Thermal expansion sleeve bushing TWB-2

stainless steelshaft

Shaft Sleeves Shaft sleeves are applied in order to protect the shaft respectively the running surface of the shaft seal from damage or abrasive wear. An insufficient hardness of the shaft may make the application of a shaft sleeve indispensable because for present operating conditions the appropriate surface hardness must be considered. When choosing the shaft sleeve it should be noticed that the thermal expansion coefficient α of shaft and shaft sleeve are almost equal. With the adequate choice of the shaft sleeve, the chemical resistance of a steel shaft can be improved to the level of stainless steel.