Acoustic Guitar Construction

Hi Guys I have a question. I ordered a couple of sealed bearings to complete my homemade thickness sander. Now they did not specify a limit to the RPM's for the Bearings. My plans call for an RPM of about 3600 rpm. My motor is a 3/4 hp 3450 rpm. So I was looking to kick the speed up just a little. This I can do with the pulleys of course. Is there a limit I should stay under for the sake of the Bearings?

I have absolutely no idea, but I didn't want you to go without an answer, as if we were ignoring you. We are not. At least I'm not. Whatever LOL

Have you spoken with the bearing vendor about the bearings' tolerance for rpm?

Lonnie, Every quality bearing has a code on the side. This refers to an industrial standard that includes form, sizes, clearance and also max revs.

Probably yours can be found on the net.

You need to reduce the RPM not increase! Drum sanders normally run at about 1750 and the low power ones have at least 1.5 HP. I'd use a reducer pulley -- you'll get more torque and the motor won't stall as easily. Spinning the drum faster will only lead to more heat and clogging of the abrasive. With a really low power motor (3/4 HP) I am sure you need to feed the work "very, very slowly" and make very shallow passes ------ .$02

Thanks guys. Appreciate your answer Ken. I ordered it off Amazon. So there wasn't any of the info I asked for. So basically I need to reduce the speed by half ? That should be easily enough done. Thanks guys

Lonnie, this may be of help to you, very easy way to determine what to use where and what will "Fit"...I've used it a lot over the years.

Scroll down about half was there's a pulley and speed calculator.

http://www.culvermotor.com/Engineering- ... lator.html

Ray