Aluminum Alloy Die-Casting Service Parts for Motor Shell Manufacturing

Product Advantage

• Superior Heat Dissipation for Motor Longevity: The aluminum alloy’s high thermal conductivity (160-180W/(m·K)) and optimized shell structure (integrated heat fins, internal heat dissipation ribs) accelerate heat transfer from motor windings to the outside. For a 10kW industrial motor, this reduces operating temperature by 15-20℃, extending motor service life by 3-5 years and reducing downtime due to overheating by 40%.

• Lightweight Design & Energy Efficiency: With a density of 2.7g/cm³, the aluminum shell is 65% lighter than cast iron shells and 30% lighter than stainless steel shells. For EV drive motors, this weight reduction lowers vehicle curb weight by 50-80kg per motor, improving EV range by 5-8km per charge and cutting energy consumption for industrial motors by 10-15%.

• High Customization Flexibility: Precision extrusion supports diverse cross-sections—cylindrical shells for standard motors, square shells for compact installation, and irregular shells with integrated mounting brackets for custom equipment. CNC machining enables precise cutouts for motor shafts, wiring ports, and sensors, with dimensional tolerance of ±0.03mm to fit non-standard motor designs.

• Industrial-Grade Corrosion & Impact Resistance: The surface undergoes 12-20μm hard anodizing (or powder coating) and passivation treatment, withstanding 1000 hours of neutral salt spray testing (ASTM B117). It resists industrial oils, coolants, and humid environments, making it suitable for factories, EV under-hoods, and outdoor HVAC systems. The alloy’s impact toughness (≥10kJ/m²) also withstands accidental collisions during installation or operation.

• Cost-Effective Mass Production: Extrusion technology enables high-volume manufacturing (output up to 600m/h) with lower tooling costs than casting. For standard motor shells, unit costs are 25% lower than cast iron alternatives. Custom designs require minimal die adjustments, with lead times as short as 7-10 working days for small-batch orders (MOQ 50 pieces).

Technical Parameters

Product Uses

1. EV Drive Motors: Cylindrical 6061-T6 aluminum shells with integrated heat fins house 5-50kW EV drive motors. The lightweight design reduces vehicle weight, while the corrosion-resistant coating withstands under-hood moisture and road salt—ideal for electric cars, buses, and trucks.

2. Industrial Servo Motors: Square 6063-T5 aluminum shells with pre-drilled mounting holes are used in 1-10kW servo motors for CNC machines and robotic arms. The compact design saves installation space, and the efficient heat dissipation ensures stable motor performance during 24/7 operation.

3. HVAC System Motors: Powder-coated aluminum shells with IP65 protection are integrated into 0.5-5kW HVAC fan motors. The corrosion-resistant surface resists indoor/outdoor humidity, and the customizable cutouts fit wiring and sensor ports—suitable for air conditioners, ventilation fans, and heat pumps.

4. Household Appliance Motors: Thin-wall (1.5-2mm) aluminum shells are used in 0.1-1kW motors for washing machines, refrigerators, and vacuum cleaners. The lightweight design reduces appliance weight by 30%, while the smooth anodized surface enhances product aesthetics.

Product Operate Guide

• Pre-Processing Preparation: Confirm the shell’s cross-section, wall thickness, and cutouts match the motor’s electrical and mechanical requirements. Clean the shell surface with isopropyl alcohol to remove oil—ensuring strong adhesion for insulation materials or gaskets.

• Assembly Steps: Insert motor windings and rotors into the shell, ensuring the shaft aligns with the shell’s shaft hole (tolerance ±0.03mm). Secure end caps with M3-M5 screws (torque 3-8N·m) and apply heat-resistant sealant to joints to prevent dust ingress. Connect wiring through pre-cut ports and test motor operation.

• Post-Assembly Check: Use an infrared thermometer to verify motor temperature (should be ≤80℃ for continuous operation). Conduct a waterproof test (for IP-rated shells) by spraying water at 1m distance for 30 minutes—ensure no water enters the shell.

Maintenance Tips: Clean the shell surface monthly with a soft cloth to remove dust. For industrial motors, inspect the anodized surface quarterly—touch up scratches with anti-corrosion paint to avoid rust. For EV motors, check mounting screws annually to prevent loosening due to vibration.

FAQ

1. Q: Can the shell be customized for high-temperature motors (e.g., 150℃ operating temperature)?

A: Yes. We offer a high-temperature version with 7075-T6 alloy and ceramic coating, which maintains 90% of mechanical properties at 150℃. Lead time for this customization is 8-12 working days.

2. Q: What is the MOQ for custom cross-section motor shells?

A: MOQ is 50 pieces for custom cross-sections (e.g., irregular shells with brackets). For standard cylindrical/square shells, MOQ is 20 pieces—we provide free die design for orders over 500 pieces.

3. Q: How to resolve shell deformation caused by motor vibration?

A: First, ensure the shell is properly mounted with anti-vibration gaskets. If deformation occurs, replace the shell with a reinforced version (thicker wall or 6061-T6 alloy) designed for high-vibration environments—our technical team can recommend suitable specifications.

4. Q: What warranty do you provide for aluminum motor shells?

A: We offer a -year warranty for the shell body (covering corrosion, deformation, and surface peeling) and a 6-year warranty for surface treatments. For manufacturing defects, we provide free replacement or rework.