OEM Precision Metal Stamping Parts Motor Mounting Bracket

The following factors should be considered when selecting the material of the motor bracket:

Mechanical properties

Strength requirements: Large or high-power motors require high-strength materials, such as cast iron and carbon steel, to withstand vibration, torque and other forces.
Rigidity requirements: To ensure the accuracy of the motor shaft alignment, the bracket must be rigid enough. For example, the motor bracket in machine tool equipment has high rigidity requirements. Aluminum alloy and stainless steel are better choices.
Fatigue performance: Frequent start and stop of the motor causes the bracket to be subjected to alternating stress, which requires materials with good fatigue resistance, such as high-quality alloy steel. For example, the motor bracket of the automobile engine cooling fan requires fatigue resistance.

Physical properties

Density and weight: In areas with weight restrictions (such as aerospace and electric vehicles), aluminum alloys with low density are better choices.
Thermal expansion coefficient: The heat generated by the motor will cause the bracket to expand. In precision instruments and equipment, materials with low thermal expansion coefficients should be selected, such as ceramic materials or low expansion coefficient alloys.

Chemical properties

Corrosion resistance: In humid and corrosive environments, such as chemical workshops and marine ship environments, motor brackets require materials with good corrosion resistance, such as stainless steel and hot-dip galvanized carbon steel.
Chemical stability: The material of the motor bracket should avoid reacting with chemical substances in the environment. In an environment with organic solvents, materials with good chemical stability should be selected.

Cost factors

Material cost: Cast iron and carbon steel are relatively low in cost, while stainless steel and high-performance engineering plastics are high in cost. Civil motor equipment usually considers low-cost materials.
Processing cost: Aluminum alloys and some engineering plastics have good processing performance and can reduce processing costs. High-strength alloy steel is difficult to process and has high costs.

Other factors

Electromagnetic compatibility: In electronic equipment or environments sensitive to electromagnetic interference, non-ferromagnetic materials such as aluminum alloys or certain engineering plastics may be selected.
Appearance requirements: In situations where there are appearance requirements, the material and surface treatment method should be considered. For example, the motor bracket in consumer electronic products may choose materials with good surface quality.