DBK Fan cooled brake/ air disc brake






 






The primary function of brakes is the conversion of mechanical energy into heat which is then dissipated into the atmosphere.






The amounts of heat which can be dissipated by air cooled disc brakes are dependent on a high rotational speed, large disc diameter, and large radiant surface. With the addition of an electric fan fitted to the centre of the housing, the best possible thermal power dissipation as achieved without high dependency on speed, and avoiding the need to increase the disc diameter in continuous slipping applications suitable for high heat dissipation.

Air disc brake advantage:






 






*Dimensionally smaller units, giving a more compact machine design






*Reduction in price due to smaller design






*Lower top speeds minimized the wear of the linings






*Constant controllable torque from a stable friction lining material






*Suitable for all types of applications






*Suitable for high heat dissipation

High Quality 24V DC Shaft Factory Hot Sell Powder Brake PB series
























Magnetic Powder Brake Notes






 






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






 






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






 






2. Concerning the service life






 






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 non-overloaded; 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.#

Structure and working principle





The magnetic powder clutch is composed of

active rotor (input shaft) and Yoke with excitation coil. The three parts are

assembled relative concentric and form a system which can rotate relatively.

The annular gap between active rotor and driven rotor is full of alloy powder

which has high magnetic conductivity.






 






The magnetic powder will be in the state of

loose when the current do not pass the excitation coil. The magnetic powder

will be thrown on the inner wall of active rotor. In this case, there will not

exist the interaction force between the active and driven rotor. So the

magnetic powder clutch is in the state of separation, no torque transmission

exits.






 






The magnetic powder in the working chamber

will link in a link state under the action of the magnetic flux generated from

the Yoke when the current pass the excitation coil. The magnetic powder clutch

can transfer torque relying on the shear force generated from magnetic chain

and the friction generated from the magnetic powder and working face. In this

case, the magnetic powder clutch is in the state of combination.






 






When the current is cut off, the magnetic

flux will disappear with the disappearance of the magnetizing current, the

magnetic powder will be in the state of loose under the action of gravity

again, and will be thrown on the inner wall of active rotor under the action of

the centrifugal force. In this case, the magnetic powder clutch will be in the

state of separation again.






 






The magnetic powder clutch and brake have

the same principle, the magnetic powder brake will form as long as the driven

rotor of the magnetic powder clutch is fixed.

Air disc brake advantage:






*Dimensionally smaller units, giving a more compact machine design 






*Reduction in price due to smaller design 






*Lower top speeds minimized the wear of the linings 






*Constant controllable torque from a stable friction lining material 






*Suitable for all types of applications

*Suitable for high heat dissipation























Applications:






* Printing systems: conveyors and in-feeders






*Wood-working systems: saws, wood-working machine, laminators


* Office equipment: electronic copy machines, calculators, fax machines, coin counters, printers


* Testing systems: lab machines, durability testers, measuring systems


* Food processing systems: meat cutting machines, cookie making machines, canning machines, noodle making machines


* Others: speed reducers, electroplating machinery, physics and chemistry machines, paper-making machines, pulp processing machines.