ORCA Hand
The ORCA Hand is an open-source, tendon-driven, anthropomorphic robotic hand with 17 degrees of freedom, including an opposable thumb and actuated wrist, designed for human-like dexterity. It features integrated tactile sensors on all fingertips, popping joints for quick assembly (<8 hours), auto-calibration, and tensioning systems for reliability. Built for under 2,000 CHF in materials, it supports teleoperation, imitation learning, and sim-to-real RL, with proven durability over 10,000 cycles (~20 hours).
Robot Specifications
- Physical & Basic InformationPhysical & Basic
- Performance, Sensing & Control
- Software, Logistics & Integration
Hand Type
anthropomorphic
Intended Robot Type
research
Number of Fingers
5
Status
prototype
Thumb Config
opposable
Total DOF
17 (16 in fingers + 1 in wrist)
DOF Per Finger
3-4 (varies: e.g., fingers 2-5 have PIP/MCP/ABD; thumb has IP/MCP/CMC/ABD)
Independent Actuators
17 (Dynamixel micro-series or equivalent DC servos)
Underactuated Design
no
Palm Width (mm)
90 mm
Hand Length (mm)
195 mm (Anthropomorphic scale)
Hand Thickness (mm)
45 mm
Weight (g)
1200 g (Total system weight including forearm actuators)
Materials
PLA (FDM-printed backplate), silicone (molded skin), tendon cables
Finger Link Segments
3 segments per finger
Finger Joint Types
revolute (popping pin joints: MCP, PIP, IP, ABD, CMC)
Actuator Type
1200 g (Total system weight including forearm actuators)
Actuator Location
Forearm-mounted (Remote actuation to reduce hand inertia)
Available Countries
Switzerland, global research labs
Image Gallery
Below images are from ETH Zurich (Robotic Systems Lab)'s official sources
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Frequently Asked Questions
Get answers to common questions about this robot
Q1. What is the humanoid robot hand ORCA Hand, and what problem does it solve?
The ORCA Hand is an open-source, anthropomorphic robotic hand developed by the Soft Robotics Lab at ETH Zurich. It addresses challenges in providing reliable, low-cost dexterous manipulation for robotics research and education.
Q2. What are the main capabilities and key features of ORCA Hand?
ORCA Hand features 17 degrees of freedom in a tendon-driven design with an opposable thumb and actuated wrist. According to ETH Zurich (Robotic Systems Lab), it includes integrated tactile sensors, auto-calibration, and popping joints for reliability.
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