Rolling bearing type selection-01

Various types of rolling bearings have different characteristics and are suitable for different usage situations of various machinery. When selecting a bearing type, the following factors should generally be considered. Generally speaking: thrust bearings and angular contact bearings are used when bearing thrust loads, ball bearings are usually used for high-speed applications, and roller bearings are used when bearing heavy radial loads. In short, the selector should choose the appropriate type from the numerous bearing products from different manufacturers.

The space and position of the machine occupied by the bearing: In mechanical design, the size of the shaft is generally determined first, and then the rolling bearing is selected based on the size of the shaft. Usually ball bearings are used for small shafts and roller bearings are used for large shafts. However, when the bearing is limited in the diameter direction of the machine, needle roller bearings, extra light and ultra light series ball or roller bearings can be used; when the bearing is limited in the axial position of the machine, narrow or special bearings can be used. Narrow series of ball or roller bearings.

The size, direction and nature of the load on the bearing: Load is the most important factor in selecting bearings. Roller bearings are used to bear heavier loads, ball bearings are used to bear lighter or medium loads, and bearings made of carburized steel or bainite quenched can withstand shock and vibration loads. In terms of the direction of load, when bearing pure radial load, deep groove ball bearings, cylindrical roller bearings or needle roller bearings can be used. When bearing small pure axial loads, thrust ball bearings can be selected; when bearing large pure axial loads, thrust roller bearings can be selected. When bearings bear combined radial and axial loads, angular contact ball bearings or tapered roller bearings are generally used.