Specially designed for heavy industrial applications Renold's Hi-Tec PM range of couplings provides exceptional protection against severe shock loads and vibration. Maximum torque 7000 kNm.


The Standard Range Comprises

  • Shaft to shaft
  • Flange to shaft
  • Mill motor coupling
  • Brake drum coupling


  • Metal manufacture
  • Mining and mineral processing
  • Pumps
  • Fans
  • Compressors
  • Cranes and hoists
  • Pulp and paper industry
  • General heavy duty industrial applications    


  • Severe shock load protection
  • Intrinsically fail safe
  • Maintenance free
  • Vibration control
  • Zero backlash
  • Misalignment capability
  • Low cost


  • Giving protection and avoiding failure of the driveline under high transient torques
  • Ensuring continuous operation of the driveline in the unlikely event of rubber failure or damage
  • With no lubrication or adjustment required resulting in low running costs
  • Achieving low vibratory loads in the driveline components by selection of optimum stiffness characteristics
  • Eliminating torque amplifications through precompression of the rubber elements
  • Allows axial and radial misalignment between the driving and driven machines
  • The PM Coupling gives the lowest lifetime cost 

Construction Details

  • The PM Coupling range is manufactured in steel. Driving flanges up to and including PM60 are steel forgings to BS970 grade 070 M55. Driving flanges PM90 to PM7000 and all inner and outer members up to PM7000 are steel casting to BS 3100 grade A4
  • Separate rubber elements with a choice of grade and hardness, styrene butadiene with 60 shore hardness (SM60) being the standard
  • Rubber elements loaded in compression
  • Rubber elements are totally enclosed