Shaft Surface Roughness Standardization for Connections with Rubber Armored Cuffs

The problems of standardization of the shaft surface roughness for armored rubber cuffs are considered. It is revealed that a decrease in the shaft surface roughness leads to increased leakage, and with its increase, the wear of the cuff increases sharply. It is shown that the relative length of the profile bearing affects the cuff wear. In order to increase the durability of the sealing unit, it is recommended to standardize the surface roughness not only within a given range, but also to take into account the location of irregularities and the relative profile bearing length, which can be provided by surface-plastic deformation using rollers or balls.