couplingThe external dimensions, namely the maximum radial and axial dimensions, must be within the installation space allowed by the machine equipment. It shall be easy to assemble and disassemble, do not need maintenance, have a long maintenance cycle or be easy to maintain, replace wearing parts without moving two shafts, and be easy to align and adjustcoupling.

It is difficult to adjust the alignment of two axes in large machinery and equipment, and durable and easily replaceable parts should be chosencouplingMetal elastic element flexibilitycouplingGenerally flexible compared to non-metallic elastic componentscouplingLong service life. Sealed lubrication and non durable use are requiredcouplingIt will inevitably increase the workload of maintenance. For scenarios with long-term continuous operation and high economic benefits, such as the high-speed end of the rolling mill transmission system in metallurgical enterprises in China, the commonly used method is the gear typecoupling, toothed typecouplingAlthough theoretically capable of transmitting large torque, it must operate under good lubrication and sealing conditions to ensure durability. And it is necessary to regularly check the sealing condition, inject lubricating oil or grease, which requires a large amount of maintenance work, increases auxiliary working hours, reduces effective working time, and affects production efficiency. Internationally developed industrial countries have commonly replaced drum toothed couplings with diaphragm couplings that have a long service life, do not require lubrication or maintenancecouplingNot only does it improve economic efficiency, but it can also purify the working environment. Selection of elastic live pins developed in China for the transmission system of rolling millscouplingElasticity of fan-shaped blockscouplingNot only does it have a membranecouplingThe advantage is that it has good buffering and vibration reduction effect, and the price is cheaper.