YH70 Back Liner 51974574 is an internal component used in the rear section of the hydraulic rock drill. It provides a supporting surface for moving parts and helps maintain their alignment during drilling operations.
Manufactured by ONSAMAK from wear-resistant material, the 51974574 back liner is designed to withstand repeated impact loads and friction during operation. It is supplied as an aftermarket replacement part for rock drilling equipment used in mining, quarrying, and construction.
