Innovative coupling designed to satisfy a vast spectrum of diesel drive and compressor applications.


The Standard Range Comprises

  • Flywheel to shaft
  • Shaft to shaft
  • Flange to flange
  • Flywheel to shaft ½ stiffness
  • Shaft to shaft ½ stiffness 

Spanish F100 frigate fitted with four Renold Hi-Tec MSC 12.5 half stiffness couplings between the Navantia MTU diesel engine and the alternator for power generation. Two Renold Hi-Tec DCB 848.0 cardan shaft couplings are fitted to the cruise diesel engines on the main propulsion drive. 


  • Marine propulsion
  • High power generator sets
  • Reciprocating compressors


  • Intrinsically fail safe
  • Control of resonant torsional vibration
  • Maintenance free
  • Severe shock load protection
  • Misalignment capability
  • Zero backlash
  • Noise attenuation


  • Ensuring continuous operation of the driveline in the unlikely event of rubber damage.
  • Achieving low vibratory loads in the driveline components by selection of optimum stiffness characteristics.
  • Radial removal of rubber elements allows replacement without moving driven or driving machine.
  • No lubrication or adjustment required resulting in low running costs.
  • Avoiding failure of the driveline under short circuit and other transient conditions.
  • Allows axial and radial misalignment between the driving and driven machines.
  • Eliminating torque amplifications through pre-compression of the rubber elements.
  • Giving quiet running conditions in sensitive applications by the elimination of metal to metal contact.

Construction details

  • The driving member is manufactured in steel to BS3100 Grade BT2
  • The inner member is manufactured in steel to BS3100 Grade A6
  • The driving flange is manufactured in steel to BS3100 Grade A3
  • Rubber elements can be fitted and removed without moving the driving or driven machine.