Magnetic Powder Clutch When Using Carefully

1. The magnetic powder brake and the magnetic powder clutch use DC24V DC as the excitation power source, and the excitation current 1A-4A can be selected according to the size of the application.


2. Magnetic powder brakes and clutches often cause the magnetic powder to gather under the transportation process, blocking the working gap, so that occasionally “catch” phenomenon occurs before use. At this time, only the magnetic powder brake and the clutch should be rolled in the circumferential direction or leveraged. The coupling allows the magnetic powder to be dissipated, and then the running operation can be carried out: after running for 20 seconds of the rated current, the power is turned off and then turned on again, and it can be used normally several times.


3. The magnetic powder of the magnetic powder brake with rated torque above 2000N·m is additionally installed, and can be gradually injected by the magnetic powder filling hole before running or during running. Note that there must be no excitation current when adding powder.
The hole of the magnetic powder brake ring is a magnetic powder filling hole, and the small-sized brake is a special screw hole on the circumference of the circumference.
Special note: It is strictly forbidden to add lubricating oil and water into the magnetic powder filling hole.

4. Naturally cooled magnetic powder brakes and clutches can be cooled by fans and blowers. Single-cooled and double-water-cooled magnetic powder brakes and clutches of 50N·m or more must be cooled by water. Otherwise, the working surface will generate high temperature, which will affect the use. life.

5. It is strictly forbidden to knock on the coupling. Note that the center height, concentricity, and coaxiality are adjusted during installation.
 
6. Use the magnetic powder clutch with a regular installation method (using the high-speed rotating side as the input side). If the mechanical structure has to be installed in the reverse direction of the shaft, be sure to use it below 1000R/MIN. If the input shaft and the output shaft are installed in reverse, the machine will idle for a long time, and the magnetic powder will be stirred, which will greatly shorten the service life of the magnetic powder clutch. 2, please pay attention to moisture. If the magnetic powder gets wet, the performance will become unstable, so be careful not to let oil or moisture invade the inside. In particular, when it is installed in a gear box, the oil will penetrate into the inside through the shaft, so it is completely sealed with a film.
 
7, please pay attention to the surface temperature. The maximum surface temperature caused by continuous operation is 90 degrees or less during operation. When the value exceeds this value, the durability is greatly reduced. Be sure to use the above-mentioned limit temperature as the standard, and be sure to keep it within the allowable sliding work rate when using it.
 
The magnetic powder brake is a combination of a transmission unit (input shaft) and a driven unit (output shaft). The space between the two sets of cells is filled with granular magnetic powder (about 40 microns of rest). When the magnetic coil is not conducting, the torque will not be transmitted from the transmission shaft to the driven shaft. However, if the coil is electromagnetically energized, the magnetic powder will attract hardening due to the action of the magnetic force, and the torque will be transmitted between successive slidings. . The principle of the magnetic powder brake is similar to that of the magnetic powder clutch, except that the transmission unit is turned into a fixed unit.