Introduction
1X's July 2026 engineering release describes NEO's hand and wrist as a 25-degree-of-freedom tendon system. Twenty-two axes are fully actuated across the fingers and palm, with three more at the wrist. The company also reports force-controlled backdrivable joints and tactile surfaces that measure normal force, contact location and shear.
Those specifications describe the hardware. Household dexterity still has to be measured through repeated grasps, slip recovery, object damage, intervention rate and durability under the exact task conditions.
Key findings
- 1X states 25 total DoF: 22 fully actuated axes in the fingers and palm plus three at the wrist.
- The tendon transmissions use low ratios of about 5:1 to 15:1, and 1X says every joint is force-controlled and backdrivable.
- 1X reports up to 45 N of distal finger flexion force and 17.75 Nm of wrist torque.
- The tactile surfaces measure normal force, contact location and shear for contact and slip feedback.
- Force, IP68 sealing, positioning accuracy and lifecycle figures remain manufacturer measurements without a common independent test protocol.
1X NEO Hand 25 DoF, Tendon Drive and Tactile Sensing - evidence comparison
The table records what each source establishes and keeps missing data visible.
| System or method | What the evidence establishes | Evidence class | Main unresolved point |
|---|---|---|---|
| Published kinematics | 1X states 25 total DoF including wrist and 22 fully actuated finger and palm DoF. | Officially documented | Published force and lifecycle figures are manufacturer claims. |
| Published force figures | The company reports 45 N distal finger flexion and 17.75 Nm wrist torque. | Company measurement | Independent reliability, contamination and long-duration household tests are unavailable. |
| Domestic demonstrations | NEO has been shown handling household objects, while the commercial model still includes human expert assistance for unsupported tasks. | Human-in-the-loop product evidence | The share of autonomous versus remotely assisted hand use is task-dependent. |
Evidence classification
- Officially documented specifications, standards or project status stated by the responsible organization.
- Real-system evidence demonstrations or deployments performed on physical hardware under described conditions.
- Company claim a numerical or operational statement reported by the company and not independently audited.
- Simulation or research evidence useful for mechanisms, but not proof of field deployment.
- Insufficient public evidence control mode, trial count, version or operating conditions are missing.
How the 25-DoF architecture is distributed
1X allocates 22 fully actuated degrees of freedom to the fingers and palm and three to the wrist. The company says the layout was chosen to support thumb opposition, palm shaping, in-hand rotation and small-object manipulation.
The actuators sit farther up the arm and pull tendons through the wrist. 1X reports transmission ratios of roughly 5:1 to 15:1, which are lower than the high-ratio gear trains used in many robot hands.
Force control and tactile feedback
1X says all 25 joints are force-controlled and backdrivable. External contact can move a finger through the transmission, while the controller reads joint effort and position.
The tactile surfaces measure normal force, contact location and shear. Shear is useful for detecting the start of a slip, while normal force shows how hard the fingers are pressing on an object.
Published strength, accuracy and sealing
1X reports peak torque of 3.5 Nm at the thumb CMC joint, 2.6 Nm at the finger MCP joints, distal flexion force up to 45 N and wrist torque of 17.75 Nm. The same engineering release lists ±0.2 mm positioning accuracy and IP68 sealing for the hands.
These numbers come from 1X. The public material does not provide a common third-party protocol covering sample size, duty cycle, temperature, contamination, failure criteria and post-test performance.
Durability claims need operating conditions
1X says components and full finger assemblies have completed millions of test cycles and that wrist joints passed more than two million cycles under high load. The current NEO product page also lists two million nominal load cycles for the tendon drive.
Cycle counts are useful only with load, speed, maintenance and failure definitions. Field data from repeated household use would show how tendon tension, tactile calibration, coverings and joints age outside the test line.
Autonomy and human assistance are separate from hand hardware
The current NEO product page says the robot works autonomously by default and offers scheduled Expert Mode when it does not know a chore. That means a successful household task may involve different control paths depending on the task and software state.
For manipulation claims, useful reporting should state whether the run was autonomous, scripted, teleoperated or expert-assisted, then include attempts, failures, resets and object damage.
Limitations and missing information
- Published force and lifecycle figures are manufacturer claims.
- Independent reliability, contamination and long-duration household tests are unavailable.
- The share of autonomous versus remotely assisted hand use is task-dependent.
- Specifications, prices, repositories and deployment status can change after publication.
- Benchmarks from different robots or environments are not directly comparable.
Conclusion
1X publishes unusually detailed hand specifications for NEO: 25 total DoF, low-ratio tendon transmissions, force-controlled backdrivable joints, tactile shear sensing, up to 45 N distal flexion force and 17.75 Nm wrist torque. Long-duration household reliability, intervention rates and independent cross-hand testing are still missing from the public record.
Frequently asked questions
How many degrees of freedom does the 1X NEO hand have?
1X states 25 total degrees of freedom: 22 fully actuated axes in the fingers and palm plus three at the wrist.
How much force does 1X report?
1X reports distal finger flexion force up to 45 N, 3.5 Nm peak torque at the thumb CMC joint, 2.6 Nm at finger MCP joints and 17.75 Nm at the wrist. These are company measurements.
Can the NEO hand sense slip?
1X says its tactile surfaces measure normal force, contact location and shear. Shear can indicate that an object is starting to slide relative to the hand.
Are the durability claims independently verified?
The detailed cycle, force, sealing and accuracy figures currently come from 1X. The public record does not include a standardized independent test covering the same conditions.
Sources and methodology
Sources for the NEO hand were rechecked on September 25, 2026 against the current 1X hand engineering release and NEO product page. Company measurements remain attributed to 1X, and independent durability data are not inferred where no public protocol is available.
Related TechniaHQRobot guides
Source review notes
Review date recorded July 11, 2026
Supported by the cited sources
- 1X states 25 total DoF including wrist and 22 fully actuated finger and palm DoF.
- Published force figures: The company reports 45 N distal finger flexion and 17.75 Nm wrist torque.
Not confirmed or incomplete
- Published force and lifecycle figures are manufacturer claims.
- Independent reliability, contamination and long-duration household tests are unavailable.
- The share of autonomous versus remotely assisted hand use is task-dependent.
Likely to change quickly
- Commercial availability, prices, model versions and software access.
- Deployment counts, company partnerships and repository maintenance status.
Share this article
Share the current TechniaHQRobot article page.
Continue reading
Open the latest robotics reporting, Physical AI analysis and hardware notes.