Aluminum Motor Housing

Aluminum motor housing is the core structural component of electric motors. It holds the stator, protects the rotor, and dissipates heat. Our aluminum motor housing serves industrial motors, servo motors, new energy vehicle drive motors, home appliance motors, and power tools. Motor housing manufacturing demands high precision. It needs accurate dimensions for uniform air gap between stator and rotor. It also needs excellent heat dissipation to keep temperature rise within design limits during long operation. Aluminum alloy is the preferred material for motor housings because of its light weight and good thermal conductivity. Our aluminum motor housing delivers on all these requirements.

Our aluminum motor housing machining solutions vary by motor type. For water-cooled motor housings, we focus on spiral water channel or axial water channel dimensional accuracy and sealing. After machining, we conduct 0.8MPa water pressure testing for 5 minutes with no leakage. For air-cooled motor housings, we focus on cooling fin quality. We use PCD tools for high-speed milling. Fin surface roughness reaches Ra≤1.6μm. This increases heat dissipation area and ensures a clean appearance. Bearing chambers and spigots are the most critical fit areas of motor housings. We use coordinate boring machines or precision horizontal machining centers. Bearing chamber tolerance is held to H7 grade. Cylindricity is within 0.01mm. This ensures radial runout stays within allowable limits after bearing installation.

Quality control for aluminum motor housing is among our strictest processes. Every motor housing undergoes CMM inspection after machining. We focus on bearing chamber dimensions, spigot dimensions, mounting hole positions, and end face runout. For water-cooled types, we perform 100% water pressure or air pressure seal testing. For appearance, we perform 100% visual inspection. Scratches, dents, and exposed casting defects are not allowed. All inspection data is recorded in our quality management system and provided with the shipment. Each product has an independent serial number (SN code) for full traceability. Our aluminum motor housing production cycle is 30-40 days for standard orders. Repeat orders ship in 10-15 days. We accept orders starting from 1 piece. Paid samples are available. Standard warranty is 3 years. We have long-term relationships with multiple motor manufacturers. They trust our quality stability and delivery punctuality. If you need high-quality aluminum motor housing, send us your drawing or sample. We will respond quickly.