The material of front head, back head and cylinder is 20CrMo, piston is 40CrNiMo, the material of hydraulic breaker chisel is 40CrMo, optional 42CrMO, oil seal is NOK.
hydraulic breaker main body assy cylinder assy rock breaker back head cylinder front head
We manufacture hydraulic breaker main body for HB15G HB20G HB30G HB40G
HB20G hydraulic breaker main body assembly
High quality HB20G hydraulic breaker main body assembly front head back head cylinder