HW-FZ magnetic powder brake hollow shaft type 6/15/25/50/100/200 N.m for unwinding machine

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. 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.

Application

Magnetic powder brakes are particularly suitable to use in the printing sector, flexographic and rotogravure machines, but also in food preparation areas or locations with stringent hygiene and dust emission tolerances. Because of their very low residual torque, they are ideal to use in the food packaging sector, on laminating or plastic film machines, and for all applications with web tension.