Who this fits
For teams that need a professional upper-limb actuator supplier to solve space, mass, cable path, and repeatability constraints.
← Back to Products
Compact Humanoid Arm and Wrist Actuators
Custom compact actuator modules for humanoid arms, wrists, elbows, shoulders, necks, and hands where low mass, quiet motion, cable routing, and fine control matter.
Target Buyer:For teams that need a professional upper-limb actuator supplier to solve space, mass, cable path, and repeatability constraints.
Custom Program Fit, Not Standard Model Browsing
This page should help a robotics buyer decide whether this product family belongs in the RFQ path and what evidence must be attached before a prototype or pilot order is credible.
First engineering metric
Mass budget: Upper-body joint dependent
Pilot risk to control
The actuator fits one side but fails mirrored left/right assembly
Capability Highlights
- Custom upper-body actuator packaging for slim arms, wrists, elbows, shoulders, neck, and torso mechanisms
- Lightweight housing, compact motor, reducer, encoder, and harness integration for dense robot assemblies
- Support for mirrored left/right joints, special connector positions, and low-noise operation requirements
Typical Applications
- Humanoid shoulder, elbow, wrist, and neck joints
- Dexterous manipulation platforms
- Compact upper-body robot modules
Best-Fit Buying Signals
- Humanoid shoulder, elbow, wrist, and neck joints
- Custom upper-body actuator packaging for slim arms, wrists, elbows, shoulders, neck, and torso mechanisms
- Fit torque density and cable routing into narrow upper-body envelopes
Redirect the RFQ If
- Architecture still undecided: Compare QDD, harmonic, cycloidal, planetary, linear, and hybrid reducer paths before freezing the actuator drawing.
- Only the mechanical housing is in scope: Route the inquiry to precision housings, bearing seats, flanges, shafts, datum control, and inspection evidence.
- No RFQ baseline exists yet: Build the first-pass package around CAD, torque-speed, duty cycle, envelope, quantities, and acceptance tests.
Engineering Focus
- Fit torque density and cable routing into narrow upper-body envelopes
- Control acoustic noise, backlash, low-speed smoothness, and encoder repeatability
- Coordinate mirrored interfaces and batch consistency for left/right robot limbs
Key Evaluation Matrix
| Metric | Typical Range | Why It Matters |
|---|---|---|
| Mass budget | Upper-body joint dependent | Arm and wrist mass affects payload, dynamic control, battery life, and the sizing of upstream shoulder joints. |
| Cable routing | Side exit, rear exit, or hollow path | Connector conflicts often block otherwise acceptable actuator designs inside humanoid limbs. |
| Low-speed smoothness | Reducer and control dependent | Manipulation and head-motion joints need smooth motion rather than only high peak torque. |
Evidence to Request Before Pilot Release
Product selection is only useful when it connects to a buyer-visible evidence path. These proof gates turn the page from a capability description into an RFQ checklist.
| Proof Gate | Evidence to Ask For |
|---|---|
| Drawing baseline | CAD package, controlled drawing revision, CTQ list, open trade-offs, NRE scope, and prototype/pilot responsibility. |
| RFQ evidence package | Buyer-side package with joint map, CAD/drawing baseline, torque-speed or force-stroke targets, validation request, pilot quantity, and report expectations. |
| Evidence library | Stage-by-stage map for CMM, FAI, actuator validation, electronics/FCT, traceability, NCR, packaging, and pilot release records. |
| Test plan checklist | Operating cycle, fixture boundary, torque-speed or force-stroke method, thermal-rise setup, backlash method, FCT, endurance, and report handoff. |
| Sample PO checklist | Drawing revision, CTQ acceptance limits, report deliverables, sample variants, buyer-supplied boundaries, change rules, packaging, and delivery records. |
| Manufacturing proof | FAI, CMM, datum checks, bearing fit, flange flatness, output runout, surface treatment, and outgoing reports. |
| Actuator validation | Torque-speed, thermal rise, backlash, noise, FCT, burn-in, traceability, nonconformance, and pilot release records. |
| BOM and sourcing control | Approved parts, restricted suppliers, substitutions, lead time, firmware boundary, harness, packaging, and second-source risk. |
RFQ Checklist
- Joint name, available OD and axial length, torque-speed target, and mass limit
- Cable path, connector location, hollow-shaft requirement, and mirrored part needs
- Noise target, backlash target, encoder resolution, and control protocol
- Prototype quantity, pilot forecast, and sample test criteria
Risk Controls
- The actuator fits one side but fails mirrored left/right assembly: Review mirrored cable exits, handed interfaces, mounting access, and fixture plan before releasing drawings.
- Small actuator size causes heat buildup or noisy operation: Check winding, current limit, reduction ratio, housing thermal path, and noise target together.
Prototype to Pilot Workflow
A serious custom actuator inquiry should show how the selected product family moves from feasibility review into repeatable pilot manufacturing.
Step 1
Feasibility
Review CAD, joint load, envelope, thermal boundary, cable path, and custom actuator architecture risk.
Step 2
Prototype
Build the first sample against defined torque-speed, fit, electrical, mechanical, and inspection assumptions.
Step 3
EVT / DVT
Run thermal, backlash, noise, endurance, impact, metrology, and functional checks against the application duty cycle.
Step 4
Pilot
Freeze drawing/BOM revisions, evidence package, outgoing inspection, packaging, spare strategy, and repeat-build controls.
Start a Product-Specific RFQ
This form is prefilled with Compact Humanoid Arm and Wrist Actuators. Add CAD envelope, torque-speed target, duty cycle, validation needs, quantity, and schedule so the response can start with DFM questions instead of generic sample pricing.
Product Gallery
Buyer FAQ
Can you make nonstandard slim arm actuators?
Yes. Send the envelope and key torque-speed requirements. We can review compact motor, reducer, housing, and wiring options.
Do you support custom cable exits and connectors?
Yes. Connector location, harness length, cable exit direction, and strain relief can be included in the mechanical review.
Related Resources
Inquiry Email
Include target torque/speed, quantity, and delivery location.
Application Engineer
+8618857971991
Talk directly about drawings, torque-speed targets, and RFQ data gaps.