Linker Hand L20 Lite
The Balanced Performer: High Payload Meets High DOF
The Linker Hand L20 Lite is a 20-DOF (10 active + 10 passive) dexterous hand that achieves an exceptional balance of payload, DOF, and weight. Self-developed joint motor modules with worm gear transmission deliver 25kg payload and 80N five-finger grip force at just 800g total weight.
With advanced worm gear self-locking design, the L20 Lite holds grip position with zero holding power. Multi-modal perception — configurable with cameras, electronic skin, and tactile/force sensors — builds a full "vision + touch" model for unstructured environments. The edge-cloud architecture enables one-click skill deployment without coding, and standard ROS plugins support secondary development.
Complete Parameter List
Based on Linker Hand L20 Lite Product Manual (2025.12.02). All specifications verified.
⚙ Basic Parameters
| Parameter | Specification | Notes |
|---|---|---|
| Model | Linker Hand L20 Lite | — |
| Degrees of Freedom | 10 | + 10 passive joints |
| Number of Joints | 20 (10 Active + 10 Passive) | Worm gear per joint |
| Transmission | Linkage Drive | Worm gear self-locking design |
| Control Interface | CAN / RS485 | 800kHz communication rate |
| Weight | 800 g | Complete hand assembly |
| Max Payload | 25 kg | Rated load |
| Operating Voltage | DC 24V ±10% | Industrial power compatible |
| Static Current | 0.2 A | Low idle power |
| No-load Avg. Motor Current | 0.5 A | — |
| Maximum Current | 3 A | Peak system current |
| Repeat Positioning Accuracy | <±0.2 mm | Force-position hybrid control |
| Open/Close Time | 1.2 s | Full stroke |
| Mounting | M3 screw flange | Standard flange interface |
| Connector | XT30 (2+2) | Power + CAN signal |
| Firmware Upgrade | Online (via host PC) | Continuous iteration |
💪 Force & Performance
| Performance Metric | Value |
|---|---|
| Max Thumb Fingertip Force | 15 N |
| Max Four-Finger Fingertip Force | 15 N |
| Five-Finger Max Grip Strength | 80 N |
| Max Payload | 25 kg |
| Open/Close Time | 1.2 s |
| Position Repeatability | <0.2 mm |
📡 Sensor System
| Parameter | Specification |
|---|---|
| Piezoresistive Array (Standard) | 6 × 12, 5g trigger, 20N range, 200FPS, 100K cycles |
| Capacitive Sensor (Optional) | ≥50Hz, 0–30N, 0.1N sensitivity, 1cm proximity |
| Vision (Optional) | Fingertip + palm + wrist multi-view cameras |
| Visual-Tactile Perception (Optional) | Deep learning deformation + depth mapping |
🤚 Joint Range of Motion
| Joint | Max Angle | Max Speed |
|---|---|---|
| Thumb Flexion (THUMB1–3) | 37.9° / 38.4° / 27.9° | 63.11 / 52.62 / 42.78 °/s |
| Thumb Lateral Swing | 69° | 63.21 °/s |
| Thumb Rotation | 60° | 50.9 °/s |
| Four-Finger Flexion (Joint 1–3) | 35.8° / 102° / 77.9° | 29.11 / 82.93 / 63.33 °/s |
| Finger Side Swing | 10.7°–17.2° | 44.17–84.62 °/s |
What Makes L20 Lite Different
The L20 Lite delivers the best payload-to-DOF ratio in the L-series lineup.
High Load Capacity
80N five-finger grip force and 25kg payload from an 800g package. Advanced worm gear transmission provides strong output torque with excellent self-locking performance for stability under load.
Precise Control
±0.2mm repeatability with CAN/RS485 at 800kHz communication rate. Force-position hybrid control algorithm simulates fine human hand operations from precise grasping to flexible pinching.
Compact & Efficient
Worm gear transmission with compact structure, large ratio, and self-locking. 800g total weight with 10 active joints enables complex movements and adaptive grasping in a space-efficient package.
Multi-Modal Perception
Configurable with vision, tactile, and force sensors. Edge-cloud architecture enables one-click skill deployment. ROS plugins and Python SDK support secondary development.
Where L20 Lite Excels
The L20 Lite's balanced specs make it versatile across research and service applications.
Education & Research
20-DOF with ROS plugins, multi-modal sensing, and no-code skill deployment. Ideal platform for dexterous manipulation research and teaching embodied AI.
Piano Performance
Independent finger control with 10 active joints enables complex finger coordination for musical performance, sign language, and fine gesture research.
Home Assistance
25kg payload handles diverse household objects. Multi-modal perception adapts to unstructured home environments. Cloud skills enable rapid task adaptation.
Elderly Care
Self-locking worm gear with zero-power holding provides safe, reliable grip for caregiving tasks. Force-controlled grasping prevents injury during human contact.
Package Contents
Every L20 Lite order ships with everything needed to get started.
| # | Item | Qty | Description |
|---|---|---|---|
| 1 | Linker Hand L20 Lite | 1 | Fully assembled and calibrated |
| 2 | USB-to-CAN Debugging Cable | 1 | Host PC communication |
| 3 | Connector Cable XT30 (2+2) | 1 | Power + CAN signal |
| 4 | Power Adapter | 1 | AC-DC bench adapter |
| 5 | Power Cable | 1 | Mains power cable |
| 6 | Product Manual & SDK | 1 | Digital documentation + ROS plugins |
Sourced in China, Supported in California
When you buy an L20 Lite from RobX, you get more than a component.
US-Based PhD Technical Support
Robotics PhD in California — fluent English, US business hours.
California Sample Inventory
Units stocked in California. Test within days.
DDP Pricing & Full Logistics
DDP pricing. One invoice, one delivery.
Direct Manufacturer Relationship
Authorized LinkerBot distributor.
Ready to Test the L20 Lite 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.
