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.