More VFD Headaches
February 4th, 2009Make it Stop
Okay, another VFD question.
I want to be able to run my belt grinder at 5000 fpm. I have two choices. I can get a 3450 RPM motor and a 6″ drive wheel and get roughly 5000 at 60 Hz, and I can slow it down for low speeds. OR I can get a 1725 RPM motor and speed it way up to get nearly 5000, and I can run it at lower speeds for normal use.
It looks like the KMG people use 1725 RPM motors, and they remove stock in a hurry. But they use pulleys that double the speed at the drive wheel. So I guess 3450 is the way to go.
February 5th, 2009 at 11:43 AM
I was perfectly happy with my grinder. Now, it’s like a rattlesnake in the corner.
Then last night, while I was picking up some PVC, I saw a belt grinder that seemed to be calling me to take it home.
Is there some way that I could find you liable for some of the cost?
You’re at least responsible for the “need.”