WSBC Roller Bearing

Time：2020.06.09  Source：Roller Bearings Suppliers

Roller bearings are one of the rolling bearings and one of the widely used components in modern machinery. It relies on the rolling contact between the main components to support the rotating parts. Roller bearings are now mostly standardized. Roller bearings have the advantages of low torque required for starting, high rotation accuracy, and easy selection.

Definition

Rolling bearings are divided into ball bearings and roller bearings according to the rolling force.

Roller bearings rely on the rolling contact between the main parts to support the rotating parts. Different roller bearings can withstand different radial and axial forces. When choosing a roller bearing, the choice should be based on specific working conditions.

Roller bearings mainly include spherical roller bearings, thrust spherical roller bearings, tapered roller and cylindrical roller bearings.

Type selection

When selecting bearings, the main considerations are as follows:

Bearing load

The size, direction and nature of the load on the bearing are the main factors in choosing the bearing.

When selecting a bearing according to the magnitude of the load, compared with the point contact of a ball bearing, the main elements in the roller bearing are line contacts, which are easy to use for the load and the deformation after the load is also small.

When selecting bearings according to the load direction, for pure axial loads, thrust bearings are generally selected. The larger axial force selects thrust roller bearings. For smaller axial forces, select thrust ball bearings. For pure radial loads, deep groove ball bearings, cylindrical roller bearings or needle roller bearings are generally used. When under radial load, but also under a small axial load, you can choose deep groove ball bearings or tapered roller bearings; when the axial load is large, you can choose an angular contact ball with a large contact angle Bearings or tapered roller bearings. 

Bearing speed

Under normal circumstances, the speed will not have any impact on the choice of bearing type, but when the speed is large, the speed should be included in the selection criteria of the bearing.

(1) Compared with roller bearings, ball bearings have a higher limit speed, so in the case of high speed, priority is given to ball bearings.

(2) In the case of the same inner diameter, the smaller the outer diameter, the smaller the rolling element, so the centrifugal force of the rolling element on the outer ring is smaller, so it is more suitable for working at high speed. According to the properties given in Table 1, needle roller bearings are more suitable for working at high speeds. 

Alignment performance of bearings

When the center line of the shaft does not coincide with the center line of the bearing seat and there is an angle error, or when the shaft is bent or tilted due to the force of the shaft, the axis of the inner and outer rings of the bearing will be skewed. At this time, self-aligning bearings or spherical ball bearings with seats with certain self-aligning performance should be used.

Roller bearings are most sensitive to the deflection of bearings. The bearing capacity of such bearings in the deflection state may be lower than that of ball bearings. Therefore, when the stiffness of the shaft and the support stiffness of the bearing seat hole are low, or when there is a large deflection moment, such bearings should be avoided as much as possible. 

Bearing installation and removal

When the bearing housing has no split surface and parts must be installed and removed in the axial direction, bearings with separable inner and outer rings (such as N0000, NA0000, 30000, etc.) should be preferred.

Today's model explanation: WSBC_10-8326

Wuxi Spark Bearing Co., Ltd is a company specializing in the production of roller bearings &ball bearings, focusing on foreign trade for more than ten years, and has provided products to customers in more than 100 countries around the world. For more product details, please visit our website .