Bearings typically consist of several key components, including:
1.Outer Ring: The outer ring is the stationary part of the bearing and provides a mounting surface for the bearing within a machine or assembly.
2.Inner Ring: The inner ring is the rotating part of the bearing and is attached to the shaft or axle that rotates within the bearing.
3.Rolling Elements: These are the elements that reduce friction by rolling between the inner and outer rings. Common types of rolling elements include balls, cylindrical rollers, tapered rollers, and needles. The choice of rolling element depends on the specific application and load requirements.
4.Cage or Retainer: The cage or retainer is a component that holds the rolling elements in place and maintains the proper spacing between them. It prevents the rolling elements from coming into direct contact with each other, ensuring they roll smoothly.
5.Lubrication: Bearings require lubrication to reduce friction and dissipate heat generated during operation. Lubrication can come in the form of grease or oil, depending on the type of bearing and its application.
6.Seals or Shields: Bearings may have seals or shields to protect the internal components from contaminants, such as dust, dirt, and moisture. Seals are designed to provide a more effective barrier, while shields are typically used when some level of protection is needed without completely sealing the bearing.
7.Raceways: The inner and outer rings of a bearing have raceways that provide smooth and controlled paths for the rolling elements to move along. The shape and design of these raceways vary depending on the bearing type.
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