QDD Motors logoQDD Motors
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QDD Motors logoQDD Motors
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QDD Motors logoQDD Motors

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

Inquiry Email

[email protected]

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

Instant Chat

+86 188 5797 1991

Request CAD Model via WhatsApp

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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
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© 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.
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CNC Machining & Tooling

Precision CNC turning, milling, tooling, and inspection support for motor housings, hollow shafts, bearing seats, flanges, gear parts, and robot joint actuator hardware.

Best Fit For:Ideal for sourcing and mechanical engineers who need controlled dimensions on motor interfaces that affect bearings, encoders, runout, sealing, and vibration.

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.

Precision CNC Machined Parts

Capability Highlights

  • 5-axis CNC machining for motor housings, flanges, and joint hardware
  • Bearing-seat, runout, concentricity, and surface-finish control
  • CMM, inline probing, fixture, and tooling documentation support

Typical Engagement Scope

  • Motor housings and flanges
  • Precision rotor shafts
  • Custom gear components
  • Hollow-shaft joint hardware and connector features

Execution Focus

  • GD&T control for bearing seats, pilot diameters, bolt circles, and shaft interfaces
  • Surface finish, anodizing, passivation, heat treatment, and coating requirements
  • Fixture strategy, first-article inspection, CMM reports, and Cpk expectations
  • DFM review for manufacturability, tolerance stack-up, and cost reduction

Program Evaluation Matrix

Program MetricTypical RangeProcurement Value
Machining Precision+/-0.005 mm class for selected critical dimensionsCritical for bearing seat alignment and reducing vibration/noise in high-speed applications.
Runout ControlBuyer-defined shaft and bearing-seat targetRunout affects encoder accuracy, bearing life, NVH, and high-speed motor stability.
Surface FinishRa target by sealing, bearing, or cosmetic surfaceSurface finish can determine seal life, bearing fit, corrosion behavior, and assembly repeatability.
Inspection EvidenceFAI, CMM report, control plan, Cpk on CTQ dimensionsBuyers need measurable proof that the prototype geometry can repeat in production.

RFQ Preparation Checklist

  1. Provide 3D STEP files and 2D toleranced drawings with revision number
  2. Mark critical dimensions, GD&T, surface finish, coating, and material requirements
  3. Define bearing-seat, runout, concentricity, flatness, and thread requirements
  4. State sample quantity, annual volume, inspection-report needs, and packaging constraints
  5. Share assembly context if the part affects encoder alignment, sealing, or vibration

Risk and Mitigation

  • Out-of-tolerance runout: Inline probing and automated 100% CMM verification for critical dimensions.
  • Tolerance stack-up causes assembly bind: Review the part in actuator assembly context and flag GD&T conflicts before machining samples.
  • Surface treatment changes final fit: Account for anodizing, passivation, coating, or heat-treatment effects in the final drawing and inspection plan.

Related Products

High Precision Motor Housing
High Precision Motor Housing
Strain Wave Gear CNC
Strain Wave Gear CNC

Buyer FAQ

Can you machine exotic alloys?

We routinely machine aerospace-grade aluminum, titanium, and various stainless steel alloys.

Do you provide CMM or first-article inspection reports?

Yes. For critical motor and actuator parts, we can align on FAI, CMM, Cpk, and outgoing inspection records before the sample order.

What drawing details reduce CNC quote loops?

Include STEP, 2D tolerances, material, finish, heat treatment, CTQ markings, revision number, annual volume, and inspection-report expectations.

Related Resources

  • Hollow Shaft Robot Joint Motors
  • Robot Joint Modules
  • Quality & Certifications
  • Request CNC Quote

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