General Details



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Torque up to 2,500,000 Nm.
Bore Up to 700 mm

The Trumy diaphragm couplings are high-performance couplings for rotating machines. They absorb the shaft misalignments by deformation of the flexible metallic diaphragms with specific profile, while transmitting the torque. The coupling has advantage of high strength, light weight, big power density, exceptional misalignments accommodating capacity and small additional force on equipment.  It has found a wide range of applications to pumps, fans and compressors driven by gas turbines, steam turbines and electric motors. Especially for high-speed/high-power turbine compressor sets.

The flexible elements, diaphragms made of high-strength stainless steel, bring to the coupling high strength, light weight and inherent anticorrosion capability. Thinnest and curve profile diaphragms absorb shaft misalignments by elastic deformation, while transmitting torque.


The Trumy diaphragm couplings offer:

  • High Strength, big flexibility, better compressive performances
  • Lighter weight, less additional bending moment, more commensurate with the requirement of the machines coupled
  • More Misalignment capacity
  • Longer service life
  • Maintenance free

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About RSV
Our organization is a specialist in the field of mechanical power transmission coupling, where we have grown steadily over the years and have established our distinct identity for ourselves as a reliable and dependable company providing solution to our customers for their critical couplings applications.

Our motto is to supply quality product to our clients as per their specific requirements and to solve their problems faced in critical applications.

We have a comprehensive inventory of various couplings. We also deal in imported couplings for which we are authorized.