１．外漏原因及解决办法 液压缸外部漏油有两处，一处是缸体与端盖接合部的固定配合表面之间的漏油，只要选择合适的Ｏ形圈即可解决问题；另一处是活塞杆与导向套间相对运动表面之间的漏油，是不可避免的。若液压缸在完全不漏油的条件下作往复运动，活塞杆表面与密封件之间将处 1. Leakage causes and solutions There are two external leakage of the hydraulic cylinder, one is the leakage between the cylinder and the fixed mating interface with the cover, as long as the appropriate choice of O-ring can solve the problem; the other Is the piston rod and guide sleeve between the relative movement between the surface of the oil leakage is inevitable. If the hydraulic cylinder in a completely oil-free conditions for reciprocating motion, the piston rod surface and the seal will be between