Ningbo Yinzhou Shengguang Motor Co.,Ltd.

Torque Caculation method of speed control motor and geared motors:
1. Motor without gearbox, after adjust speed, output torque is "Mn",output speed is "n", motor speed at 1300 rpm, torque is "M1300",when the motor turn 90 degree, output toque is "M90",the formula is Mn=(M1300-M90)/1200X(n-90)+M90.
.2. Motor after geared reduction, the torque is "Mi", ratio is "i" ,the running efficiency is "η",the formula Mn X i X η
Note: running efficiency
a\reduction ratio 1:4-1:18, η ≈81%
b\reduction ratio 1:25-1:36,η ≈73%
c\reduction ratio above 1:50,η ≈66%