A magnetic coupling is a device that uses a magnetic field to achieve power transmission, and its rotational speed range is determined based on the calculation of the allowable linear velocity and the maximum outer edge size of different material strengths. The allowable speed range of couplings of different materials, varieties and specifications is different, and changing the material of the coupling can increase the allowable speed range of the coupling. For example, the permissible speed of steel is greater than that of cast iron.
When choosing a magnetic coupler, we need to consider the type of equipment connected to the two shafts of the reducer, the speed of the required transmission shaft, the size of the load, the installation accuracy of the two parts to be connected, the smoothness of the rotation, etc., and according to the characteristics of various couplings, choose a type of coupling that is suitable for us.
For high-speed transmission shafts, couplings with high balance accuracy, such as diaphragm couplings, etc., should be selected, rather than slider couplings with eccentricity. For high-power heavy-duty transmissions, spur couplings or drum couplings can be used. For transmissions with severe impact loads or requirements to eliminate the torsional vibration of the shafting, tire couplings can be selected.
On the premise of satisfying the convenient performance, the magnetic coupling that is easy to assemble and disassemble, maintenance-free and non-replacement should be selected. The non-contact magnetic coupling is not only simple in structure, air transmission, but also easy to assemble and disassemble, and can be used for low-speed, rigid transmission shafts. It will not pollute the use environment, and has good comprehensive ability, and is widely used in general large, medium and small power transmission.
Magnetic coupling devices have some unique advantages over other types of couplings. For example, it can achieve high torque and low speed (about 3000 rpm or less) and low torque high speed (about 36000 rpm or less). In addition, the installation and maintenance of magnetic couplers is very cost-effective in long-term use. It can realize non-contact transmission, and has the advantages of simple structure, convenient maintenance, and wide range of speed regulation.
In short, when choosing a coupling, we need to choose the appropriate type and specification according to the actual situation, and fully consider various factors to meet our use requirements. At the same time, we also need to pay attention to some common problems, such as the need to choose a slide coupling when the radial displacement is large, and the universal coupling can be used for the connection of two shafts with a large angular displacement or intersection. Magnetic couplers