Sliding bearings developed on the basis of the rolling bearing, its working principle is based on rolling friction instead of sliding friction, generally consists of two rings, a set of rolling elements and a cage consisting of highly versatile, standardization, serialization degree of very high mechanical basic parts. Have different due to various mechanical working conditions, the load bearing capacity of the structure and performance etc. have put forward a variety of different requirements.
Various parts of the role of the bearing are:
For radial bearings, the inner ring is usually a tight fit with the shaft, together with the shaft running, usually bearing outer ring or mechanical shell holes into the transition fit, play supporting role. However, in some cases, there are outer functioning, role or act as bearing inner ring fixed to the inner ring, outer ring are running simultaneously. For thrust bearings, and shaft tight fit and movement axis of said ring together with the bearing or mechanical shell holes into the match and play the supporting role in the transition of said seat. Rolling elements (balls, rollers or needle) in the bearing retainer means generally arranged evenly between the two rings for the rolling motion, its shape, size and number of direct influence on the bearing load capacity and performance. In addition to rolling element cage can evenly spaced outside, but also from the guide roller rotation and improving internal bearing lubrication and so on.
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