Couplings can be selected using a service factor of 1.0 for applications involving no variations in torque transmission. Peak torque ratings or Momentary Overloads to be considered at 2.0 X continuous torque rating. A 50 milli second transient torque rating for the coupling is 3.4 X  continuous torque more... Couplings can be selected using a service factor of 1.0 for applications involving no variations in torque transmission. Peak torque ratings or Momentary Overloads to be considered at 2.0 X continuous torque rating. A 50 milli second transient torque rating for the coupling is 3.4 X  continuous torque more... Coupling  ratings as per the definitions of API 671 - 3rd edition. A minimum service factort of 1.5 to be considered . Peak torque ratings of the coupling is  1.35 X continuous torque rating. A 50 milli second transient torque rating for the coupling is 1.9 X  continuous torque more... contact Euroflex For  special adaptations or optimised designs