Global Brake Applications & Ordering Information Information Required Roll Dia. = 24 inches Tension = 40 lb Velocity = 150 fpm How to Size Torque = Tension x Radius = 40(12/12) = 40 lb-ft rpm = Velocity π(Diameter) = 150 π(24/12) = 24 rpm x rpm = 40(24) = 137 watts Slipwatts = Torque 7 7 Use a GBD Brake Information Required rpm = 175 Stop Load in 2 sec Inertia (WK2) = 8 lb-ft2 How to Size (WK 2)(rpm) = 8(175) = 2.27 lb-ft Torque = (308)(Seconds) 308(2) x (rpm) = 2.27 x (175) = 56.75 watts Slipwatts = Torque 7 7 Ordering Information Global Brakes are available in six sizes, with and without forced air cooling. You may also select the blower voltage. The model number indicates which options have been selected. GB_ Global Brake A M Size A, B, C, D, E, F Metric Model Metric bore and hardware (leave blank for imperial) 90 Coil Voltage 90 VDC or 24 VDC A115 Air Cooled 115 VAC or 230 VAC (leave blank if fan not needed) Magnetic Particle Clutches & Brakes 117 Magnetic Particle Clutches & Brakes Use a GBA Brake