Four column hydraulic press is a pressing process suitable for plastic materials. Such as powder product molding, plastic product molding, cold (hot) extrusion metal molding, sheet metal stretching, as well as horizontal pressing, bending, turning, correction and other processes.

Often in hydraulic transmission systems, there are some relatively precise components. Although mechanical hydraulic transmission feels labor-saving and convenient, the equipment is also prone to damage. There are three basic "pathogenic" factors in hydraulic systems: pollution, overheating, and air ingress. These three unfavorable factors are closely related internally, and any one of them will lead to another or more problems.

Due to the entry of air into the oil, overheating occurs, and the air also brings in dust, which can quickly cause the oil to deteriorate. As can be seen from the above, there is an inherent connection between pollution, overheating, and entering the air. Therefore, comprehensive prevention of the four column hydraulic press is necessary to ensure the normal operation of the hydraulic system.