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Product image KTR-SI FRE Idle rotation overload system flange type

with flange type

800 - 60,000 Nm (and above) / Idle rotation overload coupling

Idle rotation overload coupling (load-separating) with flange type

The overload coupling KTR-SI FRE is an idle rotation safety coupling with flange type to connect toothed belt pulleys or sprockets.

Our idle rotation overload coupling (load-separating) with flange type can be combined with our ROTEX jaw couplings, GEARex all-steel gear couplings or RADEX-N steel laminae couplings.

Special versions of this overload coupling (e. g. flange-to-flange) are available on request.

Applications of our idle rotation overload coupling KTR-SI FRE (safety coupling):

  • shredders (recycling)
  • rolling mills (steel industry)
  • extruder drives
  • test bench technology
  • general heavy-duty drives


  • Overload coupling with an idle rotation version
  • hardened surfaces
  • maintenance-free
  • precision ±15 %
  • corrosion-protected

Product Details