How to Adjust the Torque of a Magnetic Particle Clutch

How to Adjust the Torque of a Magnetic Powder Clutch?

Magnetic powder clutches primarily use a direct current of 24 volts. When the magnetic coil of the magnetic powder clutch is not conductive, torque will not be transferred from the drive shaft to the driven shaft. However, if the coil is electromagnetically energized, under the effect of the magnetic force, the magnetic powder will occasionally harden during the attraction process, and torque will be transmitted during successive sliding. Similarly, in the connection of equipment, the magnetic powder clutch is used for its ability to set torque and not require further adjustment. The torque control range of magnetic powder clutch manufacturers is very wide, with high control accuracy. The transmitted torque is in a correct proportion to the excitation current, allowing for high-precision control.

Due to the linear relationship (proportional) between the torque of magnetic particle clutches and brakes and the excitation current, adjusting the torque of the magnetic particle brake clutch is quite simple. Simply by modifying the size of the excitation current, the torque of the magnetic particle clutch brake can be controlled. The automatic tension controller outputs a controllable DC 0~24V or 0~4A through the tension controller, which drives the magnetic particle clutch brake to achieve constant tension control during winding and unwinding. This makes tension control easy and straightforward. The fundamental range of torque and excitation current is approximately 5~100% of the rated torque.

Magnetic particle clutches transmit torque using magnetic particles under electromagnetic effects, featuring a linear relationship between excitation current and transmitted torque. They offer a stable slip torque. When the excitation current is maintained constant, the transmitted torque is unaffected by the speed difference (slip speed) between the driven and driven components. In other words, the static friction torque is indistinguishable from the dynamic friction torque, allowing for stable constant torque transmission. Generally speaking, friction parts are prone to overheating, even burning, during continuous sliding. Therefore, it is necessary to prevent the heat generation caused by slip.