A shaft sleeve is a component installed on a shaft to support and position bearings. However, not all bearings require shaft sleeves, such as ball bearings and angular contact ball bearings. Under correct installation and lubrication conditions, they can operate directly in contact with the shaft without the need for shaft sleeves.

Which bearings require the use of shaft sleeves?

Sliding bearing: a bearing that directly contacts the shaft on the inner diameter surface. To reduce friction and wear, protect the shaft, and provide lubrication, a sleeve is usually installed on the shaft.

Zhongyuan Sliding Chaoshi Bushing

Linear bearing: used to support and guide the shaft in linear motion. To reduce friction, provide lubrication, and protect the shaft, a sleeve is often installed on the shaft.

Cylindrical roller bearings: Rollers are used between the inner and outer rings to withstand loads. In some applications, to reduce friction and wear, protect the shaft, and provide lubrication, shaft sleeves may be installed on the shaft holes of the inner or outer rings.

What are the common types of bearing bushings?

Needle roller bearing sleeve: provides a smooth surface to reduce friction with the needle rollers.

Stress distribution sleeve: mainly used in bearings that withstand high loads and high impact loads to distribute loads and reduce local stress concentration.

Self lubricating bearing sleeve: With built-in lubricant, it provides long-lasting lubrication during operation, reducing bearing friction and wear.

Split shaft sleeve: usually used for equipment that is difficult to disassemble or requires frequent maintenance.