HW-FZ hot sale high quality hollow or single shaft 24v magnetic powder brake

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 of running and it has a long service life.

Application

Due to the features of the magnetic powder clutch and brake, they have been widely used in papermaking, printing, plastic items, rubber industry, textile industry and dyeing, wire and cable, metallurgy industry, and tension control of winding and unwinding in roll material processing industry. A complete set of schemas of the tension control system is as follows:

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).

The life of the magnetic powder clutch and brake rely on the life of the magnetic powder. Generally speaking, its service life is 4500-7500 hours in the state of nonoverloaded, but its service life can extend several times in some cases, such as the working torque of the magnetic powder clutch/brake, relative slip rotational speed and slip power can be reduced to 50%-70% of the rated value. This is to say, the margin can be enlarged as soon as possible when designing.

Concerning the torque

After the magnetic powder clutch and brake work, the magnetic powder will be in grinding at the beginning which leads to the torque decreasing slightly, but the gap can be compensated by adjusting the current.