Roller door bearings belong to a type of rolling bearing

Roller door bearings belong to a type of rolling bearing and are widely used components in modern machinery. It relies on the rolling contact between the main components to support the rotating parts. Roller door bearings are now mostly standardized. Roller door bearings have the advantages of low starting torque, high rotational accuracy, and easy selection.
Roller door bearings rely on rolling contact between the main components to support rotating parts. Different roller bearings can withstand different radial and axial forces. When selecting roller door bearings, the choice should be made based on specific working conditions.

When selecting bearings based on the size of the load, compared to point contact in ball bearings, the main components in roller bearings are in line contact, which is easy to withstand loads and has less deformation after bearing.
When selecting roller door bearings based on the direction of the load, thrust bearings are generally chosen for pure axial loads. Choose thrust roller bearings for larger axial forces.

Lubrication is of great significance for bearings. The lubricant in bearings can not only reduce frictional resistance, but also play a role in heat dissipation, reducing contact stress, absorbing vibration, and preventing rust.
In general, the rotational speed does not have any impact on the selection of roller door bearings types, but when the rotational speed is high, it should be included in the criteria for bearing selection. Compared with roller bearings, ball bearings have a higher limit speed, so ball bearings are preferred at high speeds.
In the case of the same inner diameter, the smaller the outer diameter, the smaller the rolling element, so the centrifugal force exerted by the rolling element on the outer ring is smaller, making it more suitable for working at high speeds.
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