What is the difference between a plum blossom coupling and an elastic pin coupling?

　　The working principle of the quincunx elastic coupling is to install an integral quincunx-shaped elastic ring between the claws of two half-couplings of the same shape, and transmit the torque through radial extrusion to realize the coupling of the two half-couplings. Connection, when the two axes are relatively offset, the elastic element undergoes corresponding elastic deformation, which plays a role of automatic compensation;

　　The elastic pin coupling is a pin made of several non-metal elastic materials, which is placed in the flange hole of the two halves of the coupling, and the two halves of the coupling are connected by the pin.

　　The characteristics of plum coupling:

　　1. Compact, no backlash, providing three different hardness elastomers;

　　2. It can absorb vibration and compensate radial and angular deviation;

　　3. Simple structure, convenient maintenance and easy inspection;

　　4. Maintenance-free, oil-resistant and electrical insulation, working temperature 20℃-60℃;

　　5. Plum blossom elastomer has four petals, six petals, eight petals and ten petals;

　　6. The fixing methods include top wire, clamping and keyway fixing.

　　Features of elastic pin coupling:

　　1. The working temperature is -20～+80℃; the nominal torque of transmission is 40～20000N.m.It has the ability to compensate the relative offset of the two axes and to reduce vibration.The work of the elastic sleeve is compressed and deformed. Because the thickness of the elastic sleeve is thin, the volume is small, and the elastic deformation is limited.

　　2. Relatively simple, easy to manufacture, no lubrication, no need to bond with metal vulcanization, easy to replace the elastic sleeve, no need to move the half coupling, suitable for the installation base with good rigidity, high centering accuracy, low impact load, and reduction Small and medium-power shafting transmission with low vibration requirements.

　　Based on the above respective characteristics, which is better, plum blossom coupling or elastic pin coupling? I think that these two kinds of couplings have their own advantages. The plum blossom coupling has compact structure, insulation, and pin coupling transmission. Large torque, easy disassembly and assembly, without lubrication.The applicable working conditions are also similar. The big difference is that the structure is different and the elastic elements are different, so under the same outer diameter of the coupling, the torque of the pin coupling is slightly larger.Of course, the noise of the column pin may also be a little bit louder; they are more suitable for use in water pumps, fans and other parts; the column pin is convenient for maintenance.If the motor is forward and reverse, the plum blossom may be a little bit.