Coupling performance requirements and how to choose

Coupling Performance Requirements According to different working conditions, the coupling should have the following properties:

(1) Portability. The mobility of the coupling refers to the ability to compensate for the relative displacement of the two rotating components. Factors such as manufacturing and installation errors between the connected components, temperature changes during operation, and load deformation all impose requirements on removability. The movable performance compensates or relieves the additional load between shafts, bearings, couplings and other components caused by the relative displacement between rotating components.

(2) Cushioning. For occasions where the load is often started or the working load changes, the coupling needs to have elastic elements that act as buffers and dampers to protect the prime mover and working machine from damage or damage.

(3) It is safe, reliable, and has sufficient strength and service life.

(4) Simple structure, convenient assembly, disassembly and maintenance. Coupling Selection Selection of Coupling Types When choosing a coupling type, the following items should be considered.

① The size and nature of the required transmission torque, the requirements for buffering and vibration reduction functions, and whether resonance may occur.

② The relative displacement of the two axis axes caused by manufacturing and assembly errors, shaft loading and thermal expansion deformation, and relative movement between components.

③ Permissible external dimensions and installation methods, necessary operating space for easy assembly, adjustment and maintenance. For large couplings, it should be possible to disassemble and assemble without the shaft moving axially. In addition, conditions such as working environment, service life, lubrication, sealing and economy should also be considered, and then a suitable coupling type should be selected with reference to the characteristics of various couplings.