OD 30-80 mm compact cycloidal reducer path for humanoid, quadruped, exoskeleton, and QDD actuator joints that need shock-load margin and controlled backlash.
| Metric | Typical Range | Why It Matters |
|---|---|---|
| Outer diameter class | OD 30-80 mm robotics joint path | Humanoid and quadruped joints are usually envelope-limited before they are catalog-limited. |
| Peak torque margin | Reference MC/WF models show 3x rated peak torque class | Shock, stumble, crash, and emergency-stop events often drive reducer damage before continuous torque does. |
| Backlash target | <= 1 arcmin reference class where applicable | Low backlash and stiffness reduce joint settling time and controller compensation work. |
Reference Model Specs
Use these values for first-pass actuator sizing. Final drawing, CAD availability, inspection evidence, and acceptance limits are confirmed during RFQ.
| Model | OD | Ratios | Rated / Peak | Backlash | Stiffness | Weight | Best Fit |
|---|---|---|---|---|---|---|---|
| WF07 / MC-40 | 40 mm | 21:1, 41:1 | 15 Nm / 45 Nm | <= 1 arcmin | 1.1 Nm/arcmin | 0.42 kg | Compact humanoid wrist, elbow, inspection, and light robot axes |
| WF17 / MC-79 | 79 mm | 21:1, 41:1, 61:1 | 50 Nm / 150 Nm | <= 1 arcmin | 6 Nm/arcmin | 0.85 kg | Humanoid elbow/knee, quadruped joints, compact QDD actuators |
| WF25 / MC-107 | 107 mm | 21:1, 31:1, 41:1, 51:1, 81:1 | 110 Nm / 330 Nm | <= 1 arcmin | 24 Nm/arcmin | 2 kg | High-load humanoid, exoskeleton, and compact robot joint axes |
| Decision Point | Choose When | Verify Before Quote | Next Internal Step |
|---|---|---|---|
| Outer diameter class is the first sourcing filter | Best for robot OEMs evaluating compact high-shock alternatives to harmonic drives in actuator-level joint designs. Use this path when outer diameter class (OD 30-80 mm robotics joint path) is more important than starting from a generic gearbox size. | Humanoid and quadruped joints are usually envelope-limited before they are catalog-limited. Include robot type, joint axis, payload, and torque profile in the first RFQ packet. | Compare Product Families |
| Mechanical interface risk is visible early | Map rated torque, peak torque, emergency-stop torque, and expected impact events separately. | Harmonic-drive comparison based only on ratio and size: Compare flexspline shock risk, peak torque margin, stiffness, no-load torque, and validation evidence in the same table. | Send RFQ Package |
| Sample acceptance must be measurable | Use prototype planning when peak torque margin must be confirmed against buyer-side machine tests. | Joint package conflict: Review motor pilot, brake, encoder, fasteners, cable route, and output support before freezing actuator CAD. | Plan Prototype Validation |
| Phase | Engineering / QC Checkpoint | Buyer Output |
|---|---|---|
| Requirement baseline | Robot type, joint axis, payload, and torque profile; Candidate OD class and available axial length. Confirm drawing revision, quantity, destination, and timeline in the same packet. | A quote-ready RFQ sheet that separates required performance from preferred options. |
| Engineering fit review | Map rated torque, peak torque, emergency-stop torque, and expected impact events separately. Review backlash, torsional stiffness, no-load torque, and reflected inertia together for servo tuning. Record open issues before sample cost and lead time are frozen. | A reducer shortlist and issue log for Compact Humanoid Cycloidal Reducer. |
| Prototype or incoming validation | Measure outer diameter class and peak torque margin against the agreed method. Compare flexspline shock risk, peak torque margin, stiffness, no-load torque, and validation evidence in the same table. | Inspection and test evidence with pass/fail limits, measured values, and revision actions. |
| Batch control and export readiness | Joint package conflict: tie the control plan to outgoing inspection, packaging, labeling, and shipment records. | Repeat-order package covering drawing baseline, CTQ records, packaging rules, forecast, and Incoterm. |
Manufacturing Evidence Pack
Use this pack to move a reducer inquiry from catalog interest to buyer-reviewable engineering evidence. The current page can frame the evidence path; approved reports, certificates, and drawings still need to come from the actual model-family review.
Scope
Product evidence path
Source
/products/compact-humanoid-cycloidal-reducer
These images support product recognition and envelope review. They are not inspection reports, certificates, or measured test results.
Buyer Review
Tooth profile, pin wheel, eccentric shaft, housing datum, bearing fit, and output interface reviewed as one reducer system.
Artifact to Request
Process photos, CTQ dimension list, approved 2D drawing, CMM or critical-dimension record when available.
Release Status
Requires model-family approval
Buyer Review
Which material route and hardness target apply to this model instead of a generic catalog claim.
Artifact to Request
Material route note, heat-treatment target, hardness inspection field, and sample-lot traceability scope.
Release Status
Do not assume one route for every model
Buyer Review
Backlash method, run-in state, no-load torque, stiffness expectation, noise observation, and smooth low-speed motion.
Artifact to Request
Backlash measurement method, sample acceptance table, no-load torque check, run-in note, and buyer limits.
Release Status
Needs measured sample data
Buyer Review
Envelope, motor pilot, hollow bore, output flange, fastener access, tolerances, and NDA needs before STEP release.
Artifact to Request
Closest reference STEP or PDF, revision note, restricted-drawing release rule, and engineering contact path.
Release Status
Released by engineering check
Buyer Review
Inspection fields, packing method, destination paperwork, batch labeling, sample scope, and repeat-order controls.
Artifact to Request
Outgoing QC checklist, packaging/export record example, batch traceability field, and approved shipping constraints.
Release Status
Align before PO
| Evidence Area | Buyer Review | Artifact to Request | Release Status |
|---|---|---|---|
| Machining route | Tooth profile, pin wheel, eccentric shaft, housing datum, bearing fit, and output interface reviewed as one reducer system. | Process photos, CTQ dimension list, approved 2D drawing, CMM or critical-dimension record when available. | Requires model-family approval |
| Material and heat treatment | Which material route and hardness target apply to this model instead of a generic catalog claim. | Material route note, heat-treatment target, hardness inspection field, and sample-lot traceability scope. | Do not assume one route for every model |
| Backlash and motion check | Backlash method, run-in state, no-load torque, stiffness expectation, noise observation, and smooth low-speed motion. | Backlash measurement method, sample acceptance table, no-load torque check, run-in note, and buyer limits. | Needs measured sample data |
| Drawing and revision control | Envelope, motor pilot, hollow bore, output flange, fastener access, tolerances, and NDA needs before STEP release. | Closest reference STEP or PDF, revision note, restricted-drawing release rule, and engineering contact path. | Released by engineering check |
| Outgoing QC and export pack | Inspection fields, packing method, destination paperwork, batch labeling, sample scope, and repeat-order controls. | Outgoing QC checklist, packaging/export record example, batch traceability field, and approved shipping constraints. | Align before PO |
No certificate or test result should be displayed until approved. Keep the page useful by showing the review path, then attach real evidence during RFQ or after factory approval.
CAD / STEP Data Pack
Use this reducer family request when your team needs a model file, envelope drawing, or engineering data before committing layout space. We verify the target family, revision, and release constraints first so buyers do not design around the wrong CAD file.
Confirm released model files, closest reference family, and file-release constraints before CAD freeze.
Align motor pilot, output flange, hollow bore, cable route, bolt circle, and axial envelope early.
Request backlash method, run-in note, inspection fields, and sample acceptance data for the selected family.
Inquiry Email
Best for sending NDA terms, drawings, or a specification sheet.
Instant Chat
+8618857971991
Best for quick model availability and file-release checks.
Submit the minimum engineering context needed for model-file screening and revision-safe follow-up.
Direct RFQ
The form keeps this product family attached to the inquiry so sales engineering can review ratio, torque, backlash, interface, quantity, and delivery assumptions in one thread.
The core offer is reducer sourcing and OEM reducer customization. Motor, driver, brake, encoder, and actuator integration details can be reviewed as part of the buyer joint package.
The comparison is strongest in joints where shock-load margin, compact torque density, stiffness, and low backlash must be balanced against harmonic flexspline fatigue risk.
Engineering Route
Compact Humanoid Cycloidal Reducer should lead to a clear application review, DFM check, prototype evidence plan, and RFQ handoff instead of stopping at a catalog comparison.
Check reducer architecture, model family, envelope class, and CAD availability before the quote is treated as final.
Review the machine or robot axis context so torque, shock, backlash, stiffness, and validation risk stay tied to real use.
Move from fit review into DFM, sample validation, inspection records, packaging, and repeat-order control.
Use these links when the buyer is ready to send requirements, compare directories, or review sourcing guidance.
Inquiry Email
Include ratio, torque, backlash, interface drawings, quantity plan, and destination terms.
Instant Chat
+8618857971991
Use chat for quick routing; drawings and technical details can move to email.
