These couplings need neither lubrication nor maintenance as the components are wear-free and the design ensures no ingress of abrasive dirt and moisture. Sure-Flex couplings use a synthetic rubber or Hytrel thermoplastic flex element to transmit torque – up to 8.2kNm – and to accommodate shaft misalignment. Indeed, they have exceptional torsional flexibility and their 4-way flexing action absorbs shock, vibration, misalignment and end float.
‘Fatigue test to failure’ results confirm that the Sure-Flex polymeric flex elements last twice as long as their nearest competitive coupling and up to 30 times longer than the remaining competitive models.