 11.0 lb (5 kg)
Shortest Full-Stroke Closing Time 0.24 s
Jaw Length 3.15" (80 mm)
Communication Protocol High-speed 485
RGB Camera Not included
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 A includes all features of the R1-7a Standard arm plus the Dex1-1 Standard Gripper.

* Left/right arm versions available (mirror images). Default is right-arm SKU for single-arm applications.

* No RGB camera included. Visual perception must be implemented through external sensors.

* Power adapter NOT included. Power must be supplied by user via XT30 port (24V-60V). Peak power: 700W.

* Gripper conforming load: 44.1 lb (20 kg). Friction load: 11.0 lb (5 kg). Grip force: 1.1~27 lbf (5~120 N) adjustable.

* Secondary development requires advanced programming skills and familiarity with multi-DOF robotics control.

* Unitree is a registered trademark of Unitree Robotics.

Description
Unitree R1-7a Professional A Robotic Arm

Unitree Robotics -- Official Robotic Arm

Unitree R1-7a Professional A Robotic Arm

R1 Series Professional A 8 DOF (7+1) Left/Right Versions

Official 8-DOF collaborative robotic arm system designed for the Unitree R1 humanoid robot platform. The R1-7a Professional A includes all features of the R1-7a Standard arm and comes equipped with the Dex1-1 Standard Gripper. With 8 total degrees of freedom (7 arm joints + 1 gripper), low-inertia high-speed inner-rotor PMSM motors delivering 44.3 lb·ft (60 N·m) max joint torque, and a gripper capable of 44.1 lb (20 kg) conforming grasping load, it provides a complete manipulation solution. Available in left-arm and right-arm mirror-image versions.

8
Total DOF
44.3 lb·ft
Max Arm Torque
44.1 lb
Grip Load
1.21 lb
Gripper Weight
3.54"
Gripper Stroke
12 mo
Warranty
Professional A vs. Standard: The R1-7a Professional A includes all features of the R1-7a Standard arm and comes pre-equipped with the Dex1-1 Standard Gripper (x1), bringing the total system to 8 DOF. Ready for immediate manipulation tasks without separate gripper purchase.
No RGB Camera Included: This model does not include an RGB camera. Visual perception must be implemented through external sensors or the humanoid robot's existing vision system.

Product Overview

The Unitree R1-7a Professional A Robotic Arm is a complete 8-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 A variant adds the Dex1-1 Standard Gripper as standard equipment, bringing the total system to 8 degrees of freedom (7 arm joints + 1 gripper DOF).

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 Dex1-1 gripper offers a 3.54" (90 mm) stroke, 1.1~27 lbf (5~120 N) adjustable grip force, and supports up to 44.1 lb (20 kg) conforming grasping load. Each joint utilizes dual encoders for precise feedback. Supports flexible mounting (upright, side, inverted) and offers high-speed 485 communication.

8-DOF Complete System

7 arm joints plus 1 gripper DOF deliver a fully integrated manipulation solution. Dex1-1 Standard Gripper included -- ready to deploy out of the box.

Dex1-1 Standard Gripper

Equipped with Dex1-1 gripper featuring 3.54" stroke, 1.1~27 lbf adjustable force, and 44.1 lb conforming load capacity. 0.24s fastest full-stroke closing time.

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 reliable, low-latency data exchange with humanoid robot control systems.

Dex1-1 Standard Gripper Specifications

The R1-7a Professional A comes equipped with the Dex1-1 Standard Gripper, providing precise and powerful manipulation capability:

Dex1-1 Standard Gripper -- Standard Equipment

  • Dimensions: 5.6" x 3.1" x 2.6" (143 x 78 x 67 mm) -- compact form factor optimized for humanoid integration.
  • Weight: 1.21 lb (550 g) -- lightweight design minimizes arm payload requirements.
  • Stroke: 3.54" (90 mm) -- wide opening range accommodates various object sizes.
  • Position Resolution: 0.1 mm at fingertip -- high-precision positioning for delicate manipulation tasks.
  • Grip Force: 1.1~27 lbf (5~120 N) adjustable -- programmable force control for handling fragile to heavy objects.
  • Conforming Grasping Load: 44.1 lb (20 kg) -- secure hold on conforming objects through distributed contact.
  • Friction Grasping Load: 11.0 lb (5 kg) -- reliable pinch grip for smooth or rigid objects.
  • Fastest Closing Time: 0.24 seconds full-stroke -- rapid response for dynamic manipulation tasks.
  • Jaw Length: 3.15" (80 mm) -- extended reach for deep grasping applications.

Left/Right Arm Mirror Configuration

The R1-7a Professional A 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 A provides comprehensive real-time control and flexible integration options for humanoid robot applications:

Communication Protocol

High-speed 485 communication interface. Robust, noise-resistant protocol suitable for humanoid robot integration and industrial environments.

Total DOF

8 DOF (7 arm joints + 1 gripper). Coordinated control of arm and gripper through unified communication interface.

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 A 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.
Gripper Dex1-1 Standard Gripper (x1) Standard equipment -- Dex1-1 gripper with 3.54" stroke, 1.1~27 lbf adjustable force, and 44.1 lb conforming load capacity.
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.
  • No RGB camera: This model does not include an RGB camera. Visual perception must be implemented through external sensors or the humanoid robot's existing vision system.
  • 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.
  • Gripper specifications: Dex1-1 gripper dimensions: 5.6" x 3.1" x 2.6" (143 x 78 x 67 mm). Weight: 1.21 lb (550 g). Stroke: 3.54" (90 mm).
  • Grasping loads: Conforming grasping load: 44.1 lb (20 kg). Friction grasping load: 11.0 lb (5 kg). Ensure operational loads do not exceed these limits.
  • Grip force: Adjustable from 1.1 to 27 lbf (5~120 N). Program according to object fragility and material properties.
  • 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 A 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 8 (7 arm joints + 1 gripper)
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
Gripper Model Dex1-1 Standard Gripper (included)
Gripper Dimensions 5.6" x 3.1" x 2.6" (143 x 78 x 67 mm)
Gripper Weight 1.21 lb (550 g)
Gripper Stroke 3.54" (90 mm)
Position Resolution (fingertip) 0.1 mm
Grip Force 1.1~27 lbf (5~120 N) adjustable
Grasping Load (conforming) 44.1 lb (20 kg)
Grasping Load (friction) 11.0 lb (5 kg)
Shortest Full-Stroke Closing Time 0.24 s
Jaw Length 3.15" (80 mm)
Communication Protocol High-speed 485
RGB Camera Not included
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 A includes all features of the R1-7a Standard arm plus the Dex1-1 Standard Gripper.

* Left/right arm versions available (mirror images). Default is right-arm SKU for single-arm applications.

* No RGB camera included. Visual perception must be implemented through external sensors.

* Power adapter NOT included. Power must be supplied by user via XT30 port (24V-60V). Peak power: 700W.

* Gripper conforming load: 44.1 lb (20 kg). Friction load: 11.0 lb (5 kg). Grip force: 1.1~27 lbf (5~120 N) adjustable.

* Secondary development requires advanced programming skills and familiarity with multi-DOF robotics control.

* Unitree is a registered trademark of Unitree Robotics.

Unitree by Unitree

Unitree R1-7a Professional A Robotic Arm

SKU: R1-7A-PROFESSIONAL-A-ARM
$2,639.00
$2,639.00
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

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