Products type

Series 4.03/4.03B   Series 4.05/4.05B

Series 4.25     Series 4.50     Series 4.53           

Series 4.60/4.61/4.61A

Series 4.62/4.63/4.64

Series 4.67/4.68/4.68A

Series 4.7     Current brushes

Series 4.40    Series 4.41    Series 4.42

detail see the specification from download file

 

The design of the magnetic field created by the coil prevents it from crossing the discs, therefore giving very fast reply times.

The special construction of these clutches and brakes gives them multiple applications: wrappers, printing machines, computers, etc. They are self-adjusting within broad limits and their torque does not vary once the first adjustment wear is complete.

 The transmission is performed by coupling the front teeth of the driving part with the corresponding teeth of the driven part.

In the case of the clutch, the magnetic body will be assembled on the drive shaft, that is, in continuous rotation, in order not to increase the inertia of the masses to be moved on each manoeuvre and also to avoid having to apply the current on each start on a collector at rest, which may cause sparks especially when it works in oil. Its main feature is that it has sintered discs that can work both dry and in an oil bath.

In their released position, they do not have a residual torque thanks to a spring in the casing. They have a dry running operation and the friction discs must be protected against all oil or grease projection. As the friction in clutching or braking also takes place between metal parts, it is normal that grooves and scratching occur with time.

 

The release time is short and the residual torque is zero. As these kinds of clutches do not admit slipping, determining their size is very important as their transmissible torque must be higher than the resulting torque Md or that corresponding to the maximum motor torque. The clutches may be fitted horizontally or vertically and in this last case, the drag plate will be in the bottom position.