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Brakes and Clutches Applications and Formulas
Hysteresis Brake Application for Material Payoff Constant Tension Control
Film Tensioning
Constant Tensioning Supplied by Hysteresis Unit
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Hysteresis Brake Application for Material Wind-up Tension Control
Web Tensioning
Hysteresis Clutch on a Web Rewind
Providing a Taper Tension
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Eddy Current Clutch Application for Material Wind-up Tension Control
Teflon Tape Slitter
Eddy Current Clutches Provide Diameter
Compensated Tension Control on Rewind
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Brake and Clutch Formulas
Motor Power
HP = Torque (in.-lb.) x RPM / 63025
Torque
Torque (in.-lbs.) = HP x 63025 / RPM
Line Speed of Payoff Spool
FPM = 3.142 x D (in.) x RPM / 12
Spool RPM
RPM = FPM x 12 / 3.142 x D (in.)
Motor Power
Power (watts) = HP x 746 (watts/HP)
Heat Capacity
Watts = Torque (in.-lb.) x RPM x 746 / 63025
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