BrainCo Revo 3-21 Touch Robot Hand
In stock
- BRANDA:
- BRAINCO
- MÚNLA:
- REVO 3-21 TOUCH
- ORIGIN:
- China
- Warranty:
- 12 MONTHS
- AVAILABILITY:
- SUBJECT TO AVAILABILITY
- SKU:
- BrainCo-Revo-3-Touch
BrainCo Revo 3-21 Touch Robot Hand
The hard part of a dexterous hand is rarely the hand itself; it is the weeks spent connecting it to a controller, tuning it and finding out what it feels. The BrainCo Revo 3-21 Touch Robot Hand is aimed at that problem. It combines 21 independent motors with a full-palm tactile array and fieldbus interfaces that automation engineers already know, so a team can move from unpacking to manipulation experiments without a bespoke interface layer.
Robots Europa, based in Dublin, sells the BrainCo Revo 3-21 Touch Robot Hand and supplies it to customers across the EU and the DACH region. Robots Europa prepares the quotation, arranges delivery and provides support for the configuration you request.
Background
BrainCo and the Revo lineage
BrainCo is a Hangzhou-based brain-computer interface company. Revo 3 is its third-generation robot dexterous hand, following earlier Revo generations that this store also lists, among them the BrainCo Revo 1 Intelligent Dexterous Bionic Hand and the Brainco Revo 2 Touch Biomimetic Dexterous Right Hand (XTR). The Revo 3 family is a biomimetic hand designed for industrial automation, scientific research and advanced robotics manipulation, and it is the generation in which every one of the 21 degrees of freedom is actively driven.
The Revo 3 range is offered in four versions: Revo 3 U21, U21F, U21T and U21VT. They share the same hand dimensions, supply voltage, grip force, payload and communication figures, and they differ in tactile sensing. The U21 carries no tactile distribution, the U21F has fingertip tactile sensing, and the U21T and U21VT have full-palm tactile sensing. The full range is gathered in the BrainCo Revo 3 category.
Positioning and key technology
This page describes the Revo 3 U21T, the Touch version. Its defining feature is a full-palm piezoresistive array of 451 points, which lets the controller read where on the palm an object presses, in addition to reading joint motion. The mechanism is direct-driven and backdrivable, meaning each joint is moved by its own motor without a long transmission and can be pushed by an outside force. That matters for contact-rich work, where compliance and the ability to feel a collision are as valuable as the ability to move.
The 21 independent motors give 21 fully active degrees of freedom in a compact, lightweight form factor. The hand covers 33 grasp types of the Feix GRASP taxonomy and scores fully on the Kapandji opposition test, which is a clinical measure of how well the thumb can reach each fingertip. The joints are rated for over 1,000,000 flex cycles.
Technical Specifications
| Specification | Revo 3 U21T |
|---|---|
| Total degrees of freedom | 21 (direct-driven and backdrivable) |
| Motors | 21 independent motors |
| Hand dimensions | 216 × 108 × 50 mm |
| Supply voltage | 16–85 V |
| Max current | 10 A (24 V) |
| Max active grip force | ≥100 N |
| Max fingertip pinch force | ≥25 N |
| Total hand payload | 20 kg |
| Four-finger payload | 5 kg |
| Repeatability | 0.1° |
| Joint open/close time | 0.33 s |
| Grasp coverage | 33 grasp types (Feix GRASP taxonomy); full score on the Kapandji opposition test |
| Communication interface | EtherCAT / CAN FD / RS-485 |
| Communication frequency | 500 Hz |
| Onboard sensors | IMU (mainboard), temperature (mainboard) |
| Tactile distribution | Full-palm tactile |
| Tactile type | Full-palm piezoresistive array, 451 points |
| Durability | Rated for over 1,000,000 joint flex cycles |
| Software | C/C++ and Python SDKs for Linux and Windows; ROS support |
Specifications as published by the manufacturer; confirmed against the datasheet at quotation.
The manufacturer has not published the weight, the IP rating, the box contents, the operating temperature range or the hand material; they are confirmed at quotation.
What makes the Touch version different from the Basic hand?
The difference is sensing. The BrainCo Revo 3-21 Basic Robot Hand (Revo 3 U21) lists no tactile distribution, whereas the Touch version adds a full-palm piezoresistive array of 451 points. Motion, force, payload and communication figures are the same across the versions, so choosing the Touch does not change how the hand moves. It changes what the controller knows about contact.
For a task that is purely a repeatable pick and place, a hand without tactile data may be entirely adequate. For a task in which the object must be turned, steadied or repositioned after it is grasped, knowing where the palm is loaded gives the control software something to act on. That is the case for the Touch version, and it is also why research groups training manipulation policies tend to ask for tactile data from the start.
How does the Touch compare with the V-Touch?
The BrainCo Revo 3-21 V-Touch Robot Hand (Revo 3 U21VT) shares the full-palm tactile distribution of the Touch, with the same degrees of freedom, dimensions, voltage, force and communication figures. If the choice between the two matters to your project, describe your task when you request the quotation and we will advise on it.
Who is the BrainCo Revo 3-21 Touch Robot Hand for?
Research laboratories are the most obvious buyers. A hand with 21 active degrees of freedom, backdrivable joints and a tactile array on the palm suits work on in-hand manipulation, grasp learning and teleoperation, and the C/C++ and Python SDKs with ROS support fit the software stacks those groups already use.
Automation engineers form the second group. EtherCAT, CAN FD and RS-485 interfaces, with a communication frequency of 500 Hz, mean the hand can be placed on an existing network rather than behind a custom gateway. A payload of 20 kg for the whole hand and 5 kg for the four fingers gives a sense of the loads in question.
Integrators and robot-arm builders who need an end-effector for humanoid or dual-arm platforms will also find the form factor relevant. For those who do not need palm tactile sensing, the Basic version is the simpler choice; for those who need only fingertip contact data, the Revo 3 range includes the U21F.
What is the BrainCo Revo 3-21 Touch Robot Hand used for?
- Contact-rich manipulation research: the palm array records where and how an object loads the hand during turning, steadying and repositioning.
- Grasp-taxonomy studies: coverage of 33 Feix grasp types supports systematic comparison of grasp strategies.
- Industrial automation cells: fieldbus connectivity allows the hand to work alongside conventional controllers and drives.
- Teleoperation and demonstration learning: backdrivable joints and tactile feedback give operators and learning systems richer data.
- Humanoid and dual-arm platforms: a compact hand with 21 active degrees of freedom serves as the end-effector for general-purpose robots.
- Teaching and prototyping: Python and C/C++ SDKs for Linux and Windows let students and developers build quickly on one hand.
Pricing and Availability
We do not print prices on this page. Robots Europa provides a quotation for the BrainCo Revo 3-21 Touch Robot Hand on request, and delivery, customs and support are arranged together with that quotation. Tell us about your host robot, controller and task, and we will propose the right configuration. Everything we can state about this product is available on this page.
Frequently Asked Questions
Which version is this page about?
It describes the Revo 3 U21T, the Touch version, which has full-palm tactile sensing. The figures in the table belong to that version.
What power supply does the hand need?
The supply voltage is 16–85 V, with a maximum current of 10 A at 24 V. The manufacturer recommends a stable 24 V DC supply rated at least 100 W to reduce the risk of voltage drop.
How do I connect it to my controller?
The hand offers EtherCAT, CAN FD and RS-485 interfaces, with a communication frequency of 500 Hz.
Which software is supported?
C/C++ and Python SDKs are available for Linux and Windows, and ROS is supported.
How many tactile points does the palm have?
The full-palm piezoresistive array has 451 points.
What payload can the hand carry?
The total hand payload is 20 kg and the four-finger payload is 5 kg.
Where can I buy the BrainCo Revo 3-21 Touch Robot Hand and what does it cost?
You can buy it from Robots Europa, which supplies customers across the EU and the DACH region. The cost depends on the configuration and project, so please request a quotation; we do not publish prices on this page.
Summary
The BrainCo Revo 3-21 Touch Robot Hand removes much of the friction that stands between a dexterous hand and a working experiment: 21 independent motors, backdrivable joints, standard fieldbus interfaces, cross-platform SDKs and a 451-point tactile palm that tells the controller what the hand is touching. If your project needs a hand that can feel as well as move, this page is the starting point.
