According to different working conditions, the coupling must have the following properties:
(1) Removability. The movability of the coupling refers to the ability to compensate for the relative displacement of the two rotary members. Factors such as manufacturing and installation errors between connected components, temperature changes during operation, and loaded deformation all place demands on the removability. Movable performance compensates or relieves additional loads between shafts, bearings, couplings and other components due to relative displacements between the rotating components.
(2) Buffering. For frequent load starting or working load changes, the coupling needs to have a damping and damping elastic element to protect the prime mover and the working machine from being damaged or damaged.
(3) Safe, reliable, with sufficient strength and service life.
(4) The structure is simple, easy to assemble, disassemble and maintain.