Typical module fit
Review this path for Bipedal knee and ankle linear joints, Elbow, wrist, and shoulder compact actuators, Robot gripper and end-effector force modules where load density, stroke, and package length drive the screw architecture.
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Humanoid Robot Actuators
Compact inverted roller screw sets for humanoid elbows, knees, ankles, wrists, grippers, and high-force linear joints.
Target Buyer:Humanoid robot OEMs and R&D teams that need prototype-to-small-batch screw supply for proprietary joint envelopes.
Solution Highlights
- High thrust density for compact joint modules
- Shock-load resistance for walking and manipulation cycles
- Custom lead and preload options for force-control behavior
- EVT/DVT validation support for joint-level load and torque checks
Common Use Cases
- Bipedal knee and ankle linear joints
- Elbow, wrist, and shoulder compact actuators
- Robot gripper and end-effector force modules
Implementation Focus
- Joint force, reflected inertia, and weight budget
- Back-drivability, preload, and force-control behavior
- Shock load, lubrication, sealing, and validation duty cycle
- Bearing selection, motor heat path, and limb packaging constraints
Application Decision Notes
Validation gate
Agree on force density, backlash/preload, lead accuracy, and load-cycle evidence before sample approval.
RFQ routing
Include the target actuator envelope, application duty cycle, quantity stage, and preferred inspection documents in the first inquiry.
Application Evaluation Matrix
| Evaluation Metric | Typical Range | Buyer Relevance |
|---|---|---|
| Force Density | High thrust in compact joint envelopes | Determines whether the actuator can fit the limb while still meeting torque targets. |
| Prototype Stage | EVT, DVT, PVT, small batch | Robotics teams usually need drawing iteration before production tooling is stable. |
| Validation Gate | Backlash, torque, lead accuracy, load cycle evidence | Lets mechanical, controls, and procurement teams approve the same sample baseline. |
| Joint Integration Inputs | Lever arm, mounting span, motor envelope, sensor plan | Humanoid joint performance depends on the complete actuator module, not the screw in isolation. |
RFQ Preparation Checklist
- Joint type: knee, ankle, elbow, wrist, hand, or custom linear joint
- Available OD, stroke, total length, motor envelope, and weight budget
- Peak/continuous force, speed, duty cycle, impact-load assumptions
- Required backlash/preload, stiffness, force-control behavior, and quantity stage
Risk and Mitigation
- Impact damage during walking: Review impact factor, material, heat treatment, preload margin, and joint-level test method before sample approval.
- Poor force-control feel from excessive friction or preload: Measure starting torque, running torque, backlash/preload, and back-drivability during prototype validation.
- Thermal drift inside sealed limbs: Check motor heat, lubricant, housing thermal path, and clearance across the robot duty cycle.
Recommended Products
Buyer FAQ
Do you provide the full actuator or just the screw?
We provide the core screw mechanics and can collaborate on the housing/rotor integration.
How does the inverted design help with weight distribution?
It can reduce package length when the nut, rotor, push tube, and bearing layout are designed together. The practical benefit should be checked with the full joint envelope, not only the screw length.
What is the typical lead time for custom humanoid actuator prototypes?
Prototype timing depends on geometry, material, heat treatment, inspection scope, and drawing readiness. Complete RFQ data lets us return a realistic sample schedule instead of a generic promise.
Do these actuators support force control?
They can support force-control strategies when lead, preload, friction torque, sensor layout, and controller assumptions are aligned. Buyers should validate this at the joint level.
Related Resources
Send drawings to [email protected] or WhatsApp [email protected] for a manufacturing review.
Inquiry Email
Include target OD, lead, stroke, load, quantity, and delivery country.
WhatsApp Engineering
WhatsApp Engineering Support
Best for quick RFQ clarification and drawing-review coordination.