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3 Tips to Solve Common Faults of Magnetic Particle Brakes

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Magnetic Particle Brakes

Common faults and solutions during the unwinding process of the hollow shaft magnetic particle brake.

MPB-F Magnetic Particle Brakes
MPB-F Magnetic Particle Brakes

During the unwinding process, it is unavoidable that the machine suddenly breaks down. The following measures can be taken in this situation:

  1. When there is a problem with the braking, it can cause the overprint to deviate. When it is found that the overprint deviates a lot, and the adjustment of the plate register is invalid, you can re-check the magnetic particle brake of the unwinding. The method is: after stopping the machine, hold the film roll to rotate by hand. If there is no problem with the magnetic particle brake, do not turn it or move it slightly when turning it by hand. If the magnetic particle in the magnetic particle brake has leaked, it can be rotated with light force when turning by hand. At this time, you should ask the relevant personnel to add a magnetic particle and then it will return to normal.
  2. The unwinding traction motor or bearing of the hollow shaft magnetic particle brake is abnormal; if the traction motor rotates abnormally or the bearing is damaged, it will cause uneven winding, instability, wrinkles, and other phenomena. Hold, jump up and down. It should be repaired in time.
  3. The hollow shaft magnetic particle brake fails to connect to the coil. Check to confirm whether the length and position of the plastic tape meet the requirements. Repair in time. Poor unwinding stability and wrinkling; mainly because the tension setting is not appropriate, you can adjust the parallel rollers.

Magnetic particle clutch/brake operation

Magnetic particle clutch/brake operation should pay attention to the following two points:

Watch out for moisture

When the magnetic particle gets wet, its performance becomes unstable, so be very careful not to let oil or moisture penetrate inside. Especially when the magnetic particle clutch is installed in the gearbox, the oil will penetrate into the interior through the shaft, so it should be completely sealed with a film.

Pay attention to the surface temperature

The maximum surface temperature caused by the continuous operation is below 90 degrees during the operation of the magnetic particle clutch. When this value is exceeded, the durability will be greatly reduced. Be sure to use the above-limit temperature as a standard, and be sure to keep within the allowable slip operation rate when using the magnetic powder clutch.