CP Safegard Overload Clutches


Catalog excerpts

CP Safegard Overload Clutches - 1

Series CP Safegard Pneumatically operated Overload Clutch CP Pneumatic Overload Clutches operating features Series CP Pneumatic Clutches and Couplings Technical Features Clutch Torque Coupling Torque *d max with keyway according to DIN6885/3 45° WITH LAMELLAR COUPLING, PILOT BORED Clutch Size Email: sales@crossmorse.com Clutch Size During normal operations, (fig. 1+2), the PC clutch transmits a backlash-free torque, proportional to the air pressure, from the input hub(1) to the output flange(18), through balls(16), forced by the air pressure on the moving flange(11) into the seats on the parts(1) and (18). A torque arm(5B) is required to avoid the rotation of the stator(5). When overload occurs(fig. 3), the input hub(1) and the output flange(18) disengage, and axial movement of the flange(11) against the air pressure activates the stop switch(14), which gives a signal to cut off the air; input and output of the clutch are then disconnected. CP units can be used as a clutch. The air pressure can be switched on or off, transmitting torque when on and remotely disconnecting the drive when not. CP clutches must be engaged under no load condition at slow speed or when stationary. Disengagement torque is proportional to air pressure, according to the torque/pressure diagram on the label on the clutch outer diameter. Filtered, oiled air kept at a constant pressure during normal operations will ensure the accuracy of the overload torque. CP Clutches are zero backlash units which provide remote accurate adjustment of the overload torque by air pressure adjustment. The torque can be constantly adjusted throughout a production cycle providing optimum machine protection. CP Overload Clutches can be integrated into complex control systems with substantial advantage in automatic machinery with continuous changes of operating conditions. A stop switch is integrated in the torque limiter detecting the axial movement of the unit in event of an overload, providing a signal to cut off the air feed, to disconnect the drive. When overloaded, the CP Clutch has no connection between drive and driven sides providing a long maintenance free service life. After the cause of the overload has been removed the clutch can be automatically re-engaged by resumming the air pressure. Standard finish on the clutches is black phosphate exterior, but can supply in Nickel plated.

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