"rock breaker seal kit"

Soosan SB40 Hydraulic Breaker Piston SB40 Excavator Hammer Piston

OEM grade 42CrMo SB40 hydraulic breaker piston for Soosan SB40 rock hammer, high hardness anti-wear replacement impact piston, factory wholesale excavator breaker spare parts with. Core Product Features Premium 42CrMo forging blank, balanced surface hardness & inner toughness, anti-breakage under continuous high-frequency heavy impact. CNC full outer circle precision grinding, ultra-low dimensional tolerance, perfect clearance fit with SB40 cylinder liner, less friction & oil