The OpenArm is an open-source humanoid robot arm developed by Enactic and manufactured by WowRobo Robotics. It combines professional-grade mold manufacturing, precision CNC components, and custom-molded connectors to deliver a robust, scalable, and production-ready robotic arm solution. Designed for research, education, and industrial prototyping, OpenArm offers developers and enterprises a reliable platform for humanoid robotics innovation.
Notes：
This product includes one Leader and one Follower by default. You may also choose to receive two Leaders or two Followers instead. Please leave us a message with your preference after placing your order. If no message is received, we will reach out to you to confirm your selection.
Features
- Professional Mold Manufacturing — Superior aesthetics, weather resistance, and mechanical strength compared to standard 3D-printed parts.
- Precision CNC Components — High-accuracy machining with anodized finishing for enhanced durability and corrosion resistance.
- Custom-Molded Connectors — Secure, stable, and professional cable connections designed for long-term operational reliability.
- Official Manufacturing Partner — Large-scale production capabilities ensure consistent quality and performance standards.
- Compliance & Certifications — CE and UKCA conformity for machinery safety, electrical safety, and EMC standards.
- Open-Source Ecosystem — Fully integrated with the LeRobot community for rapid collaboration, updates, and technical support.
General Specifications
| Category | Specification |
|---|---|
| Package Dimensions | 87 cm × 57 cm × 37 cm |
| Total Weight | 41 kg (including protective flight case and accessories) |
Arm & System Specifications
| Category | Details |
|---|---|
| Degrees of Freedom (per arm) | 7 DOF |
| Configuration | Bimanual robotic arms |
| Arm Reach | 633 mm |
| Weight per Arm | 5.5 kg |
| Control Frequency | 1 kHz CAN-FD |
| Payload Definition | |
| Nominal Payload | 4.1 kg – Maximum mass held for 1 minute in worst-case posture (arm fully extended) |
| Peak Payload | 6.0 kg – Maximum mass lifted from lowest to worst posture within 3 seconds |
Joint & Gripper Motor Overview
| Joint / Gripper | Motor Model | Rated Torque | Peak Torque |
|---|---|---|---|
| J1 | DM-J8009P | 20 Nm | 40 Nm |
| J2 | DM-J8009P | 20 Nm | 40 Nm |
| J3 | DM-J4340P | 9 Nm | 27 Nm |
| J4 | DM-J4340 | 9 Nm | 27 Nm |
| J5 | DM-J4310 | 3 Nm | 7 Nm |
| J6 | DM-J4310 | 3 Nm | 7 Nm |
| J7 | DM-J4310 | 3 Nm | 7 Nm |
| Gripper | DM-J4310 | 3 Nm | 7 Nm |
Industrial Applications
- Humanoid Robotics Research — The open-source architecture enables rapid prototyping and advanced academic exploration.
- Industrial Automation — Durable components and certified compliance make it suitable for production line integration.
- Education & Training — A high-performance, accessible platform for robotics labs and advanced engineering programs.
- Physical AI Development — Seamless integration with the LeRobot ecosystem for shared innovation in machine learning and dexterity.
Why Choose WowRobo OpenArm?
The OpenArm offers a unique combination of open-source flexibility, industrial-grade durability, and certified compliance. With professional manufacturing, precision CNC parts, and custom connectors, it is built for both research labs and commercial robotics projects. Its native integration with the LeRobot community ensures ongoing support, active collaboration, and continuous technological innovation.