QDD Motors logoQDD Motors
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QDD Motors logoQDD Motors
WhatsApp
QDD Motors logoQDD Motors

Industrial motion manufacturer supporting custom engineering, strict quality control, and global delivery.

Inquiry Email

[email protected]

Email app

Include target torque/speed, quantity, and delivery location.

Instant Chat

+86 188 5797 1991

Request CAD Model via WhatsApp

Opens a direct WhatsApp thread with the RFQ message prefilled.

Products
  • Quasi-Direct Drive (QDD) Actuators
  • Robot Joint Motor Modules
  • Hollow Shaft Joint Motors
  • High Torque BLDC Motors
  • Low Ratio Geared Motors
  • Standard AC Motors
  • Stainless Steel Washdown Motors
Solutions
  • Exoskeleton Power Solutions
  • Quadruped & Humanoid Joints
  • Humanoid Robot Actuators
  • Quadruped Robot Actuators
  • Robotic Arm Joint Solutions
  • Mobile Robot Drive Systems
  • Medical Rehabilitation Motors
  • Harsh Environment
OEM Capabilities
  • Stator & Rotor Lamination
  • CNC Machining & Tooling
  • Assembly & Testing
  • Custom Engineering
Resources
  • Blog
  • About
  • Quality & Certifications
  • Contact / RFQ
  • Privacy Policy
  • Cookie Policy
  • Terms of Service
© 2026 QDD Motors. All Rights Reserved.|QDD Motors supports OEM robot joint motor programs with engineering review, manufacturing coordination, quality records, and export delivery planning.
Contact

Contact QDD Motors

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

Corporate Email

For official POs and technical drawings

[email protected]

WhatsApp Direct Line

Fast response for CAD models and specs

+86 188 5797 1991

Factory Location

Shenzhen / Dongguan Hub

Guangdong Province, China

Smart RFQ Builder

Fill out the core engineering inputs below. The request goes directly to our engineering inbox, and you can still use the email fallback for CAD, BOM, drawings, or datasheets.

File Attachments (CAD / BOM / Specs)

Because we value your IP security, this form does not upload CAD or BOM files to our web server. Use the email fallback if files need to travel with the first request. Please attach STEP files, 2D drawings, BOM sheets, torque curves, or PDF specs directly in email.

Open Email InsteadRequest CAD Model & API Docs via WhatsApp

RFQ Checklist Before You Send

Required ItemExampleWhy It Helps
Target motor familyQDD actuator / hollow-shaft joint motor / IEC-NEMA motorQuickly narrows viable models and quote range.
Torque at speed45 N·m peak, 12 N·m continuous, 8:1 gear ratioPrevents over-reliance on holding torque only.
Mechanical interfaceHollow shaft encoder, flange, CAN FD, connector drawing revisionAvoids sample mismatch and assembly rework.
Quantity planPrototype qty + annual forecastImproves lead-time and pricing accuracy.
Destination and termsCountry, Incoterm, requested ship dateAligns packaging, documents, and shipping plan early.

What Happens After Inquiry

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

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.

  1. Project background and application scenario.
  2. Motor target: frame size candidate, torque at speed, electrical window.
  3. Mechanical interface: shaft, flange, connector, drawing revision.
  4. Commercial scope: prototype quantity, annual forecast, 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.
  • Engineering Blog for practical checklists you can copy into buyer workflows.
  • QDD Actuators for gear ratio, peak torque, reflected inertia, backlash, and CAN FD/API documentation screening.
  • Harsh Environment Solutions when your inquiry includes IP rating, washdown chemicals, seal materials, or stainless housing constraints.

Typical First Response Package

OutputPurposeBuyer Action
Model and architecture directionNarrow viable options against torque-speed and interface assumptions.Confirm baseline model path before cost-detail discussion.
RFQ clarification listClose data gaps that affect pricing and lead-time accuracy.Return missing values and drawing references in one reply.
Validation recommendationDefine sample test scope and acceptance evidence for technical sign-off.Align internal engineering and procurement gates before PO.