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
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