... .Inspected by CMM 5. Ra1.0, Polish Ra0.4 Piston casting used for industrial clutch and brakes.1. Material: ... Inspected with CMM all;8. O.D. : 506mm, Length: 76.2mm, Weight: 46kg;CompanyIntroduction1. Our company has advanced technological equipments ... , Template parts, Railway fittings, ring flange , electromagnetic steel cover, piston, pressure plate, center plate, wear plate, cylinder, impeller, disc ...