LINKERBOT Linker Hand L20 21‑DOF Dexterous Robotic is part of the Linker Hand dexterous robotic hand series for robotic manipulation, education, research, industrial automation, and humanoid end-effector integration. Linker Hand L20 is the professional high-DOF linkage-drive model in the guide, intended for complex fine manipulation, embodied-AI training, data collection, and difficult humanoid hand development tasks. This listing is organized as a multi-variant product so the hand side, communication interface, and other available options can be selected from one product page. Features 21-DOF professional platform - 16 active + 5 passive joints provide the most active joints in the linkage-drive line covered by the guide. Fine manipulation focus - The guide recommends L20 for complex in-hand operation and high-strength embodied-AI training workflows. Multi-modal sensing path - The product introduction lists pressure-resistive sensing as standard and capacitive or visual-tactile sensing as optional paths. Robust research structure - The guide highlights data collection support, shock resistance, and suitability for demanding training scenarios. CAN/RS485 integration - The guide lists CAN/RS485 control interfaces, with selectable interface variants on this product page. Specifications Specification Value Product LINKERBOT Linker Hand L20 Series positioning Professional high-DOF model Degrees of freedom 21 DOF Joint count 16 active + 5 passive Transmission Linkage drive Drive architecture Self-developed joint module Control interface CAN/RS485 Weight 1100 g Maximum load 10 kg Working voltage DC 24 V +/-10% Static current 0.2 A No-load average current 1 A Maximum current 3 A Repeatability +/-0.20 mm Maximum thumb fingertip force 18 N Maximum four-finger fingertip force 20 N Thumb lateral rotation range 1.54 rad (88.3 deg) Recommended scenarios Frontier research, high-difficulty industrial automation, humanoid hand development, and embodied-AI data collection L20 Selection Notes The guide positions L20 as the professional high-DOF option for complex in-hand manipulation and embodied-AI training data collection. Best fit: frontier research, difficult industrial automation tasks, humanoid hand development, and high-strength training workflows. Selection keywords: most active joints in the linkage-drive line, fine manipulation, data collection, and shock-resistant structure. Architecture: 16 active + 5 passive joints with linkage transmission and CAN/RS-485 interface options. Linker Hand Series Selection Overview This overview helps compare the Linker Hand models by positioning, joint architecture, weight class, and recommended application direction. Model Positioning and drive Active/passive joints Weight Best-fit summary Linker Hand O6 High-value industrial model, linkage drive 6 active + 5 passive 370 g Lightest and strongest load-focused option for industrial scenarios. Linker Hand O7 Entry research and teaching model, linkage drive 7 active + 10 passive 634.5 g High-value choice with more DOF for introductory research and education. Linker Hand L6 High-precision research model, linkage drive 6 active + 5 passive about 620 g Balanced precision, speed, and load for precision assembly and research exploration. Linker Hand L20 Lite High-DOF standard model, linkage drive 10 active + 10 passive 800 g Flexible multi-DOF hand with finger splay for education and research exploration. Linker Hand L20 Professional high-DOF model, linkage drive 16 active + 5 passive 1100 g Most active joints in the linkage-drive line for complex manipulation and embodied-AI training. Linker Hand L30 Flagship bionic model, tendon-style drive 17 active + 4 passive 1400 g Flagship option for smooth, fast, human-like fine manipulation. Linker Hand Series Technical Comparison The technical comparison below is based on the Linker Hand product introduction guide. O7 is covered in the selection overview above; the source technical comparison table lists O6, L6, L20 Lite, L20, and L30. Parameter O6 L6 L20 Lite L20 L30 Degrees of freedom 11 11 20 21 21 Joint count 6 active + 5 passive 6 active + 5 passive 10 active + 10 passive 16 active + 5 passive 17 active + 4 passive Transmission Linkage drive Linkage drive Linkage drive Linkage drive Tendon-style bionic drive Drive architecture Self-developed joint module Self-developed joint module Self-developed joint module Self-developed joint module Self-developed joint module Control interface CAN/RS485 CAN/RS485 CAN/RS485 CAN/RS485 CAN FD Weight 370 g 623.5 g 800 g 1100 g 1400 g Maximum load 50 kg 28 kg 5 kg 10 kg 2 kg Working voltage DC 24 V +/-10% DC 24 V +/-10% DC 24 V +/-10% DC 24 V +/-10% DC 12 V Static current 0.1 A 0.2 A 0.2 A 0.2 A 0.45 A No-load average current 0.4 A 0.75 A 0.5 A 1 A 0.63 A Maximum current 3 A 1.4 A 1.59 A 3 A 2.3 A Repeatability
