1. Calculate Motor Torque

       When we know the motor watt, we can caculate the motor torgue using the following formula.

     Motor TorqueT(N.m)=(KW x 9500)/RPM

Motor watt exchange motor torque table

2. Service Factors: After calculate the motor torque, according to the table bellow, adjust the factor K

3. Caulate Coupling Torque

    When caculate the motor rated torgue and select the adjustment factor, the coupling torque can caculate using the following formula.

T>T1xK1xK2xK3

                                                    T1:Motor rated torque                                         

                                                    K2:Corrected coefficient by operating hours

                                                    K1:Operating coefficient by load character       

                                                    K3:Corrected coefficient by starting and braking