Gaia Hand 20

Hot-swappable joints define the Gaia Hand 20 from Stella Robot, a young company in Shenzhen's Nanshan district: its twenty degrees of freedom, sixteen active and four passive adaptive, come from proprietary micro joint modules that can be exchanged in under five minutes. The modules self-lock when power fails and are rated for more than 200,000 full-stroke cycles.

The hand weighs about 790 g and, according to the maker, carries 15 kg. Sensing depends on the tier: Base has joint encoders only, Pro adds three-axis force sensors on the five fingertips, and Ultra brings a full-surface tactile array with 0.1 N sensitivity and texture recognition. Isaac Sim and MuJoCo models and drivers are supplied, but hardware interfaces, voltage and dimensions are not published.

Sales began in August 2025; in its announcement of 7 August 2025 the maker priced the Base at a promotional 9,998 CNY against a regular 16,999 CNY for a run of 88 units, the Pro at 32,999 CNY and the Ultra at 79,999 CNY on pre-order. Uses are research, humanoids and teleoperation.

The same company's tendon-driven answer is the Pantheon Hand 20; among in-hand-motor designs with a similar joint count, HX5-D20 is the established alternative.