Product Description Piston is the main components for hydraulic breaker/hydraulic hammer cylinder. It is the moving part of a hydraulic breaker/hydraulic hammer. The piston moves up and down and hits on the tool, while the valve rotates to control the oil flow's direction. It is the place where movement happens and where the hydraulic power is generated. 1. The piston transfers mechanical energy to the hydraulic breaker rod (rock rod) in the way of reciprocating motion, and is one of the two important moving parts of the breaker hammer. 2. Piston failure mode: fracture, scratch 3. Failure mode of the middle cylinder block: excessive clearance and scratches caused by wear; 4. The attack target, working time, operation method, product quality, ability to prevent foreign objects from entering the system and the oil condition jointly determine the life…