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Motor bearing material

 

The commonly used materials for motor bearings mainly include the following categories:

Bearing alloy: Bearing alloy, also known as white alloy, is mainly composed of tin, lead, antimony or other metal alloys, and has the characteristics of good wear resistance, high plasticity, good running performance, good thermal conductivity and good resistance to glue. It is suitable for heavy-duty, high-speed and other working conditions, but it has low strength and usually needs to be attached to bronze, steel or cast iron bearings.

Copper alloys: Copper alloys include tin bronze, lead bronze and aluminum bronze, among which tin bronze has the best friction reduction and is suitable for heavy-duty and medium-speed occasions; Lead bronze is suitable for high-speed, heavy-duty bearings; Aluminum bronze has high strength and hardness, and is suitable for low-speed, heavy-duty bearings.

Aluminum-based alloy: Aluminum-based bearing alloy has good corrosion resistance and high fatigue strength, which is suitable for partially replacing more expensive bearing alloys and bronze, and is suitable for occasions with light load, low speed and no impact load.

Gray cast iron and wear-resistant cast iron: This type of material has a certain degree of friction reduction and wear resistance, and is suitable for light loads, low speeds and occasions without shock loads.

Non-metallic materials: such as plastics (such as phenolic resins, nylons, PTFE, etc.), suitable for environments that do not react to chemical substances.

Application scenarios and selection criteria of motor bearings:

Micro or small motors: Oil-impregnated bearings are often selected because they have few accessories and are maintenance-free, which helps to simplify the structure.

Medium and large motors: sliding bearings are suitable for heavy-duty and impact-resistant occasions; Rolling bearings are the most widely used and are suitable for a wide range of working conditions.

 

Maintenance and maintenance of motor bearings:

Lubrication: Rolling bearings are typically lubricated with grease or oil, depending on the operating conditions.

Regular inspection: Regularly check the wear and tear of the bearing, replace the damaged bearing in time, and ensure the normal operation of the motor.

Together, these materials and selection criteria ensure stable operation and long service life of motor bearings under different operating conditions.