When HCS hydraulic impact crusher machine is at work, the motor through the belt, transmission shaft, bevel gear pair drives the eccentric sleeve to rotate and the moving impact does the rotating swing motion under the action of the eccentric sleeve to make moving impact and fixed impact sometimes be closer or deviation. The materials are being squeezed, crushing in the crushing cavity and finally are discharged from the lower.Numerous facts have proved that the more simple mechanical system structure is, the lower failure rate is, higher reliability and running more stable. In order to ensure the comprehensive performance, the structure of the machine is optimization, higher smooth transmission and more reliable performance.