Placid Industries - - Large, high torque Magnetic Particle Brakes, up to 400 Newton-meters torque.

Magnetic Particle Brake - Specifications

   graphic  Smaller brakes
available.		   brake photo
Torque range = 0.3 - 20   to  400 Newton-meters. 

View in inch units
5 solid shaft models
Brake photo		  Typical applications:
  • Adjustable tension for unwinding webs
  • Load simulation - for testing
  • Torque limiting
  • Soft stops
2 hollow shaft models
Hollow brake photo
graphic

Mount with shafts horizontally only
Model  KB-5   Model PHB-100

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

Characteristics - With no electrical excitation, the shaft freely rotates.
With electrical excitation, the shaft becomes coupled to the case.

While the load torque is less than the output torque, the shaft won't rotate.
When the load torque is increased, the brake will slip smoothly at the torque level set by the coil input current.


Use the sizing information to select the proper brake.

Brake Specifications
MODEL

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

(N-m)		 image 24v
 Coil		 Maximum
Overhung
Load

(Newtons)		 Max.
RPM		 Weight

(kg.)		 Data Sheets

image PDF logo		 Drawings

image		 Optional
Electric
Fan
Cooling
image
Input
Current
(amps)
 KB-2.5 Solid

icon		 0.3 - 20 1.3 400 1800 8.6 KB-2.5
data sheet		 PDF icon DXF -
 KB-5 0.7 - 50 2 550 14 KB-5
data sheet		 PDF icon DXF
 POB-100 0.7 - 95 2.4 780 33 POB-100
data sheet		 PDF icon DXF PFB-100
 POB-200 3 - 175 2.7 890 53 POB-200
data sheet		 PDF icon DXF PFB-200
 POB-400  6 - 400 3.3 1450 102 POB-400
data sheet		 PDF icon DXF PFB-400
 PHB-50 Hollow
icon		 2 - 44 0.80 550 1000 11 PHB-50
data sheet		 PDF icon DXF -
 PHB-100  3.4 - 100  2 780 21 PHB-100
data sheet		 PDF icon DXF

DRAWINGS:   PDF-Adobe Acrobat.        DXF-Import into your CAD program.



Heat Dissipation
MODEL Heat Dissipation  (watts) Compressed Air
at
100 RPM		 at
1000 RPM		 with compressed air
or electric fan
cooling		 Pressure
(Pascals x 1000)		 Flow Rate
(meters3 / minute)
KB-2.5 130 175 260 28 0.17
KB-5 190 275 425 34 0.20
POB-100
PFB-100		 300 500 800 62 0.28
POB-200
PFB-200		 425 800 1200 48 0.17
POB-400
PFB-400		 550 1200 1900 145 0.40
PHB-50 250 400 -
PHB-100 400 800
Fins on internal rotor move air which increases cooling with increasing RPM.

air fitting photo Compressed air cooling - Clean, dry compressed air may be used to increase cooling.
The case has a BSPT threaded port.
Solid shaft brakes only.		   Electric Fan - for the same cooling rating as compressed air. Optional, for brakes POB-100, POB-200 & POB-400 only.
Use part numbers PFB-100, PFB-200, PFB-400.		 fan on brake photo

coupling photo   Adapts the brake's
metric shaft
to your
inch or metric shaft.
Flexible
Couplings
           
Power Supply
for large brakes.		   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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