HW-FL Magnetic powder clutch for printing machines double shaft type for printing machine

General introduction

The magnetic powder clutch is composed of the active rotor (input shaft), driven rotor(output shaft) and yoke with an excitation coil. The three parts are assembled relative concentric and form a system that can rotate relatively. The annular gap between the active rotor and the driven rotor is full of magnetic alloy powder which has high magnetic conductivity.

The magnetic powder will be in the state of the loose situation when the current does not pass the excitation coil, the magnetic powder will be thrown on the inner wall of the active rotor, in this case, there will no exist the interaction force between the active and driven rotor. 

Technical parameter

Features

The magnetizing current has a linear relationship with torque

The transmission torque has a linear relationship with the magnetizing current. The size of the torque can get controlled within a larger range. Under normal circumstances, the magnetizing current

Has a linear relationship with transitive torque within the range of 5%-100% rated torque.

Stable slip torque

The slip rotational speed between the driven rotor and active rotor does not affect the transitive torque when the magnetizing current remains unchanged, as shown in chart 4. That is to say, the static friction torque and the dynamic friction torque have no difference. Therefore, the torque can remain constant stably. The features are applied to tension control, users can control the tension of the roll material effectively as long as adjustment the magnetizing current accurately.

Prevention of heat phenomenon from slip

The friction part will generate heat inevitably or even be destroyed when it keeps continuously sliding.

But this device has a complete cooling set, it will not generate a lot of heat after a long time running and it has a long service life.

Notes

Don’t overload, meanwhile cool to the appropriate temperature.

The value of the torque/rotational speed/slip power should be less than the rated value, The cooling model(natural cooling. forced air cooling/water cooling)should depend on the maximum slip power when it works and the cooling air should filter the water and oil. The temperature detector and the alarm device should be installed to prevent high temperatures which can affect the service life of the magnetic powder. (the highest temperature is 80 degrees)

Recommend collocation

automatic tension controller TB-1000

manual tension controller (digital/pointer)

Mini electrical tension controller