hi. i want to buy a new motor.in the nameplate there is difference between i and rpm.
in the available motor i:105.28 and rpm is 1300/12
why 1300/12=108.33 is different from i=105.28
do i should buy a gearmotor with i=105.28 or i=108.33
We have no clue with the information provided.
Please contact the manufacture of the motor or the equipment manufacture for that advice.
Gear boxes are designed for the RPM input
, the torque rating. Duty cycle. The out put of the gear box is based on the input with the desired gear ratios. Output torque, and rpm.
A puley setup would be the same. Which is unknown here.
1. I speculate that 105.28 is the reducer's precise ratio, and the ratio that you calculated is an "approximate" e.g. a practical motor's angular speed will not be 1300 RPM etc, due to various reasons, including slip, and
2. A ratio of 105.8 exists according to the catalogues available following: