would like to tell me about Magnetic particle brake?

Question

In film Printing M/c this type of break used pl write me to about this

Answer 1

Quote from magtrol.com:
"Unlike Hysteresis Brakes, magnetic particle brakes have a free flowing metal powder in the air gap. When a magnetic particle brake is energized, the particles form chains along the magnetic field lines linking the rotor to the housing. As the rotor rotates, the chains continuously shear, generating torque and heat. While magnetic particle brakes are capable of producing high torque, the friction between the particles can result in poor stability and repeatability, along with a high residual drag.

"Eddy current brakes develop torque by the direct magnetic linking of the rotor to the stator. This linking generates eddy currents in the driven rotor. Eddy current brakes must have a slip between the rotor and the stator to generate torque. "

Answer 2

Break or brake? They are two very different concepts. Magnetic braking is when a magnet travels through an electrically conductive tube. The moving magnetic field sets up an electric current which circles the tube. This produces a magnetic field that counteracts the first one, providing a slowing force.

You can easily test this if you drop a bar magnet through a narrow copper pipe. Note that copper is not a magnetic material, but it does conduct electricity well.

If that's not what you were asking, I suggest you stick to complete sentences with proper spelling, otherwise people will be confused about your question.