C-3 Dimensions and Specifications Dimensions (millimeters in shaded area) Model A B C D E F H N O P R U W AA1 AA2 C-3 4.31 4.50 8.25 2.44 1.75 1.815 0.344 1.28 4.69 4.5 - 0.4997 0.03 7/8 - - C-3A 4.44 4.50 8.25 2.44 1.75 1.813 0.344 1.25 10.38 5.0 6.75 0.4997 0.03 7/8 0.88 2.55 C-3 109.5 114.3 209.6 61.9 44.5 46.1 8.74 32.5 119.1 114.3 - 12.69 0.8 22.2 - - C-3A 109.5 114.3 209.6 61.9 44.5 46.0 8.73 32.5 268.4 127.0 178.0 12.69 0.8 22.2 22.2 64.6 Model AE1 AE2 BA Key C-3 0.81 - 1.03 1/8 X 1/8 X 1 C-3A 0.78 9.75 1.03 1/8 X 1/8 X 1 C-3 20.6 - 26.16 3.2 X 3.2 X 25.4 C-3A 19.9 247.7 26.16 3.2 X 3.2 X 25.4 AC Model Rated Torque (lb-ft) (Nm) Watts hp Non Excited Drag Torque (lb-ft) (Nm) Heat Dissipation at 1800 rpm of Outer Member Inertia (WR2) of Rotating Members (lb-ft2) (kg-m2) Outer Inner WT (lb) (kg) Coil Data (90 VDC) Rated Current Time Constants (Seconds) Ω @ 20˚C Current Torque C-3 3 321 0.43 0.11 0.00886 0.00418 11.8 0.17 350 0.08 0.11 C-3A 3 544 0.73 0.11 0.00886 0.00418 16.3 0.17 350 0.08 0.11 C-3 4.1 321 0.43 0.15 0.000373 0.000176 5.3 0.17 350 0.08 0.11 C-3A 4.1 544 0.73 0.15 0.000373 0.000176 7.4 0.17 350 0.08 0.11 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. 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. * Fan power requirements: 115 VAC, 60 Hz, 0.60 amp Magnetic Particle Clutches & Brakes 103 Magnetic Particle Clutches & Brakes Specifications (metric in shaded area)