Linker Hand O30
World's Only Mass-Produced Full Direct-Drive Dexterous Hand
The Linker Hand O30 is a 20-degree-of-freedom dexterous hand that integrates high-performance brushless hollow-cup motors with precision worm gear joint modules. Every one of the 20 joints is independently driven by its own motor — no tendons, no linkages, no intermediate transmission. This full direct-drive architecture eliminates mechanical backlash at the root, delivering sub-millimeter repeatability and millisecond-level dynamic response.
The palm measures just 200 mm × 92 mm × 47 mm (excluding thumb) — nearly 1:1 with an adult human hand — and the entire unit weighs only 730 grams. Despite this compact form factor, the O30 delivers an industry-leading 30 kg rated payload with a self-locking worm gear design that requires zero holding power to maintain a grip.
Equipped with an integrated 6×11 piezoresistive tactile sensor array running at 200 FPS, the O30 provides real-time force feedback across all five fingertips — enabling precision tasks like screw fastening, fragile object handling, and adaptive grasp adjustment.
Complete Parameter List
Based on Linker Hand O30 Product Manual V1.0 (2026.07.14). All specifications verified.
⚙ Basic Parameters
| Parameter | Specification | Notes |
|---|---|---|
| Model | Linker Hand O30 | — |
| Degrees of Freedom | 20 (all active) | 20 independent joints, each direct-driven |
| Number of Joints | 20 active joints | No passive joints |
| Transmission | Direct Drive | Brushless hollow-cup motor + worm gear per joint |
| Control Interface | CAN / CAN-FD | Dual protocol support |
| Communication Frequency | 500 Hz | 2ms control loop |
| Weight | 730 g | Complete hand assembly |
| Max Payload | 30 kg | Rated load |
| Operating Voltage | DC 24V – 48V | Industrial power compatible |
| Static Current | 0.4 A @ 24V | Extremely low idle power |
| No-load Avg. Motor Current | 1.1 A @ 24V | — |
| Maximum Power | 150 W | Peak system power |
| Fingertip Position Repeatability | <0.2 mm | Sub-millimeter precision |
| Open/Close Time | 0.8 s | Full open to full close |
| Dimensions (L×W×H) | 200 × 92 × 47 mm | Palm, excluding thumb |
| Mounting | M3 screw flange | Flange interface provided |
| Connector | R20_V3.0_PAB20260529 | — |
| Holding Power | Zero (self-locking) | Worm gear self-locking design |
| Continuous Operation | 24/7 rated | Suitable for production lines |
| Firmware Upgrade | Online (via host PC) | Supports feature iteration |
💪 Force & Performance
| Performance Metric | Value | Notes |
|---|---|---|
| Max Thumb Fingertip Force | 24 N | Single thumb tip |
| Max Four-Finger Fingertip Force | 30 N | Per finger tip |
| Five-Finger Max Grip Strength | 70 N | Combined grip |
| Max Payload | 30 kg | Rated industrial load |
| Holding Power Consumption | 0 W | Self-locking worm gear |
| Open/Close Time | 0.8 s | Full stroke |
| Position Repeatability | 0.2 mm | Fingertip position |
📡 Sensor System
| Parameter | Specification |
|---|---|
| Sensor Type | Piezoresistive Pressure Array |
| Array Size | 6 × 11 (66 taxels) |
| Spatial Resolution | 9.6 × 16.47 mm |
| Force Detection Threshold | 50 g |
| Measurement Range | 0.5 – 20 N |
| Frame Rate | 200 FPS |
| Lifespan | 100,000 cycles |
🤚 Joint Range of Motion
Each of the 20 active joints has independently calibrated range of motion. The table below shows maximum motion angles from the V1.0 manual.
| Joint Name | Joint | Max Motion Angle (°) | Finger |
|---|---|---|---|
| Thumb IP | thumb_ip | 95.4° | Thumb |
| Thumb MCP | thumb_mcp | 90.0° | Thumb |
| Thumb CMC Yaw | Thumb_cmc_yaw | 120.0° | Thumb |
| Thumb CMC Roll | Thumb_cmc_roll | 35.0° | Thumb |
| Finger DIP | Finger_dip | 90.0° | Index–Pinky |
| Finger PIP | Finger_pip | 93.2° | Index–Pinky |
| Finger MCP Pitch | Finger_mcp_pitch | 101.2° | Index–Pinky |
| Index MCP Roll | index_mcp_roll | 26.8° | Index |
| Middle MCP Roll | middle_mcp_roll | 36.8° | Middle |
| Ring MCP Roll | ring_mcp_roll | 25.4° | Ring |
| Pinky MCP Roll | pinky_mcp_roll | 32.0° | Pinky |
What Makes O30 Different
Beyond raw specs — the O30 is engineered with features that address real deployment challenges.
Precision Position Control
Closed-loop position control on every joint using brushless motor + worm gear transmission at the micrometer level. The hand can smoothly execute pre-set trajectories — from full-hand movements to individual joint micro-adjustments. Ideal for precision assembly, path-following operations, and tasks demanding high positional accuracy.
Adaptive Speed Control
Finger movement speed adjusts dynamically to task requirements. High-speed mode maximizes throughput for grab-and-place workflows. Low-speed mode ensures safe, precise operation for delicate tasks. The O30 seamlessly covers the full spectrum from rapid sorting to sub-millimeter micro-manipulation — efficiently balancing speed with safety.
Real-Time Haptic Feedback
Fingertip sensors perceive and precisely control force and torque in real time. The system dynamically adjusts output force — preventing damage to fragile objects from excessive force while avoiding slippage from insufficient grip. Critical for screw fastening, thin-sheet handling, and any task requiring reliable force-controlled grasping.
Online Firmware Upgrade
Supports online firmware updates via host computer — enabling continuous iteration of functional modules and optimization of core performance parameters. Designed for industrial and research scenarios that require long-term upgradeability, ensuring your hardware stays current without physical swaps.
Form Factor
The O30 palm (excluding thumb) measures 200 × 92 × 47 mm — designed to match adult human hand proportions for natural kinematics and seamless Sim2Real transfer.
Where O30 Excels
The O30 is purpose-built for scenarios that demand precision, speed, and reliability — not just lab demos.
Automotive Precision Assembly
Sub-millimeter repeatability with force-controlled grasping makes the O30 ideal for high-precision automotive tasks: connector insertion, small-component assembly, and fastening operations where traditional grippers lack the finesse.
Aerospace Special Operations
Lightweight (730g) with 30kg payload and 24/7-rated continuous operation. Suitable for aerospace manufacturing tasks requiring both delicate handling and robust gripping in complex assembly workflows.
Logistics & Parcel Sorting
0.8s open/close time combined with adaptive speed control makes the O30 highly effective for sorting irregularly shaped parcels. Speed-adaptive modes allow rapid throughput while maintaining grip integrity on variable objects.
Hazardous Environment Substitution
Remote operation capability with full haptic feedback makes the O30 suitable for tasks in hazardous environments — nuclear, chemical, explosive atmospheres — where human operators need to be removed from the work zone.
Academic Research & Sim2Real
The direct-drive architecture's deterministic motion model and 1:1 human hand proportions make the O30 the ideal hardware platform for dexterous manipulation research. Train in simulation, deploy on hardware with minimal domain gap.
3C Electronics Manufacturing
Compact form factor (200×92×47mm) and 0.2mm repeatability are perfectly suited for electronics assembly lines — PCB handling, connector mating, and small-component placement where precision and cleanliness matter.
Package Contents
Every O30 order ships with everything needed to get started.
| # | Item | Qty | Description |
|---|---|---|---|
| 1 | Linker Hand O30 | 1 | Fully assembled and calibrated dexterous hand unit |
| 2 | USB-to-CAN-FD Debugging Cable | 1 | For host PC communication and firmware upgrade |
| 3 | Connector Cable XT30 (2+2) | 1 | Power and signal connection cable |
| 4 | Power Adapter | 1 | AC-DC adapter for bench operation |
| 5 | Power Cable (US standard) | 1 | Mains power cable |
| 6 | Product Manual & SDK | 1 | Digital documentation + software development kit |
| 7 | Calibration Report | 1 | Per-unit factory calibration data sheet |
Sourced in China, Supported in California
When you buy an O30 from RobX, you get more than a component. You get a partner who speaks your language — literally and technically.
US-Based PhD Technical Support
Your technical questions answered by a robotics PhD in California — in fluent English, during US business hours. No timezone delays, no translation errors, no "sorry, engineer is on Chinese New Year."
California Sample Inventory
O30 units stocked in California for immediate evaluation. Test in your lab within days — not weeks. No customs clearance, no freight forwarding, no surprises.
DDP Pricing & Full Logistics
All pricing is DDP (Delivered Duty Paid). We handle export, freight, customs, and import duties. You receive one invoice and one delivery. No hidden costs, no customs brokers, no paperwork.
Direct Manufacturer Relationship
As an authorized distributor of LinkerBot, we get priority allocation, direct engineering escalation paths, and firmware update notifications — benefits individual buyers can't access.
Ready to Test the O30 in Your Lab?
Units in stock in California. Datasheet, pricing, and lead time within one business day.
Talk to a robotics PhD — not a sales rep reading from a script.
