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Home>Bearing knowledge>Classification of plain bearings
Classification of plain bearings
According to the working principle of the bearing can be divided: rolling friction bearing (rolling bearing) and sliding friction bearing (sliding bearing).
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Sliding bearing: If the outer surface of the sliding bearing can form a smooth film to separate the outer side of the moving pair; the sliding friction force can be greatly reduced; because the outer surface of the moving pair is not directly touched; thus the wear is avoided. The bearing capacity of the sliding bearing can be large; High; smooth film has an impact resistance; thus; has been widely used in engineering.
The composition of the smooth film is the basic condition for the normal operation of the sliding bearing; the elements affecting the smooth film have a smooth method, the relative motion speed of the motion pair, the physical properties of the smoothing agent, and the roughness of the outer surface of the moving pair. The drawing of the sliding bearing should be based on Bearing operating conditions; determine the type of bearing layout, select smoothing agent and smooth method and determine the parameters of the bearing.
According to the direction of the acceptable load, it can be divided into radial (central) sliding bearing and thrust (axial) sliding bearing.
According to the type of smoothing agent, it can be divided into oil smooth bearing, grease smooth bearing, water smooth bearing, gas bearing, solid smooth bearing, magnetic fluid bearing and electromagnetic bearing.
According to the thickness of the smooth film, it can be divided into two types: thin film smooth bearing and thick film smooth bearing.
According to the bearing material, it can be divided into bronze bearing, cast iron bearing, plastic bearing, gemstone bearing, powder metallurgy bearing, self-smooth bearing and oil bearing.
According to the bearing tile layout can be divided into round bearing, elliptical bearing, three oil leaf bearing, step surface bearing, tilting pad bearing and foil bearing.
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