Aluminum die casting for Motor Housings

January 16, 2026

Motor housings are core structural and protective components in electric motors and drive systems. They provide mechanical support, protect internal components from environmental factors, assist with heat dissipation, and ensure proper alignment of the rotor and stator during operation.

Aluminum die casting is widely used for motor housings due to its excellent thermal conductivity, lightweight properties, and ability to form complex geometries with high dimensional accuracy suitable for mass production.


Manufacturing Process

  • High-pressure die casting (HPDC)

  • In-house mold design and tooling development

  • CNC machining of mounting surfaces, bearing seats, and sealing interfaces

  • Optional surface treatments: shot blasting, powder coating, anodizing, or e-coating


Design & Performance Features

  • Lightweight aluminum structure

  • Excellent heat dissipation for motor performance and durability

  • High dimensional accuracy and consistency

  • Good structural rigidity and vibration resistance

  • Corrosion resistance with appropriate surface treatment

  • Suitable for automated assembly and high-volume production


Materials

  • ADC12 / A380 aluminum alloy – standard choice for good castability and thermal performance

  • A356 aluminum alloy – available when higher mechanical strength is required

Material selection depends on motor type, operating temperature, and mechanical load conditions.


Typical Applications

  • Electric vehicle (EV) drive motors

  • Industrial electric motors

  • Servo and stepper motors

  • Robotics and automation motors

  • Household appliance motors

  • Power tools and equipment motors


Quality Control

  • X-ray inspection for internal casting integrity

  • CMM dimensional measurement

  • Visual and surface quality inspection

  • Thermal and mechanical property verification when required


Why Choose Us

  • Integrated die casting and tooling capability

  • DFM (Design for Manufacturing) support in early development

  • Prototype sampling and mass production capability

  • Experience supplying motor housing components

  • Custom manufacturing based on customer drawings and specifications


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Small Molded Parts with in Days

Our complete CNC aluminum service will accompany your aluminum machining project from the prototype construction to the end aluminum parts manufacturing.

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Eight Processes

Mold Manufacturing

Mold Manufacturing

High-accuracy aluminum and zinc alloy parts produced with state-of-the-art die casting machines ranging from 88T to 2000T.

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Die Casting

Die Casting

With machines from 88T to 2000T, we produce high-accuracy aluminum and zinc alloy parts efficiently.

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CNC Machining

CNC Machining

Over 50 CNC machines, including 3-axis, 4-axis, and 5-axis, deliver precise and efficient machining for complex components.

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Injection Molding

Injection Molding

A combination of manual and automated deburring techniques ensures smooth, defect-free surfaces for optimal performance.

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3D Printing

3D Printing

Post-casting reshaping and alignment guarantee dimensional accuracy and structural integrity.

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Chemical Pretreatment

Chemical Pretreatment

Specialized surface treatments enhance corrosion resistance and improve coating adhesion.

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Surface Treatment

Surface Treatment

Comprehensive finishing solutions, including powder coating, spray painting, and UV coating, ensure superior durability and aesthetics.

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Quality Inspection

Quality Inspection

Strict quality checks ensure compliance with ISO 9001 and IATF 16949 standards.

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Get in Touch

If you cannot find a suitable product, please leave a message or contact us. We have a dedicated technical team to serve you.

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