POLY-NORM® coupling from KTR

The POLY-NORM® coupling from KTR is a torsionally flexible, puncture-proof shaft coupling. It is used in almost all areas of general mechanical engineering, as well as in the pump industry and compressor technology. Thanks to its compact, space-saving design, the POLY-NORM® coupling compensates for shaft misalignments of all types. Vibrations and drive impact are compensated, and the torque is securely transmitted.


The advantages of the POLY-NORM® coupling:

  • torsionally flexible
  • maintenance-free
  • puncture-proof
  • compact
  • can be axially inserted
Product information
BrandKTR
Design / modelsstandard, also available in other designs (e.g. taper version)
Antistatic (Ex)yes (in accordance with EC directive 94/9/EC); ATEX label as a standard - without added charge
Elastomer ringsNBR or T-PUR (depending on size)
Hub materialGJL grey cast iron
Borescylindrical bores, special bores available on request
An alternative toPex from Desch and N-Eupex from Siemens-Flender

Competitive advantage of the KTR POLY-NORM® coupling

  • symmetrical hub structure, the same on both sides of the POLY-NORM® coupling (in contrast to competitor products with cam and pocket section)
  • the elastomer part of the POLY-NORM® coupling is a connected elastomer ring (in contrast to competitor products, which consist of individual parts)
  • installation, identification and warehouse storage are therefore made significantly easier