Work under the sliding friction bearings. Sliding bearing is stable, reliable, no noise. Conditions of liquid lubrication, sliding surface lubricant to separate without the risk of direct contact, but also can greatly reduce the friction loss and surface wear; the film also has a certain vibration absorption capacity. But starting frictional resistance. Shaft bearing part is called the journal known as the bearing journal to match parts.
Cast on its inner surface in order to improve the friction properties of the bearing surface andante-friction material layer is called the bearing liner. Bearings and bearing liner materials are collectively referred to as the bearing material. Commonly used bearing material bearing alloys (also known as Babbitt or white metal), cast iron, copper and aluminum alloys, powder metallurgy materials, plastics, rubber, hardwood and carbon - graphite.
Many different types of plain bearings.
① can withstand the load direction can be divided into radial (heart) sliding bearings and thrust(axial) two types of sliding bearings.
② Press the lubricant types can be divided into oil lubricated bearings, grease lubricated bearings, water lubricated bearings, gas bearings, solid lubricating bearings, magnetic fluid bearings and electromagnetic bearings.
③ Press the lubricant film thickness can be divided into two types of film lubricated bearings and thick-film lubrication bearings.
④ can be divided into bronze bearings, cast iron bearings, plastic bearings, jewel bearings, powder metallurgy bearings, self-lubricating bearings and oil bearing and other bearing materials.
⑤ Press the bearing structure can be divided into round bearings, bearing oval, three oil leaves bearing, stepped surface bearings, tilting pad bearings and foil bearings.
Sliding bearing will produce the journal and bearing contact at work due to friction, resulting in surface heat, wear and even "killed", so should be used in the design bearing antifriction good sliding bearing materials bearing, select the appropriate lubrication the agent and the appropriate method of supply, improve the structure of the bearings in order to obtain a thick film lubrication.



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