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Description

Unitree Robotics -- Official Robotic Arm

Unitree R1-7a Professional C Robotic Arm

R1 Series Professional C 14 DOF (7+7) RGB Camera Included Left/Right Versions

Official 14-DOF collaborative robotic arm system designed for the Unitree R1 humanoid robot platform. The R1-7a Professional C includes all features of the R1-7a Standard arm and comes equipped with the Dex3-1 force-controlled three-finger dexterous hand (non-tactile, with RGB camera). With 14 total degrees of freedom (7 arm joints + 7 dexterous hand DOF), low-inertia high-speed inner-rotor PMSM motors delivering 44.3 lb·ft (60 N·m) max joint torque, and a lightweight 1.43 lb (650 g) dexterous hand, it provides a complete high-dexterity manipulation solution. Available in left-arm and right-arm mirror-image versions.

14
Total DOF
44.3 lb·ft
Max Arm Torque
1.43 lb
Hand Weight
6.9"
Hand Length
USB
Hand Interface
12 mo
Warranty
Professional C vs. Professional A/B: The R1-7a Professional C features the Dex3-1 force-controlled three-finger dexterous hand (non-tactile, with RGB camera), bringing the total system to 14 DOF (7 arm + 7 hand). Unlike the two-finger grippers in Professional A/B, the Dex3-1 offers three-finger dexterous manipulation with force control and integrated RGB vision.

Product Overview

The Unitree R1-7a Professional C Robotic Arm is a complete 14-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 C variant adds the Dex3-1 force-controlled three-finger dexterous hand as standard equipment, bringing the total system to 14 degrees of freedom (7 arm joints + 7 dexterous hand 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 Dex3-1 dexterous hand weighs just 1.43 lb (650 g) with dimensions of 6.9" x 3.5" x 3.0" (175 x 88 x 77 mm), features 7 DOF (thumb 3, index finger 2, middle finger 2), operates on 12~58V, and 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 and USB for the hand.

14-DOF Complete System

7 arm joints plus 7 dexterous hand DOF deliver a fully integrated high-dexterity manipulation solution. Dex3-1 three-finger hand with RGB camera included.

Dex3-1 Three-Finger Dexterous Hand

Force-controlled three-finger hand (non-tactile) with thumb 3 DOF, index 2 DOF, middle 2 DOF. 1.43 lb (650 g) weight, 12~58V operating voltage, USB interface.

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.

Dual Communication Interfaces

High-speed 485 for arm control and USB for dexterous hand communication. Enables coordinated control of arm and hand through unified system integration.

Dex3-1 Force-Controlled Three-Finger Dexterous Hand

The R1-7a Professional C comes equipped with the Dex3-1 force-controlled three-finger dexterous hand, providing advanced manipulation capability with integrated visual feedback:

Dex3-1 Dexterous Hand -- Standard Equipment

  • Type: Force-controlled three-finger dexterous hand (non-tactile).
  • Weight: 1.43 lb (650 g) -- lightweight design minimizes arm payload requirements.
  • Dimensions: 6.9" x 3.5" x 3.0" (175 x 88 x 77 mm) -- compact form factor optimized for humanoid integration.
  • DOF per Hand: 7 total (thumb 3 DOF, index finger 2 DOF, middle finger 2 DOF).
  • Operating Voltage: 12~58V DC -- wide voltage range compatible with humanoid robot power systems.
  • Quiescent Current: 58V @ 0.2A -- low standby power consumption for efficient operation.
  • Communication Interface: USB -- standard interface for easy integration with host computers and robot control systems.

Integrated RGB Camera

The Dex3-1 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 C 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 C 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.

Hand Communication Interface

USB interface for the Dex3-1 dexterous hand. Standard interface for easy integration with host computers and robot control systems.

Total DOF

14 DOF (7 arm joints + 7 dexterous hand). 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.

What's Included (Per Arm)

Each R1-7a Professional C 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 Dex3-1 Dexterous Hand with RGB Camera (x1) Standard equipment -- Dex3-1 force-controlled three-finger dexterous hand (non-tactile) with 7 DOF, 1.43 lb (650 g) weight, 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.
  • Dex3-1 hand type: Force-controlled three-finger dexterous hand (non-tactile). Does not include tactile sensing. Force estimation through motor current feedback.
  • RGB camera included: The Dex3-1 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: Dex3-1 dimensions: 6.9" x 3.5" x 3.0" (175 x 88 x 77 mm). Weight: 1.43 lb (650 g). DOF: 7 (thumb 3, index 2, middle 2).
  • Hand operating voltage: 12~58V DC. Quiescent current: 58V @ 0.2A.
  • Communication interfaces: Arm uses high-speed 485; hand uses USB. 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 C 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 14 (7 arm joints + 7 dexterous hand)
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 Dex3-1 force-controlled three-finger dexterous hand (non-tactile, with RGB camera)
Hand Weight 1.43 lb (650 g)
Hand Dimensions 6.9" x 3.5" x 3.0" (175 x 88 x 77 mm)
Hand DOF 7 (thumb 3, index finger 2, middle finger 2)
Hand Operating Voltage 12~58V DC
Hand Quiescent Current 58V @ 0.2A
Hand Communication Interface USB
RGB Camera Integrated in Dex3-1 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 C includes all features of the R1-7a Standard arm plus the Dex3-1 force-controlled three-finger dexterous hand (non-tactile, with RGB camera).

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

* RGB camera is integrated into the Dex3-1 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 operating voltage: 12~58V DC. Quiescent current: 58V @ 0.2A. Communication interface: USB.

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

* Unitree is a registered trademark of Unitree Robotics.

Description

Unitree Robotics -- Official Robotic Arm

Unitree R1-7a Professional C Robotic Arm

R1 Series Professional C 14 DOF (7+7) RGB Camera Included Left/Right Versions

Official 14-DOF collaborative robotic arm system designed for the Unitree R1 humanoid robot platform. The R1-7a Professional C includes all features of the R1-7a Standard arm and comes equipped with the Dex3-1 force-controlled three-finger dexterous hand (non-tactile, with RGB camera). With 14 total degrees of freedom (7 arm joints + 7 dexterous hand DOF), low-inertia high-speed inner-rotor PMSM motors delivering 44.3 lb·ft (60 N·m) max joint torque, and a lightweight 1.43 lb (650 g) dexterous hand, it provides a complete high-dexterity manipulation solution. Available in left-arm and right-arm mirror-image versions.

14
Total DOF
44.3 lb·ft
Max Arm Torque
1.43 lb
Hand Weight
6.9"
Hand Length
USB
Hand Interface
12 mo
Warranty
Professional C vs. Professional A/B: The R1-7a Professional C features the Dex3-1 force-controlled three-finger dexterous hand (non-tactile, with RGB camera), bringing the total system to 14 DOF (7 arm + 7 hand). Unlike the two-finger grippers in Professional A/B, the Dex3-1 offers three-finger dexterous manipulation with force control and integrated RGB vision.

Product Overview

The Unitree R1-7a Professional C Robotic Arm is a complete 14-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 C variant adds the Dex3-1 force-controlled three-finger dexterous hand as standard equipment, bringing the total system to 14 degrees of freedom (7 arm joints + 7 dexterous hand 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 Dex3-1 dexterous hand weighs just 1.43 lb (650 g) with dimensions of 6.9" x 3.5" x 3.0" (175 x 88 x 77 mm), features 7 DOF (thumb 3, index finger 2, middle finger 2), operates on 12~58V, and 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 and USB for the hand.

14-DOF Complete System

7 arm joints plus 7 dexterous hand DOF deliver a fully integrated high-dexterity manipulation solution. Dex3-1 three-finger hand with RGB camera included.

Dex3-1 Three-Finger Dexterous Hand

Force-controlled three-finger hand (non-tactile) with thumb 3 DOF, index 2 DOF, middle 2 DOF. 1.43 lb (650 g) weight, 12~58V operating voltage, USB interface.

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.

Dual Communication Interfaces

High-speed 485 for arm control and USB for dexterous hand communication. Enables coordinated control of arm and hand through unified system integration.

Dex3-1 Force-Controlled Three-Finger Dexterous Hand

The R1-7a Professional C comes equipped with the Dex3-1 force-controlled three-finger dexterous hand, providing advanced manipulation capability with integrated visual feedback:

Dex3-1 Dexterous Hand -- Standard Equipment

  • Type: Force-controlled three-finger dexterous hand (non-tactile).
  • Weight: 1.43 lb (650 g) -- lightweight design minimizes arm payload requirements.
  • Dimensions: 6.9" x 3.5" x 3.0" (175 x 88 x 77 mm) -- compact form factor optimized for humanoid integration.
  • DOF per Hand: 7 total (thumb 3 DOF, index finger 2 DOF, middle finger 2 DOF).
  • Operating Voltage: 12~58V DC -- wide voltage range compatible with humanoid robot power systems.
  • Quiescent Current: 58V @ 0.2A -- low standby power consumption for efficient operation.
  • Communication Interface: USB -- standard interface for easy integration with host computers and robot control systems.

Integrated RGB Camera

The Dex3-1 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 C 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 C 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.

Hand Communication Interface

USB interface for the Dex3-1 dexterous hand. Standard interface for easy integration with host computers and robot control systems.

Total DOF

14 DOF (7 arm joints + 7 dexterous hand). 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.

What's Included (Per Arm)

Each R1-7a Professional C 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 Dex3-1 Dexterous Hand with RGB Camera (x1) Standard equipment -- Dex3-1 force-controlled three-finger dexterous hand (non-tactile) with 7 DOF, 1.43 lb (650 g) weight, 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.
  • Dex3-1 hand type: Force-controlled three-finger dexterous hand (non-tactile). Does not include tactile sensing. Force estimation through motor current feedback.
  • RGB camera included: The Dex3-1 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: Dex3-1 dimensions: 6.9" x 3.5" x 3.0" (175 x 88 x 77 mm). Weight: 1.43 lb (650 g). DOF: 7 (thumb 3, index 2, middle 2).
  • Hand operating voltage: 12~58V DC. Quiescent current: 58V @ 0.2A.
  • Communication interfaces: Arm uses high-speed 485; hand uses USB. 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 C 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 14 (7 arm joints + 7 dexterous hand)
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 Dex3-1 force-controlled three-finger dexterous hand (non-tactile, with RGB camera)
Hand Weight 1.43 lb (650 g)
Hand Dimensions 6.9" x 3.5" x 3.0" (175 x 88 x 77 mm)
Hand DOF 7 (thumb 3, index finger 2, middle finger 2)
Hand Operating Voltage 12~58V DC
Hand Quiescent Current 58V @ 0.2A
Hand Communication Interface USB
RGB Camera Integrated in Dex3-1 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 C includes all features of the R1-7a Standard arm plus the Dex3-1 force-controlled three-finger dexterous hand (non-tactile, with RGB camera).

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

* RGB camera is integrated into the Dex3-1 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 operating voltage: 12~58V DC. Quiescent current: 58V @ 0.2A. Communication interface: USB.

* 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 C Robotic Arm

SKU: R1-7A-PROFESSIONAL-C-ARM
$9,939.00
$9,939.00
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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