low speed, high torque - 250RPM @ 12Nm

[tjagiello]

Hi everyone,

can someone recommend a motor solution to achieve 250RPM at 12Nm ? I'm looking for an off-the-shelf solution and the least amount of parts / devices involved. Torque requirement is momentary, I don't need 12Nm constant running torque, more like peak torque for 1000ms or so.

Regards,
Tom

 

[tjagiello]

Gents,

thank you for all the replies. I do agree that AC seems to make the most sense and the cheapest option here. With a DC servo the PSU needs to be rather huge, there's the driver and on top of it all the gearbox. Main issues with AC are size and noise. I might need to have a second look at the current design of the case to make everything fit.

Regards,
Tom

 

[waross]

Noise? Small AC motors are pretty quiet.

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[mikekilroy]

an ac motor on vfd running 250rpm can be so quiet you can't hear it turn in a quiet room assuming the vfd pwm freq is above your hearing.