Plum-type couplings have high torque, vibration absorption, and elastic spacer press-in type; additional shaft holes can be machined, and special product customization is also supported.
The rigid coupling does not have the cushioning ability and the ability to compensate the relative displacement of the two axes. It requires strict alignment of the two shafts, but the coupling has a simple structure, low manufacturing cost, and assembly and disassembly. It is easy to maintain and can ensure high alignment of the two shafts, large transmission torque and wide application. Commonly used are flange couplings, sleeve couplings and clamp couplings.
Flexible couplings can be further divided into inelastic flexible couplings and flexible couplings with elastic components. The former class only has the ability to compensate the relative displacement of the two axes, but it cannot buffer the vibration, and the common one is slippery. Block coupling, gear coupling, universal coupling and chain coupling; the latter type contains elastic elements, in addition to the ability to compensate the relative displacement of the two axes, it also has the function of buffering and damping. However, the transmitted torque is limited by the strength of the elastic element, and generally less than the flexible coupling of the non-elastic element. Common elastic sleeve pin couplings, elastic pin couplings, plum-shaped couplings, tire type Couplings, serpentine spring couplings and reed couplings.