... Center 4.Inspected by CMM 5.Smooth surface,Ra1.0 Center Plate Sand casting used for industrial clutch and brakes.1 ... center4. Smooth surface. Ra1.05. Tolerances: Within 0.05mm in Diameter, +/-0.065mm in length;6. Inspected with CMM all. ... fittings, ring flange , electromagnetic steel cover, piston, pressure plate, center plate, wear plate, cylinder, impeller, disc etc.3. Nearly 150 varieties of ...