The symbol for the torque of the reducer is N.m, which is 9550 x motor power/motor speed x reducer speed ratio x efficiency of use; 9550 is a fixed number, and the power of the motor is several thousand watts (KW) that is matched with the reducer. Divided by the speed of the motor, the minimum speed of a domestic motor is 1390 rpm, and the maximum speed is 1490 rpm. When we calculate it, we calculate it as 1400 rpm, which is not much different
If you want to be accurate, you can refer to the motor sample. For example, 0.37KW is 1390 revolutions per minute, 3KW is 1420 revolutions per minute, and 11KW is 1460 revolutions per minute; The speed ratio of the reducer is not explained simply. The efficiency of use can be calculated as follows: for hard toothed gear reducers with poor efficiency, it is calculated as 0.9, and for good ones, it is calculated as 0.95. However, for imported reducers, it is generally calculated as 0.95. For reducers with worm gears with poor efficiency, it is calculated as 0.65, and for good ones, it is calculated as 0.7.
The above formula introduces how to calculate the output torque of the reducer, but when choosing a motor, it is necessary to choose the motor power that matches the torque force carried by the reducer. Different power motors should be selected for different speed ratios, as excessive power can reduce the lifespan of the reducer.