A diaphragm coupling is a coupling in which several sets of diaphragms, that is, stainless steel sheets, are interconnected by 

bolts and the like. Each group of diaphragms is composed of several stacked diaphragms. The diaphragm is divided into two 

different forms: connecting rod type and whole piece type. The compensation principle of the diaphragm coupling mainly 

relies on the elastic deformation of the diaphragm to compensate for its relative displacement. The diaphragm coupling has 

a long service life, a relatively compact structure, is not affected by temperature and dirt, and has high acid and alkali resistance. 

It is suitable for shaft transmission systems with corrosive industrial applications.

The compensation principle of the diaphragm is mainly to compensate for the manufacturing and installation errors and 

deformation load-bearing conditions that occur when the machine is running, as well as the radial and angular offsets caused 

by the increase and decrease of temperature. And because the diaphragm coupling is an elastic element flexible coupling, its 

own properties are elastic cushioning, no noise and no lubrication. It is an ideal product for general couplings today. The 

production of diaphragm couplings is composed of at least two sleeves or one diaphragm. Because the diaphragm is professionally 

nailed to the sleeve, there will generally be no looseness or two diaphragms. conflict with each other. Of course, there are also some 

manufacturers that provide us with two or three diaphragms with one or more rigid components in between. In this way, diaphragms 

are divided into single-piece diaphragm couplings and double-piece diaphragm couplings. The difference between them is that they 

can skillfully handle various deviation problems and compensate for the problem of center deviation at one time. The diaphragm is 

the core component of the diaphragm coupling product. The diaphragm can be divided into many forms according to its shape, but 

the basic compensation principles are the same. It plays an extremely important role in water pumps, hydraulic machinery, aviation 

and other fields.