What is the difference between rated speed and output speed in servo motors?

[baris45]

Hi Everyone,
What is the difference between "Rated speed nC(1/min)" and "output speed" in servo motors.

At the same time While "rated motor speed" is 1405(1/min) in gearbox catalogue, Rated speed is 3000 (1/min) in servo motor catalogue for the same gearbox.

If someone has a knowledge about this kind of servo motor and gearbox, can you inform to me.

Thanks in advance

 

[onatirec]

your question is not all that clear.

generally, rated speed is the max speed at the rated torque, whereas (max) output speed is unloaded. so rated speed is lower than max speed.

Gearboxes have their own speed ratings (depending on the lubrication, gear types, etc, etc). Often times a gearbox will function at a higher speed, but they might be noisier or it could affect lifetime. You should reach out to the supplier or manufacturer directly to clarify conflicting information.

 

[Baluncore]

Maybe it is referenced to rated power.
Power is torque multiplied by RPM.
There is no power at zero RPM, or at zero torque.
To get the rated power it operates at the rated RPM and rated torque.
Either the torque or the RPM could be greater than the rated value, but not both at the same time.

 

[baris45]

@onatirec and @Baluncore Thank you so much for your attention. Your answers brightened to my opinions.