The price of gantry machining center -low quality of the combined parts is mainly manifested in the extremely poor dimensional accuracy of the mating surface of the seal of the hydraulic press, which causes the seal part to be eccentric, strained, not tight or pressed too tight. The mounting hole El is not punctured, causing the hydraulic machine seal to be cut and scratched during installation. Poor machining quality of parts, causing eyes and cracks, uneven surfaces, oil line collusion, etc. The roughness of the sealed mating surface also has a large impact on the deafness and service life of the seal. Excessive surface roughness or insufficient hardness can cause premature failure of hydraulic seals due to abrasive and adhesive wear on contact surfaces. Any scratches, blow holes and machining marks will damage the hydraulic seal. Especially the mating surface of the reciprocating seal requires higher roughness. For the reciprocating seal ring, due to its viscosity, pressure and speed of movement, a layer of extremely strong oil film is formed along the metal sliding surface and the street of the hydraulic seal. When the axis is extended outward, the oil film on the shaft is pulled out together with the shaft. When the shaft is retracted, the oil film is blocked by the hydraulic seal. As the number of reciprocations increases, the more liquid retained on the outside, the more oil droplets fall from the shaft. Gantry machining center prices-The hydraulic cylinder shaft head often has dirty oil for this reason. The sealing surface is smooth and has a small roughness. The oil on the outside will not form oil drops in a certain period of time, which will not affect the normal operation of the system. If the seal surface is rough, the oil remaining on the outside will be extremely short. Oil droplets fall from the shaft within a period of time, thus forming a leak. Price of gantry machining center-In terms of assembly, the reason for the failure of the seal is that the assembly environment is not clean and foreign substances are brought into the sealing part; brutal assembly damages the hydraulic machine seal, and the hydraulic machine seal is not installed in the correct position, causing the hydraulic machine seal to be damaged; Insufficient installation accuracy causes eccentricity, loosening while tightening. Pipe joints are not sealed, valve parts are less screwed, and the seal direction of the hydraulic machine seal is reversed.