Motor Torque - Power vs RPM Explained

AI Thread Summary
A motor's nominal torque is typically specified at a certain RPM, and it varies with speed. For a variable speed motor rated at 3hp and running from 0 to 3000 RPM, the torque will change across the RPM range. To determine the appropriate torque for connecting to a reducer, it's essential to obtain the motor's torque curve. This curve provides detailed information about torque at different RPMs. Contacting the motor vendor is recommended to acquire this data for accurate application.
stan
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hi

does anyone knows what exactly is a motor's nominal torque.

for example, if i have a variable speed motor that runs from 0 to 3000rpm and its rated power is 3hp, then are there various nominal torque for different rpms?

then which should i choose to if i need to connect it to a reducer?
thanks for any help.


stan
 
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The rated torque should be given at a specified RPM or the rated power should be given at a specified RPM to calculate the available torque. The torque will definitely vary as the speed changes. You need to get a torque curve for the motor to know exactly what you have to deal with. The vendor of the the motor will be able to provide that if you ask for it.
 

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