Date: 2013-08-20

The structural changes of the bearing

Bearings and working conditions, many structural changes, but the basic structure by the inner ring, outer ring, rolling element (ball or roller) and the cage is composed of four parts. Here we give the details:
(1) The inner ring (also known as sleeve or inner). Normally fixed on the journal, the inner ring and the shaft is rotated together. The inner ring on the outer surface for the ball or roller sub-rolling grooves, called an inner groove or raceway.
(2) the outer ring (also known as a jacket or outer). Usually fixed in the bearing housing or machine casing, since the role of supporting rolling body. On the surface of the outer ring also has grooves or inner raceway for the ball or roller sub-rolling grooves, called.
(3) rolling elements (balls or rollers). Each bearing has a rolling element of a group or several groups, fitted between the inner ring and the outer ring, from the rolling of the role of the transmission force. The rolling body is subjected to load parts, its shape, size, and determines the number of the performance of the various high-speed operation of the ability of the bearing to withstand loads.
(4) the holder (also called retainer or isolator). Bearing rolling bodies evenly spaced, so that each rolling element rolling between the inner ring and the outer ring normally. In addition, the holder having a guide rolling body motion and improve internal lubrication conditions in bearings, and to prevent the rolling body shedding.
In the bearing and the shaft with ferrule called shaft washer, draw a large audience with the ferrule with the bearing housing or machine casing ring, shaft washer and seat are collectively referred washers. In addition to the above four parts, various bearing structure, as well as the other parts of their match. For example, rivets, dust cover, seal, stopper washers, retaining rings and tight sleeves.

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