Share the envelope, shaft, flange, torque-speed target, and drawing status so engineering can confirm the right outline drawing, STEP/IGES envelope, or custom interface path.
Gated CAD Access
Public instant downloads often create wrong-fit samples because the same nominal diameter can ship with different gearbox length, shaft revision, cable exit, encoder stack, and bearing support. This request page keeps the CAD file tied to a real RFQ context.
CAD Download Gate
Engineers want a STEP model quickly, but the wrong public file creates purchasing and sample risk. This gate keeps each file matched to the buyer signal, mechanical revision, and approval stage.
| Gate | Buyer Gets | Minimum Input | Best Route |
|---|---|---|---|
| Public product shortlist | Diameter family, application fit direction, and a safe first-pass 2D outline discussion. | Target OD, maximum length, voltage, loaded output RPM, and expected torque range. | Product pages, diameter shortlist, or WhatsApp fit check. |
| Engineering email gate | STEP, IGES, PDF, or 2D drawing package tied to a named drawing revision. | Company email, CAD software, mating drawing revision, shaft/flange limits, duty, and quantity. | Email template with drawings and CC recipients. |
| WhatsApp fast-fit gate | Quick platform confirmation before the buyer invests time in a full CAD exchange. | Photo or sketch, OD/length, shaft style, voltage, loaded speed, torque, and schedule. | WhatsApp thread, then form or email when files are needed. |
| NDA / custom CAD gate | Custom shaft, flange, encoder, Hall, connector, or cable-exit review before sample build. | NDA owner, controlled drawing path, mating CAD, tolerance priority, and radial/axial load. | Contact form or controlled buyer release process. |
| Sample approval evidence gate | CAD file scope aligned with datasheet, inspection, compliance, and validation records. | Pilot approval stage, destination market, quality evidence need, and sample acceptance criteria. | Structured form routed with RFQ and quality review. |
Request Package Builder
A purchasing screen, enclosure layout, custom shaft review, and pilot-production approval do not need the same file package. Pick the smallest useful package first, then add datasheet and validation fields when the project is close to sample approval.
Diameter & Product Shortlist
Before requesting a STEP model, shortlist the likely platform by diameter, torque class, feedback need, and application. This prevents engineering from sending a mechanically correct file for the wrong gearbox stack or motor family.
Use when max OD, current draw, noise, and cable routing are the first constraints.
Use when a standard compact platform may work but shaft, flange, ratio, or duty needs review.
Use when torque reserve, metal gear stages, shaft support, or thermal duty drives the decision.
Engineering Input
Use this form when your team needs a model for interference checks, enclosure layout, shaft proposal, or supplier-side DFM review.
CAD + RFQ Template
Copy this into the form, email, or buyer-controlled release request when your engineering team needs a useful model instead of a generic envelope.
CAD + RFQ data pack: - Application / device module: - Current design stage: concept / EVT / DVT / pilot / production replacement - CAD software and preferred format: STEP / IGES / PDF / 2D drawing - Mating drawing owner and revision: - Target product page or diameter shortlist: - Target OD / maximum length: - Shaft / flange / mounting face / cable exit: - Rated voltage and driver current limit: - Loaded output RPM, continuous torque, peak or stall torque: - Gear ratio target or torque-speed priority: - Duty cycle, life target, noise, backlash, and temperature limit: - Encoder / Hall / connector / cable requirements: - NDA, buyer-controlled drawing, or file release route: - Prototype quantity, annual volume, and target sample date: - Destination market and compliance notes: - Quality evidence or sample approval files needed with CAD:
Wrong CAD Exchange Risk
| Risk | Failure Mode | Control |
|---|---|---|
| Same diameter, wrong gearbox stack | A 16mm envelope may fit the enclosure while the selected ratio, stage count, or gearbox length is wrong for torque and speed. | Ask for loaded output RPM, torque, ratio target, duty cycle, and maximum length before STEP release. |
| Shaft or flange revision drift | A D-cut, keyway, thread, bearing support, or flange hole revision can pass CAD review but fail during assembly. | Tie every shared file to the mating drawing owner, revision, shaft detail, and tolerance priority. |
| Feedback or cable exit omitted | Encoder, Hall, connector, strain relief, or cable routing can change the mechanical boundary after the CAD file is approved. | Name feedback, harness, pinout, connector direction, and PCB clearance in the first request. |
| CAD approved without load validation | A file that fits mechanically may still overheat, wear quickly, sound too loud, or miss backlash targets. | Keep datasheet, torque-speed, noise, backlash, life, and quality evidence in the same RFQ thread. |
| Uncontrolled file release | Teams may compare an old supplier STEP file against a newer buyer drawing or send restricted models through the wrong channel. | Declare NDA, file owner, release channel, and revision naming before exchanging controlled drawings. |
Workflow
Release Conditions
| Request Type | Needed Input | Expected Output |
|---|---|---|
| Standard outline drawing | Diameter candidate, max length, shaft style, flange pattern, and cable exit. | 2D outline or PDF drawing for early enclosure review. |
| STEP / IGES envelope | Mating CAD status, drawing revision, gearbox length, connector boundary, and target product family. | Revision-aware envelope model for interference checks. |
| Custom shaft or flange CAD | Mating part drawing, tolerance priority, radial/axial load, and prototype quantity. | Custom interface review path before sample build. |
| Regulated or export-sensitive program | Destination country, RoHS/REACH or buyer file requirements, noise/backlash/life concern. | CAD scope tied to validation and document package assumptions. |
CAD Is Not Final Validation
| CAD Confirms | Still Needs RFQ / Test Review | Buyer Action |
|---|---|---|
| Mechanical fit | Torque at loaded speed, duty cycle, thermal rise, and stall/peak events. | Keep performance data in the same RFQ thread. |
| Shaft and mounting envelope | Actual mating load, tolerance stack, radial/axial force, and assembly clearance. | Attach the mating drawing or mark dimensions still pending. |
| Cable/connector exit direction | Harness length, pinout, strain relief, PCB clearance, and feedback signal requirement. | Name Hall, encoder, cable, and connector needs before sample PO. |
| A shared drawing revision | Noise, backlash, life, compliance, and outgoing inspection acceptance criteria. | Align validation evidence before freezing pilot production. |
Datasheet Fields
CAD review is strongest when the same request also names the datasheet values that must be confirmed for the buyer file, sample approval, or internal design release.
| Datasheet Area | Fields To Confirm | Why It Matters |
|---|---|---|
| Electrical data | Rated voltage, no-load speed/current, loaded speed/current, stall current, driver current limit, and feedback option. | Prevents a fit-approved CAD model from moving forward with the wrong winding or control assumption. |
| Gearbox data | Gear ratio, stage count, gear material, backlash target, rated torque, peak/stall condition, grease, and expected life. | Keeps torque density, noise, wear, and cost assumptions visible before sample approval. |
| Mechanical interface | OD, gearbox length, shaft length/diameter, D-cut/keyway/thread, flange pattern, bearing support, cable exit, and connector space. | Makes the shared 2D/STEP file useful for enclosure checks and assembly clearance review. |
| Validation evidence | Noise, backlash, life-test, incoming/outgoing inspection, RoHS/REACH scope, and buyer-specific approval records. | Aligns the CAD exchange with the documents a buyer may need before pilot or mass production. |
Available File Paths
| File Path | Best Use | Needed Input |
|---|---|---|
| 2D outline drawing | Early envelope review, mounting space checks, and shaft/flange discussion. | OD, max length, shaft style, flange pattern, cable exit, and revision note. |
| STEP / IGES envelope model | SolidWorks, Inventor, Creo, or Fusion interference checks before prototype freeze. | Product family, diameter candidate, output shaft, gearbox length, connector constraints. |
| Custom shaft or flange proposal | Projects where a standard platform needs a custom output interface. | Mating part drawing, radial/axial load, tolerance priority, and sample quantity. |
| Validation and compliance file scope | Buyer-side approval gates before pilot production or regulated equipment review. | Destination market, RoHS/REACH need, noise/backlash target, and life-test concern. |
Review Gates
The selected 6mm-42mm standard or custom drive family can meet the envelope.
Torque, speed, ratio, duty cycle, and stall/peak cases are not underspecified.
Shaft, flange, bearing support, cable exit, connector, and feedback options are named.
The buyer and supplier are working from the same drawing or CAD revision.
Before CAD Freeze
A STEP file confirms installation fit, but it does not prove the motor can survive the load case. Keep torque margin, thermal rise, gear material, noise, backlash, duty cycle, and validation criteria in the same review thread.
NDA / Revision Control
For buyer-controlled programs, the CAD exchange should name the file owner, drawing revision, product family, and document scope before custom files move between teams.
If your company requires NDA handling or a controlled drawing portal, note that requirement in the request before sending restricted files.
Name the mating drawing revision, enclosure CAD status, and mechanical boundary that must not change so the returned model can be traced.
Quality evidence, compliance scope, and validation records should be requested with the same product family and drawing revision.
FAQ
For standard outline drawings, engineering can usually respond quickly. For STEP, IGES, custom shaft, or flange models, project context is needed so the shared file matches the intended motor family, shaft revision, and mechanical boundary.
Send the current envelope and mark pending dimensions clearly. Engineering can return a provisional platform direction, then update the CAD exchange after the mechanical interface is frozen.
No. CAD confirms mechanical fit. Torque margin, thermal rise, noise, backlash, gear material, grease, and life target still need RFQ and sample validation review.
Use PDF or 2D outline drawings for early layout review. Request STEP or IGES when your team is ready to run assembly interference checks and preserve revision control.
Yes, the request can include datasheet values such as voltage, speed, torque, ratio, current, backlash, noise, gear material, and mechanical interface fields. Final values still depend on winding, gearbox stack, duty cycle, and validation scope.
State the NDA or controlled-release requirement in the request. Engineering can then align the file exchange path before buyer drawings, mating CAD, or custom interface files are shared.
Start with the closest diameter and duty class: 6mm-12mm compact motors for small envelopes, 10mm-16mm actuator programs for OEM mechanisms, and 16mm-42mm torque platforms when metal gears, shaft support, or thermal duty become critical.
Next Step
Engineering can route your request faster when the CAD need, torque-speed case, and sample quantity are visible together.
