Single friction disc, self-adjusting clutches mount on driving or driven shafts. They handle transmitted horsepower ratings from fractional up to 25 HP with torque ratings to 5000 in-lb at 80 psi. These clutches have thermal capacities to 2-1/2 HP and maximum operating speeds up to 3600 RPM. Most are available with integral sheaves, pilot mount or coupling versions. This product group includes twelve imperial models and five metric models. Nexen® Air Champ® Shaft Mounted Friction Clutch, Air Actuated/Spring Return Open, 2110 in-lb Static Torque, 2.399 cu-in New/4.516 cu-in Worn Out Air Volume, 250 RPM Maximum, 80 psi Maximum, 1-1/4 in Bore, Machined Aluminum, 4.56 in OD x 5.02 in L Dimensions