Wichita pneumatic clutches and brakes

Wichita pneumatic disc clutches and brakes are available with friction disc diameters ranging from 100-2,500mm and in one, two or three plate designs, giving a torque range of 50-2000000Nm. This means that even in designs where available mounting space is limited, or rotational speed is high, there is a standard WICHITA unit to solve the problem.
Accurate control of a large variety of machine functions can be achieved through the convenient operating medium of compressed air. Because the units have freely moving discs, the force which is directly proportional to the applied pressure in the air tube, precise torque control is made possible for:

• Torque limiting & overload protection
• Winding and unwinding of paper, fabrics, foil, plastics, ferrous and non-ferrous metals
• Line tension control in winches
• Dynamometer and test rig installations

Alternatively, the air tube can be rapidly inflated and deflated through quick action valves, to provide the extremely fast response in:

• Rapid stop/start cycling of large inertias
• Fast application of emergency brakes
• Accurate positioning of stop/start movements