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由于装配需要,对活塞销的长度尺寸及两端面对外圆表面的跳动量,都有较严格的要求。但销子经淬火后,硬度达HRC 58～64,难以车削,因而许多工厂用双端面磨床磨削活塞销两端面。
Due to assembly requirements, the length of the piston pin size and the size of both ends of the outer surface of the cylinder beat, have more stringent requirements. However, the pin hardened, the hardness of HRC 58 ~ 64, difficult to turning, so many factories with double-end grinder grinding both ends of the piston pin.