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RFDC Product Line

RFDC Product Line

RFDC Product Line

  • Wet Static Torque – 12 to 795 lb-ft
  • Wet Starting Torque – 7 to 449 lb-ft
  • Dry Static Torque – 32 to 882 lb-ft
  • Dry Starting Torque – 10 to 673 lb-ft
  • Max Speed – 1750 to 4200 rpm
  • Nine standard frame sizes
  • Overall Dia. – 3.9″ to 9.2″
  • Overall Length – 1.7″ to 3.3″
  • Rotor Bore – .8″ to 2.8″
Performance / Mechanical Specifications RFDC Series — Model Size
RFDC - 395 RFDC - 435 RFDC - 475 RFDC - 520 RFDC - 580 RFDC - 640 RFDC - 720 RFDC - 795 RFDC - 925
STP File Model 3D 3D 3D 3D 3D 3D 3D 3D 3D
Torque Static (Wet) lb-ft 12 23 46 75 117 187 300 505 795
Torque Starting (Wet) lb-ft 7 12 25 42 65 107 168 281 449
Torque Static (Dry) lb-ft 13 25 52 84 130 208 332 561 882
Torque Starting (Dry) lb-ft 10 19 39 63 98 161 253 421 673
Max Speed rpm 4200 4000 3500 3200 3000 2500 2200 2000 1750
Overall Length (ref) in 1.77 1.88 2.04 2.16 2.28 2.44 2.67 2.99 2.875
Mag Body Bore (max.) in 0.875 1.125 1.25 1.5 1.687 1.875 2.188 2.5 2.875

RFDC Operation

This SEPAC rotating field multiple disc clutch is designed to operate both dry and in oil. No bearings are used. Current is supplied to the magnet body coil by an electrical brush through a slip ring. (Grounding is accomplished internally through the magnet body to the machine shaft.) Many options are available.

When current is applied to the coil in the magnet body, a magnetic field is created which attracts the armature toward the magnet body face. This causes the outer disc to be squeezed between the inner discs and the torque is transmitted from the input (magnet body) to the output (spider).

Rotating Field Multiple Disc — RFDC