Motor replacement with a higher HP motor

Can you replace a 3 hp motor with a 7 hp?

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Bill says...

Sure you can, as long as the shaft interconnects and mounts work properly.

I think what you are saying is can your air compressor handle a 7 HP motor if it is built to handle a 3 HP motor, though.

I am not your compressor design engineer. However, if it were me, and I knew that the RPM of the motor shaft was the same for both motors, your air compressor shouldn't care whether it's a 3HP or 7HP motor.

The issue that would concern me is if I had a mechanical failure in the pump that added load to the motor, the larger motor may not "notice" that, and continue running which might be catastrophic for the pump.

If I only had a 7HP motor replacement, and it was my compressor, and the motor RPM's were the same, I wouldn't hesitate.

Cheers and good luck.

Bill