Linker Hand

DexScale

A Diverse and Large-Scale Dataset for General Vision-Tactile Dexterous Manipulation

Dexterous manipulation is essential for building general-purpose embodied agents, yet learning such skills remains challenging due to high-dimensional hand control, complex contact dynamics, and the lack of large-scale, high-quality datasets. Existing robot manipulation datasets are often limited to simple grippers, visual observations, single embodiments, or short-horizon tasks, making them insufficient for studying general dexterous manipulation.

In this work, we introduce DexScale, a diverse and large-scale vision-tactile dataset designed for general dexterous robotic manipulation. DexScale supports dexterous hands with different degrees of freedom and provides synchronized multimodal observations, including robot actions, RGB-D visual perception, and in-hand tactile sensing. Built upon a high-fidelity isomorphic data collection system, DexScale captures fine-grained, smooth, and contact-rich manipulation trajectories that are difficult to obtain with conventional teleoperation pipelines.

The dataset covers a broad range of tasks and scenarios, including tool use, dexterous object manipulation, diverse grasping, bimanual coordination, long-horizon execution, and interactions in varied environments. By scaling dexterous manipulation data across embodiments, modalities, tasks, and scenes, DexScale provides a foundation for training and evaluating policies that integrate spatial perception, tactile feedback, and precise hand control. Together, DexScale aims to bridge the gap between large-scale robot learning and fine-grained dexterous control, offering a data foundation for developing general-purpose vision-tactile manipulation policies.

Dataset Statistics

Diversity and usability assurance through strategic collection.

Scenarios Distribution

Kitchen & Cooking
23%
Music & Toys
22%
Office & Study
12%
Personal Care
11%
Living Room
10%
Others
22%

Atomic-Skills Distribution

Pick & Place
28%
Insert
20%
Open / Close & Press
18%
Tool Use
7%
Pour & apply
7%
Others
20%

Object Categories

Kitchenware
27%
Toys, Games & Music
18%
Office Items
12%
Electronics & Travel
12%
Clothing & Fabric
12%
Others
19%

Episode Duration

< 30s
38%
30s–1min
36%
1–3min
26%
COLOR
DEPTH
TACTILE
LANGUAGE
0W+
TRAJECTORIES
0+
TASKS
0+
SCENARIOS

Multimodal Scenarios

0:00 / 0:00
Scenario 1 / 5

Dexterous Hand Series

Two hands from lightweight deployment to high-DoF precision: linkage drive with CAN/RS485, integrating seamlessly across our humanoid platforms.

16DOF
Linker Hand L20 dexterous robotic hand

High-DoF dexterous hand

Linker Hand L20

18NMax. thumb tip force
20NMax. four-finger tip force
100NMax. five-finger grasp force

Basic specifications

Degrees of freedom16
Number of joints21 (16 active + 5 passive)
Drive typeLinkage transmission
Control interfaceCAN/RS485
Communication rate500 Hz
Weight≈1200 g
Max. payload20 kg
Operating voltageDC 24V—48V
Quiescent current0.3 A
Avg. no-load motion current0.4 A
Max. current1.8 A
Repeat positioning accuracy±0.2 mm
Open/close time0.9 s
6DOF
Linker Hand L6 dexterous robotic hand

Lightweight dexterous hand

Linker Hand L6

10NMax. thumb tip force
8NMax. four-finger tip force
50NMax. five-finger grasp force

Basic specifications

Degrees of freedom6
Number of joints11 (6 active + 5 passive)
Drive typeLinkage transmission
Control interfaceCAN/RS485
Weight607 g
Max. payload28 kg
Operating voltageDC 24V ±10%
Quiescent current0.2 A
Avg. no-load motion current0.75 A
Max. current1.4 A
Repeat positioning accuracy<±0.2 mm
Robot teleoperation hardware

Robot teleoperation system

Deep integration with data collection: real-time capture of robot and teleop device telemetry to support reliable data for humanoid foundation model training.

Teleoperation arm LTA

  • DoF: 7 per arm, 14 total (dual arms)
  • Single-arm reach: 658 mm
  • Mounting: suspended and chest-worn
  • Rated supply: 24 V, 0.075 A
  • Device weight: 1.4 kg
  • Bus: CAN at 1 Mbps
  • Sampling rate: 200 Hz
  • Joint angle resolution: 0.087°

Force-feedback glove LFFG

  • Tracking: 21 DoF per hand, high-precision joint angles
  • Data rate: 100 Hz wired / 30 Hz wireless
  • Power: 5 V USB Type-C
  • Weight: 390 g
  • Joint angle accuracy: 0.08°
  • Peak torque: 3.5 kg·cm
  • Compatible with the full Linker Hand lineup
Usage Terms

Acknowledgement Requirement

If users conduct any analysis, data mining, model training, evaluation, or secondary development based on data from the DEXSCALE platform and produce papers, industry reports, open-source projects, model weights, or other public outputs, they must indicate the data source: https://dexscale.github.io/ and include the following acknowledgement:

Data source: DEXSCALE, a diverse and large-scale dataset for general vision-tactile dexterous manipulation.