Rewind operations require smooth, consistent torque to wind roll of all types of materials. Continuous slip applications also need clutches to efficiently dissipate heat. Nexen® tension control clutches, with closely held flatness and finish tolerances, combined with specific friction materials provide ultimate web tension control. Nexen® Tension Control Clutch, Air Actuated/Spring Return Heavy/Medium duty Multi-Caliper Open, 2120 in-lb Dynamic Torque, 1500 RPM Maximum, 1-3/8 in Bore, Bare Cast Aluminum/Black Oxide, 13.5 in OD x 12.71 in L Dimensions