The Lo-Rez spring-type flexible coupling, developed by a Canadian company and on the market since 1958, is now available through the Wichita Co. Ltd, of Bedford. Helical compression-springs provide the coupling with a high degree of torsional flexibility, together with relative freedom under axial and radial misalignment, and the drive system's low natural frequencies allow critical speeds to be designed to occur below minimum operating speeds. Torsional stiffness is maintained within close tolerances; transient torsional vibrations of between three and five times the full-load torque capacity can be accepted intermittently. Working parts are readily accessible. The article describes these and other features of Lo-Rez spring-type flexible couplings, which are available in a wide range of sizes and cover torque ratings of up to 430,000 Nm. Information is also given on other Lo-Rez products, including RT torsionally- soft couplings <which can transmit thrust and are stated to be ideally suitable for propeller shafts; their sound insulation is another advantage, e.g. in submarines; the coupling is being incorporated in the transmissions of new minehunters of the US Navy>, elastomeric flexible couplings, and <a 1980 patent> mechanically- tuned viscous torsional-vibration dampers.

  • Supplemental Notes:
    • Shipbuild. Mar. Engng. Intl., 106 <1983>, p.176 <Apr.> (1 1/2 pp., 2 diag., 1 phot.)
  • Publication Date: 1983


  • English

Subject/Index Terms

  • Subject Areas: Marine Transportation;

Filing Info

  • Accession Number: 00685087
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Aug 14 1995 12:00AM