new account »   log in »
 
 
English polskienglishdeutschрусский
 
 
 
 
 
 
         Products
back
 You are here:  Home Components Ema-elfa Products
» Electromagnetic Brakes
» Powder Brakes and Clutches
» Electrical self-braking motors
» Self-braking motors for quiet operation ( with brakes HPS..AT, 2HPS..BT )
» Electric DC motors ( direct current )
» Electrohydraulic Releases
» Tool boxes
» OZK , PZK discon. and changer-over switches (UL 94 V-0)
» EFM - Control buttons
» ZG , ZW - Sockets and plugs
» Cable Unwinders , Length Meter
» Cold rolled screws and spindles
» Services
»
 

Powder Brakes and Clutches

Technical description

 
Powder brakes and clutches make it possible to design drives where the (braking) torque may be  adjusted smoothly (programmed), as needed by the user, from the minimum value Mr  (residual torque Mr <= 1% Mn), up to the rated torque Mn  (Table).
   Upon engagement, the torque is smoothly increased with a  certain delay t09 [ms] (the time for reaching 90% of Mn), and upon disengagement the torque decays, also smoothly, with a delay t01 [ms] (the time for reaching 10% of Mn), whereas its value depends (almost linearly) on the coil current value (see charts).

For braking torque adjustment, we recommend using the EZP-51 controller with coil current set with a 0-10 kΩ potentiometer, or with a signal from 0-10 V (inductive, proximity, force etc.) sensors, or with a 4-20 mA current signal. The set torque is maintained with an accuracy of 5%, irrespective of the number of revolutions per minute or of the slipping between the body and the rotor.
 
The acceptable rpm ranges are as follows:
-   50-3,000 [min-1] for brakes,
-   50-1,500 [min-1] for clutches.

Powder brakes and clutches may operate with continuous slip, provided that the acceptable heat dissipation rating values specified in the table are not exceeded.

      Note:    
For clutches and brakes to operate properly, their rotation axis must be horizontal.

Sample fields of application

Any type of winders, drawing machines or printing machines where the material must be smoothly tensioned, with the tensioning element slipping.

 

 






 

Cantoni MotorBeselCelma InduktaEmitEma-ElfaFanaFormitNarmodFenes


  • Selected division: Components
    Selected company: Ema-Elfa

    Go to:

  • back    top 
    Privacy policy  |  Site map » Copyright © 2020 Cantoni Group. All rights reserved.
    Designed by MOUTON interactive
    follow us: Visitors: 6161216, today: 261