This paper analyzes the failure phenomenon of gear pump s driving shaft in vacuum purify- ing oil machine,and puts forward the improving method.

Nonlinear dynamic response analysis of unbalance-rubbing coupling faults of rotor-ball bearing-stator coupling system;

Model for dynamic characteristics produced by inner race local defect in ball bearing system and its simulation;

Extraction of the Fault Features of Ball Bearings Based on Bispectrum Analysis;

Control system of broaching machine for bisect plane machining of sliding bearing based on PLC;

A new method for determining form tolerances of combination sliding bearings on cone bits;

Comprehensive evaluation of sliding bearing operation stability based on axle centre trail;

Optimized structure design of the main transmission shaft in series of the flying-saw;

Optimal design of fuzzy reliability for the transmission shaft with vibration considered;

Vibrational signal analysis of transmission shaft based on chaos fractal theory;

Reliable design based on the transmission shaft strength;