SHANDONG SAIGAO GROUP CORPORATION
SHANDONG SAIGAO GROUP CORPORATION
  • Coupling Diaphragm

Coupling Diaphragm

The coupling diaphragm consists of several groups of diaphragms (stainless steel sheets) that are staggeredly connected with the two halves of the coupling with bolts. Each group of diaphragms is composed of several stacks.

Diaphragm coupling relies on the elastic deformation of the diaphragm to compensate the relative displacement of the connected two shafts. It is a flexible coupling with strong metal components with stable performance. It does not need lubricating oil. It has a compact structure, good strength and long service life, no rotation gap, not affected by temperature and oil pollution, has the characteristics of stable acid and alkali resistance, suitable for shaft transmission in high temperature, high speed, and corrosive medium working conditions.


Features of Coupling Diaphragm

The coupling diaphragm consists of at least one diaphragm and two shaft sleeves. The diaphragm is pinned to the bushing and will generally not loosen or cause backlash between the diaphragm and bushing. Some manufacturers offer two diaphragms or three diaphragms with one or two rigid elements in the middle, and the two sides are connected to the bushing. The difference between a single-diaphragm coupling and a double-diaphragm coupling is the ability to handle various deviations. In view of the complex bending of the diaphragm, the single-diaphragm coupling is not suitable for eccentricity. The double-diaphragm coupling can be bent in different directions at the same time to compensate for eccentricity.


Coupling diaphragms are widely used in shafting transmission of various mechanical devices, such as water pumps (especially high-power, chemical pumps), fans, compressors, hydraulic machinery, petroleum machinery, printing machinery, textile machinery, chemical machinery, mines machinery, metallurgical machinery, aviation (helicopter), ship high-speed power transmission system, steam turbine, piston power mechanical transmission system, tracked vehicle, and high-speed, high-power mechanical transmission system of generator set, applied to high-speed transmission after dynamic balancing shafting has become more common.


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