The fundamental knowledge of industrial bearings (1)

Source: China Bearing Network Time: 2018-01-29

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The basic layout of the first section of the rolling bearing is a rolling bearing developed with the sliding bearing as the base; the working principle is to replace the sliding friction with the rolling friction; generally consists of two ferrules; the versatility of a set of rolling elements and a cage Strong, standardized, highly serialized mechanical roots. Because of the different working conditions of various machines; there are different requirements for the rolling bearings in terms of load capacity, layout and function. Rolling bearings need to have a general layout. However, the most basic layout is composed of inner ring, outer ring, rolling body and cage.
The effects of various parts in the bearing are:
Regarding the radial bearing; the inner ring generally cooperates with the shaft; and works with the shaft; the outer ring generally cooperates with the bearing seat or the mechanical housing hole; the support effect is provided; however; in some cases; the outer ring works The inner ring is fixed to support the effect or the inner ring and the outer ring are all working together. About the thrust bearing; the shaft ring which cooperates with the shaft and moves together; and the bearing seat or the mechanical housing hole cooperates with each other and supports the effect The seat ring. The rolling body (steel ball, roller or needle roller) is generally placed between the two ferrules in the bearing for rolling movement; its shape, size and quantity directly affect the load of the bearing. And the use of functions. The cage can not evenly separate the roll body; it can also guide the rotation of the roll body and improve the smooth function inside the bearing.
The second section of the rolling bearing classification 1. According to the type of roll bearing layout (1) the bearing is different according to the acceptable load direction or nominal touch angle;
1) Radial bearing----first used for rolling bearings that accept radial load; its nominal touch angle is from 0 to 45. It is different according to the nominal touch angle; it is divided into: radial touch bearing----nominal touch Radial bearing with angle 0: centripetal angle touch bearing----central bearing with nominal touch angle greater than 0 to 45.
2) Thrust bearing----first for rolling bearings that accept axial load; its nominal touch angle is greater than 45 to 90. According to the nominal touch angle, it is divided into: axial touch bearing----the nominal touch angle is Thrust bearing of 90: thrust angle touch bearing----the thrust bearing with a nominal touch angle greater than 45 but less than 90.
(2) The bearing according to the type of its rolling body; divided into:
1) Ball bearing----roller is the ball:
2) Roller bearing----roller is roller. Roller bearing is according to roller type; it is divided into: cylindrical roller bearing----roller is the bearing of cylindrical roller; the length of cylindrical roller The ratio of the diameter is less than or equal to 3, the needle bearing----the rolling body is the needle bearing; the ratio of the length to the diameter of the needle is greater than 3; but the diameter is less than or equal to 5mm; the tapered roller bearing---rolling The body is a tapered roller bearing; the spherical roller bearing one by one rolling body is a spherical roller bearing.

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