What should be included in the first RFQ email?

Include screw type, target OD, lead, stroke, load target, backlash or preload requirement, material or coating needs, quantity plan, drawing or STEP availability, application, and delivery country.

How quickly can we get an actionable response?

Complete RFQs can usually be routed faster because geometry, load, material, quantity, and document expectations are clear. Exact response time depends on drawing complexity and supplier qualification requirements.

Can we discuss custom OEM requirements before PO?

Yes. We encourage pre-PO engineering clarification around long internally threaded nuts, compact actuator envelopes, material selection, heat treatment, preload, and inspection evidence.

Contact

Contact / RFQ

Share your application, target specs, and quantity plan. We will respond with practical engineering and sourcing support.

Direct Engineering Contact

For fastest response, please use your company email to send us your requirements. We support attachments such as STEP/IGES CAD files, NDAs, and technical specification PDFs.

Inquiry Email

[email protected]

Email app

Include target OD, lead, stroke, load, quantity, and delivery country.

WhatsApp Engineering

+8618857971991

Chat on WhatsApp

Best for quick RFQ clarification and drawing-review coordination.

RFQ Checklist Before You Send

Required Item	Example	Why It Helps
Screw type and architecture	Inverted, standard planetary, micro, or custom actuator set	Quickly narrows the correct manufacturing route.
OD, lead, stroke, and envelope	8 mm OD / 2 mm lead / 35 mm stroke / compact joint package	Confirms whether the inverted layout can fit the actuator.
Load, duty cycle, and precision target	Dynamic/static load, backlash/preload, stiffness, speed	Defines life, heat, preload, and inspection requirements.
Drawing, STEP, or sample availability	PDF drawing, STEP model, NDA request, or physical sample	Enables DFM review and prevents revision mismatch.
Quantity stage and delivery country	Prototype, EVT/DVT/PVT, small batch, mass production	Aligns quotation basis, inspection package, and shipment plan.

What Happens After Inquiry

Engineering pre-check for model fit and data completeness.
Quote direction with lead-time assumptions and risk notes.
Sample scope alignment and validation acceptance criteria.
Production and delivery planning for approved programs.

What to Send by Project Type

Project Type	Minimum Useful Inputs	Optional Evidence	Best Internal Link
Humanoid robot joint screw	Joint type, available OD/length, stroke, force, speed, impact assumptions, preload/backlash, and quantity stage.	Limb CAD, motor datasheet, bearing layout, and validation fixture concept.	Humanoid actuators
Long nut or internal thread project	Nut drawing, thread profile, lead, stroke, wall thickness, material, heat treatment, and datum scheme.	Required lead report, roughness target, hardness target, and matched-set assembly plan.	Internal grinding
Custom actuator screw set	PDF drawing, STEP, sample photos, load profile, end features, material, coating, delivery country, and NDA need.	CTQ list, previous failure mode, preferred acceptance criteria, and buyer document template.	Custom manufacturing
Supplier qualification	Required certificate scope, document package, inspection records, audit requirements, and forecast or annual volume.	Buyer quality manual excerpts, packaging standard, and incoming inspection plan.	Quality & inspection

Fast Routing by Inquiry Type

Custom Drawing RFQ

Best when you already have a PDF drawing, STEP model, NDA, or physical sample for a proprietary actuator screw set.

Prototype Review

Best when EVT/DVT timing, acceptance criteria, load testing, and iteration risk need to be aligned before purchase order.

Supplier Qualification

Best when procurement needs traceability, inspection records, certificate scope, export packaging, and repeat-order controls.

Common Clarification Questions

Can I send a rough requirement before final drawings are ready?

Yes. Send your current assumptions first, then mark pending items clearly so we can return a provisional quote scope.

How should we handle engineering changes after sample approval?

Use a revision-controlled change request with effective lot and impact scope agreed by both teams.

Can we align on compliance files before mass production?

Yes. Please list required document types in the RFQ stage so they are included in validation and delivery planning.

Suggested First RFQ Email Format

If your team needs a fast start, use this structure in the first email. It improves quote precision and reduces clarification cycles.

Project background and application scenario.
Screw target: inverted or standard architecture, OD, lead, stroke, and overall envelope.
Performance target: dynamic/static load, backlash/preload, stiffness, speed, duty cycle, and life expectation.
Manufacturing data: material, heat treatment, coating, drawing or STEP availability, quantity stage, destination, and target ship date.

What You Should Review Before Sending RFQ

Products for architecture-level selection and model-family fit.
Solutions / Applications for scenario-specific constraints and validation priorities.
OEM Capabilities for design collaboration, quality controls, and delivery process.
Quality & Inspection for document packages and sample acceptance evidence.
Internal Thread Grinding if your project depends on a long internally threaded nut.
Engineering Blog for practical checklists you can copy into buyer workflows.

Typical First Response Package

Output	Purpose	Buyer Action
Architecture and manufacturing direction	Narrow inverted, standard planetary, micro, or custom component routes against envelope and load assumptions.	Confirm baseline screw path before cost-detail discussion.
RFQ clarification list	Close data gaps that affect pricing and lead-time accuracy.	Return missing values and drawing references in one reply.
Validation recommendation	Define sample test scope and acceptance evidence for technical sign-off.	Align internal engineering and procurement gates before PO.