Die Casting Process and Die Casting Service

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Die Casting Process and Die Casting Service

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Die Casting Process and Die Casting Service

Material:ADC12 (Equivalent to A383)

Finish:Red Anodizing

Description

Rollyu Precision manufactures custom aluminum motor bearing housings using high-pressure die-casting and precision CNC machining. Designed for electric motors and drive systems, these housings ensure accurate shaft alignment, reduce vibration, and support high-speed bearing performance.

We work with robust aluminum alloys such as A380 and ADC12, offering excellent strength-to-weight ratio, thermal conductivity, and corrosion resistance. Our process includes in-house mold design, tooling, and tight-tolerance finishing to meet critical dimensional and mechanical requirements.

Surface treatment options include anodizing, powder coating, and chromate conversion, tailored to fit your application’s functional and aesthetic needs. Each housing is fully inspected using coordinate measuring machines (CMM), thread gauges, and material testing equipment to ensure long-term reliability and assembly readiness.

These die-cast bearing housings are widely used in industrial electric motors, HVAC fans, robotics, automation equipment, EV power systems, and household appliances.

For custom aluminum bearing housing solutions that meet your exact specifications, contact Rollyu Precision today.

Process

Custom precision aluminum motor bearing housings are manufactured through high-pressure die casting and tailored mold design. The process ensures accurate bearing alignment, thermal conductivity, and structural integrity. After CNC machining critical surfaces, finishes like anodizing or powder coating enhance corrosion resistance. Ideal for electric motors in robotics, automation, and industrial systems, these housings deliver tight tolerances, high strength, and consistent quality in every production run.

Design Consultation & Engineering Analysis	Requirement Review	Client specifications, CAD models, and functional requirements for motor alignment, bearing fit, and heat dissipation are analyzed.
	DFM & FEA Simulation	Design for Manufacturability (DFM) and Finite Element Analysis (FEA) are used to optimize wall thickness, bearing seat precision, and stress distribution.
	Custom Mold Design	Tooling engineers design the die with core-cavity inserts, sliders, and venting features to ensure proper aluminum flow and part ejection.
Precision Tooling Fabrication	CNC Mold Machining	Core and cavity sections are CNC-machined from H13 tool steel, then EDM-finished for complex geometries like bearing slots and cable passages.
Precision Tooling Fabrication	Mold Hardening	Heat treatment and surface nitriding enhance mold durability for long production runs.
High-Pressure Die Casting	Material Selection	Commonly used aluminum alloys include A380, ADC12, and AlSi10Mg, offering an ideal balance of thermal conductivity, strength, and machinability.
	Casting Process	Molten aluminum (approx. 660°C) is injected into the mold under high pressure (1,000–2,500 psi) for accurate replication of internal bearing cavities and structural features.
	Rapid Cooling	Controlled solidification in the die minimizes porosity and enhances dimensional accuracy.
Post-Casting Operations	Trimming & Deflashing	Flash and gate remnants are removed with trim dies or CNC machining.
Post-Casting Operations	CNC Secondary Machining	Bearing bores, dowel holes, and precision mounting surfaces are finished to exact tolerances (typically ±0.01 mm) for optimal motor shaft alignment and fit.
Surface Finishing & Protection	Anodizing	Improves corrosion resistance and electrical insulation properties—essential for motor assemblies.
	Powder Coating / Painting	Optional for enhanced durability and branding.
	Deburring & Blasting	Prepares parts for assembly and improves surface consistency.
Quality Control & Inspection	CMM Inspection	Ensures critical dimensions like bearing seats, bolt holes, and alignment features meet specification.
	Material Certification	Alloy composition and mechanical strength tests are documented.
	Balance & Concentricity Testing	Optional for rotating motor housing assemblies.
Packaging & Delivery	Protective Packing	Anti-corrosion bags and custom trays protect precision-machined surfaces.
Packaging & Delivery	Global Logistics	Documentation includes inspection reports, RoHS/REACH compliance, and Certificates of Conformance.

Applications

The Custom Precision Aluminum Motor Bearing Housing—produced via die casting and supported by mold design services—is used in a wide range of mechanical, electrical, and industrial systems where compact, durable, and thermally efficient motor integration is required.

Industry	Applications	Application Examples
Robotics & Automation	Servo and Stepper Motor Housings	Precision-machined housings support accurate shaft alignment and thermal control in robotic joints and automated systems.
	Actuator and Drive Unit Casings	Provide structural support and heat dissipation for linear or rotary actuators in robotic arms, AGVs, and assembly lines.
	Sensor and Encoder Integration	Custom ports and brackets allow seamless mounting of feedback systems for position and torque control.
Industrial Motors & Machinery	Pump and Compressor Motors	Durable, corrosion-resistant enclosures for electric motors in harsh industrial environments.
	Fan and Blower Motor Housings	Lightweight casings enhance cooling efficiency while maintaining structural integrity.
	Gearbox Interfaces	Bearing housings serve as transition points between electric motors and gear reducers.
Electric Vehicles & Mobility Devices	Motor Housings for E-Bikes, Scooters, and AGVs	Lightweight aluminum structures enhance battery efficiency and reduce drivetrain wear.
Electric Vehicles & Mobility Devices	Cooling-Integrated Designs	Built-in fins and airflow channels improve heat management in compact mobility systems.
Aerospace & Defense	Drone Motor Mounts	Precision balance and vibration control for brushless motors in UAVs and autonomous platforms.
Aerospace & Defense	Tactical System Components	Lightweight, ruggedized housings for mobile power systems and positioning equipment.

Specifications

Part number: RY-H0062

Materials Available: Aluminum alloy, etc.

Tolerance: ±0.05mm

Material Certificates: Available

MOQ:1000 pieces

Drawing Accepted: PRO/E, Auto CAD, SolidWorks, UG, CAD / CAM / CAE, PDF

RoHS/REACH Report: Available

Certificate: ISO9001:2015, ISO13485:2016

Non-disclosure agreement: Strictly sign a confidentiality agreement NDA to give you peace of mind

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Email Us: mitani@rymachining.com

FAQ

Why use aluminum die casting for motor bearing housings?

Aluminum die casting offers tight dimensional accuracy, high strength-to-weight ratio, and excellent thermal conductivity, making it ideal for motor bearing housings. The process enables high-volume, cost-efficient production with complex geometries, such as internal channels, cooling fins, and mounting features.

What aluminum alloys are commonly used in die-cast bearing housings?

We typically use ADC12, A380, or AlSi9Cu3 alloys for motor housings. These alloys provide a good balance of machinability, corrosion resistance, and mechanical strength, suitable for both enclosed and open-environment motor applications.

What tolerances and surface finishes can be achieved in die-cast housings?

Standard die casting can achieve tolerances of ±0.10 mm, and tighter specs can be achieved through secondary CNC machining. Surface finish options include:

As-cast (matte texture)
Shot blasting or bead blasting
CNC machining of precision mating areas
Anodizing, chromate conversion, or powder coating for enhanced appearance and protection

What industries commonly use custom aluminum bearing housings?

These housings are widely used in:

Electric motorsfor automation, robotics, and HVAC systems
Pumps and compressors
Power tools and industrial machinery
Medical and diagnostic equipment
Die casting offers the reliability and repeatability required for OEM applications demanding both performance and volume.

Outstanding Achievements and Partnerships

We take pride in our outstanding achievements and strong partnerships. Our commitment to great communication, service, and integrity has led to excellent results.

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Die Casting Process and Die Casting Service - Rollyu

Die Casting Process and Die Casting Service

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Email Us: mitani@rymachining.com

FAQ

Outstanding Achievements and Partnerships

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