Motor bearing shell-WL

     Motor bearing bushing(shell). A motor bearing bushing is a mechanical component used to support and position the rotating shaft of a motor. It is typically made of a wear-resistant material such as white metal, bronze alloy, or steel coated with special lubricants. The design and manufacturing of the bushing are crucial to ensure smooth rotation of the motor shaft and provide proper support and sealing.

      A motor bearing bushing usually consists of two parts: the upper bushing and the lower bushing. The upper bushing is located at the top of the motor shaft, while the lower bushing is positioned at the bottom. They create a clearance known as the bearing clearance, which is filled with lubricating oil or grease to reduce friction between the bushing and the shaft, thereby minimizing wear and heat generation.

     The functions of a motor bearing bushing include:

1. Shaft support: The bushing supports the load and inertia forces of the motor shaft during rotation.
2. Shaft positioning: The geometric shape and dimensions of the bushing are designed to ensure proper alignment and restrict axial movement of the motor shaft.
3. Friction reduction: The lubricant in the bearing clearance minimizes direct contact between the bushing and the shaft, reducing friction and wear.
4. Sealing and lubrication: The lubricant between the bushing and the motor shaft acts as a seal, preventing the entry of external contaminants and providing necessary lubrication.
5. Heat dissipation: The bushing helps dissipate the heat generated on the motor shaft into the surrounding environment, maintaining the proper operating temperature of the shaft.

      Regular maintenance and replacement of motor bearing bushings are essential for the smooth operation of the motor. Periodically inspecting and maintaining the bushings, including lubricant addition, adjusting the bearing clearance, and replacing heavily worn bushings, can prolong the motor's lifespan and ensure stable performance.

        When plain bearings work, a thin oil film is required between the motor bearing and the rotating shaft to lubricate. If the lubrication is poor, there is direct friction between the bearing and the shaft, and the friction will produce a high temperature, although the bearing is made of a special high-temperature resistant alloy material, but the high temperature generated by direct friction is still enough to burn it out. Motor bearings can also be burned due to factors such as excessive load, excessive temperature, impurities or abnormal viscosity of the lubricating oil. The plain bearing was damaged after the shingle was burned.

       The motor bearing material is usually soft, and the inner cylindrical surface is not suitable for processing by grinding method, and can be processed by boring, diamond boring, scraping or grinding. When grinding, the method of matching the shaft diameter should not be used, but a special rod with the same size as the bearing bore size should be used.

Scraping is mostly used for partial tile bearings, with a wide-edged scraper machine. When scraping by hand, the scratch should be shallow. Bearings with complex inner surface shapes should adopt special boring methods according to the specific shape.