Bushings and shaft sleeves are selected according to different industrial and mining conditions. The most important conditions are: pressure, speed, pressure-speed product, lubrication state, and load properties.
The requirements for rotary motion and axial sliding are different, and the performance of the lubricant is also very different. The speed and pressure basically determine the life of the sleeve.
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Bushes are generally divided into two types. One is for the convenience of disassembly and assembly. The other is used as a sliding bearing. The sleeve is generally to prevent axial movement
Avoid stress concentration areas (such as wide variation in thickness) to prevent shaft breakage.
On vertical axial flow pumps, diagonal flow pumps, deep well pumps, the bushing and rubber bearings or Sialon bearings form a "lubricating pair", but on some horizontal pumps, such as mid-open double suction pumps, the bushing starts from the axial The adjustment function, and the packing sleeve plays a sealing role together with the packing.
Mainly wear-resistant, both are protective