Torque and RPM

  • #1

Main Question or Discussion Point

What is the use of torque of a motor? Is it not the RPM that is needed? And up to what percentage the torque could be reduced to increase the RPM?
 

Answers and Replies

  • #2
russ_watters
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Welcome to PF!
What is the use of torque of a motor? Is it not the RPM that is needed?
Torque is what applies rotational force to things. Like tightening a large bolt or rapidly accelerating a car requires a lot of torque.
And up to what percentage the torque could be reduced to increase the RPM?
The relationship depends on the motor.
 
  • #3
Baluncore
Science Advisor
2019 Award
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Torque multiplied by RPM is Power.
A gearbox can transform power between torque and RPM.
There are limits to high RPM with low torque due to friction.
 

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