Dimensions & Specifications Key 1/4 X 1/4 X 1 3/4 inches 6.4 X 6.4 X 44 mm Threads 3/4 inch - 16NF x 13/16 inch Deep 3/4 inch - 16NF x 21 mm Deep Dimensions (millimeters in shaded area) A B C D N O P U W AA1 AE1 BA AA2 AC AE2 C-50 8.38 7.45 15.26 4.5 3.625 3.125 0.406 2.26 8.87 8.75 1.25 0.12 7/8, 1 1/8 0.93 2.25 - - - C-50W 8.38 7.45 15.26 4.5 3.625 3.125 0.406 2.26 8.87 8.75 1.25 0.12 7/8, 1 1/8 0.93 2.25 - - - C-50A 8.38 7.45 15.26 4.5 3.630 3.130 0.406 2.26 18.56 9.25 1.25 0.10 7/8, 1 1/8 0.93 2.25 0.88 1.70 15.62 8.38 7.45 15.26 4.5 9.25 C-50WA E F H 3.630 3.130 0.406 2.26 18.56 1.25 0.10 7/8, 1 1/8 0.93 2.25 0.88 1.70 15.62 C-50 212.7 189.2 387.5 114.2 92.1 79.4 10.32 57.4 225.3 222.3 31.75 3.0 22.2 23.4 57.1 - - - C-50W 212.7 189.2 387.5 114.2 92.1 79.4 10.32 57.4 225.3 222.3 31.75 3.0 22.2 23.4 57.1 - - - C-50A 212.7 189.2 387.5 114.2 92.1 79.4 10.32 57.3 471.4 235.0 31.75 2.5 22.6 23.4 57.1 22.2 43.2 396.6 C-50WA 212.7 189.2 387.5 114.2 92.1 79.4 10.32 57.3 471.4 235.0 31.75 2.5 22.6 23.4 57.1 22.2 43.2 396.6 Specification (metric in shaded area) Model C-50 C-50W C-50A C-50WA C-50 C-50W C-50A C-50WA Rated Torque (lb-ft) (Nm) 50 50 50 50 67.8 67.8 67.8 67.8 Watts hp Non Excited Drag Torque (lb-ft) (Nm) 1297 6254 1538 6430 1297 6254 1538 6430 1.74 8.38 2.06 8.61 1.74 8.38 2.06 8.61 0.80 0.80 0.80 0.80 1.10 1.10 1.10 1.10 Heat Dissipation at 1800 rpm of Outer Member Inertia (WR2) of Rotating Members (lb-ft2) (kg-m2) Outer Inner 0.36 0.36 0.36 0.36 0.0152 0.0152 0.0152 0.0152 0.26 0.24 0.26 0.24 0.0110 0.0101 0.0110 0.0101 WT (lb) (kg) 89 85 109 105 40 39 49 48 Coil Data (90 VDC) Time Constants (Seconds) Rated Current Ω@ 20˚C Current Torque 0.49 0.49 0.49 0.49 0.49 0.49 0.49 0.49 119 119 119 119 119 119 119 119 0.30 0.30 0.30 0.30 0.30 0.30 0.30 0.30 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Time constants are the time in seconds for current or torque to reach 63% of the final value after step function voltage is applied. "Rated current" is the current which will occur from a 90 VDC input to the clutch when the unit is operated at its rated temperature (maximum heat dissipation). Non excited drag torque and torque time constant measured at 1800 rpm. Axis of shafts must lie within 30˚ of horizontal. Water requirements are 1 gpm minimum @ 103˚ F maximum. Separate water fitting required for W models. Fan power requirements are 115 VAC, 60 Hz, 1.86 amp. Non excited drag torque values represent a typical unit after a few minutes of use. Drag torque in a new, unused unit may initially be higher. Magnetic Particle Clutches & Brakes 107 Magnetic Particle Clutches & Brakes Model