Placid Industries - - Large, high torque Magnetic Particle Clutches, up to 300 lb.-feet torque.

Magnetic Particle Clutch - Specifications

   graphic  Smaller clutches
available.		   clutch photo
Torque range = 0.4 - 16  to  300 lb.-feet  (3600 lb.-inch)

View in metric units
5 solid shaft models
Clutch group photo		  Typical applications:
  • Adjustable tension for rewinding webs
  • Load simulation
  • Torque limiting
  • Soft starts
1 hollow shaft model
Hollow clutch photo
graphic

Mount with shafts horizontally only
Models  KC-20,   KC-5   Model PHC-5

Torque Curve Torque is -
  • Proportional to input current
  • Independent of RPM

Characteristics - With no electrical excitation, the input shaft & output shaft freely rotate.
With electrical excitation, the output shaft becomes coupled to the input shaft.

While the load torque is less than the output torque, the clutch drives without slip. When the load torque is increased, the clutch will slip smoothly at the torque level set by the coil input current.

Use the sizing information to select the proper clutch.


Clutch Specifications
MODEL

(Click p/n
to view
photo)
image		 Shaft
Style		 Torque
Range

(lb.-ft.)		 image    Coil Output
Shaft
Inertia

(lb.-in.-sec2)		 Over-
hung
Load
Max.

(lbs.)		 Max.
RPM		 Weight

(lbs.)		 Data Sheets

image PDF logo		 Drawings

image
Input
Current
(amps)		 Voltage
at 68°F at 160°F
KC-2.5 icon
solid		 0.4 - 16 1.3 20 24 0.013 90 1800 21 KC-2.5
data sheet		 PDF icon GIF
DXF
PHC-5 icon
hollow		 1 - 30 1.3 20 25 0.052 125 26 PHC-5
data sheet		 PDF icon GIF
DXF
KC-5 icon

solid		 1 - 38 1.8 17 22 0.042 125 35 KC-5
data sheet		 PDF icon GIF
DXF
KC-10 2 - 75 2.4 20 24 0.22 175 84 KC-10
data sheet		 PDF icon GIF
DXF
KC-20 3 - 150 2.2 17 20 0.61 200 129 KC-20
data sheet		 PDF icon GIF
DXF
KC-40 6 - 300 3.0 17 21 2.0 325 238 KC-40
data sheet		 PDF icon GIF
DXF

DRAWINGS:   PDF-Adobe Acrobat.    GIF-View within browser (Internet Explorer, Firefox, Netscape Navigator etc.).
   DXF-Import into your CAD program.


Heat Dissipation
MODEL Heat Dissipation
(watts)		 Compressed Air
at
100 RPM		 at
1000 RPM		 with compressed
air cooling		 Pressure
(lb.-in.2)		 Flow Rate
(ft.3 / minute)
KC-2.5 130 175 260 4 6
PHC-5 250 400 -
KC-5 190 275 425 5 7
KC-10 300 500 800 9 5
KC-20 425 800 1200 7 6
KC-40 550 1200 1900 21 14
  pdf icon.gif
Download
1 page summary sheet,
in PDF format.

Fins on internal rotor move air which increases cooling with increasing RPM.

Solid shaft models - Clean, dry compressed air may be used to increase cooling.
The case has a threaded port for air connections. Threads are BSPT (tapered).

coupling photo   Adapts our
clutch metric shaft
to your
inch or metric shaft.
Flexible
Couplings
           
Power Supply
for KC & PHC clutches.		   power supply photo
Power Supply
Signal Isolation Card & Ultrasonic Sensor - For Constant Tension Unwinding & Rewinding
Signal Isolation Card.gif   The ultrasonic sensor measures the diameter of the roll, to keep tension constant as roll diameter changes.
The Signal Isolation Card powers the ultrasonic sensor & scales the ultrasonic's signal, for tension adjustments.
The 0-10 volt signal controls your constant current power supply.
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