Influence of the seal ring s compressibility within gear pump on the bush s static balance;

FEA for a double-helix single screw pump bush profile;

The deformation, stress and strain's distribution of the double-helix single screw pump bush are discussed when the bush is under equal pressure, disordered pressure and the static contact with the bush and screw.

Analysis and application of liner burning and rotary liner mechanism of connected bar;

Discussion About Wall Thickness Tolerance and Wall Thickness Difference of Bushing;

Interference Fit of Bushing and Hole by Using Cold Extrusion;

Fractures occurr frequently in the bushing made from high speed tool steel on the bearing system of blast hole rock bits A big increase in toughness is obtained through low temperature quenching and parameter optimization The industrial test shows that the fracture rate declines from 90%~96% by 7%~13% and drilling meters increase by 17%.

New methods for fast removing troubles from lining;

Thin-wall linings are easy to deform in processing and assemblying,this paper puts forward solutions to solve this problem.

In this article a new calculation technique for stresses in the bush sleeve (shell), strengthened by a case, pulled on it, in the electromotor of the pressurized pump is offered.

Based on worksite practice,the paper introduces Cleaning and Overhaul Technology of the chock, bushing,sleeve which are the key parts in the oil film bearing.