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WORKING PRINCIPLE
The main components of a powder magnetic brake or clutch are the
following:
• Primary body (A) containing the inductor winding (coil).
• Secondary body (B) or rotor.
The two bodies are coaxially mounted and spaced out by an aircore (C).
The aircore is fi lled with magnetic particles (powder).
Feeding with direct current the primary body, a magnetic
fi eld is created, which causes the thickening (solidifi cation) of the
powder in the aircore, producing a resistant torque
between the two bodies (A and B).
This torque is directly proportional to the power
feeding the inductor winding of the magnetic fi eld.
ASSEMBLY AND MAINTENANCE INSTRUCTIONS
• Magnetic powder brakes/clutches have to be mounted with
the shaft axle in a horizontal position, an inclination not higher
than 15° is allowed.
• Max. rotation speed is up to dimension P120= 3000 rpm
For model P170 max. rotation speed can be up to 3000 rpm with
dynamic balancing.
• Working temperature must not be higher than 100°C
• If the torque value decreases after a prolonged use, we recommend
to increase the current excitation of the magnetic fi eld.
If this is not enough,
INTERPRETATION OF IDENTIFICATION CODE
The identification code of magnetic powder brakes and clutches is composed by three main parts:
• The first part of code identifi es the size of the brake or of the clutch (P12, P35, P65, P80, P120, P170).
• The second part identifi es the product as brake with the letter “B”, or as a clutch with letter “C”.
• The third part of the code identifi es the type of cooling complement mounted: the radiator will be indicated by letter “R”, the fan will be indicated by sign: “V-220”, “V-110”, “V-24”, the fan’s alternated current is also identifi ed.
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