How to ensure that the oil quality of the four-column hydraulic press is not polluted?
(1) Keep the hydraulic oil clean before use. Hydraulic oil will be contaminated during transportation and storage. The newly bought hydraulic oil looks clean and "dirty" and must be filtered into the hydraulic system after several days of static discharge.
(2) Keep the hydraulic system clean after assembly and before operation. Hydraulic components must be cleaned in the process of processing and assembly, the hydraulic system should be thoroughly cleaned after assembly and before operation, it is best to use the oil used in the system to clean, the oil tank must be sealed in addition to the vent hole (plus dust shield), seals must not have flashes, burrs.