Hydraulic cylinder is the core of construction machinery remanufacturing. Remanufacturing enterprises in China are eager for finding out feasible remanufacturing process for the used hydraulic cylinder, which main failure mode is scratch on the surface of hydraulic cylinder bore. Causes of failure mode and feasibility of honing process applied on of hydraulic cylinder bore remanufacturing are analyzed considering three factors: little machining allowance, overlapping curve and high surface quality. The honing process technology is presented, including selection of honing machine, honing oilstone, honing oil and process parameters of course honing, micro honing and polishing, and honing process for remanufacturing. A case of applying honing process on boom cylinder bore remanufacturing is given and proved to be feasible in practice.
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