My bearings are fine but my new belt sounds like a supercharger. Check the pulleys and bearings and if they are fine it's probably the belt. Put the old one back and try it! I did.

Jim

"Every normal man must be tempted at times to spit upon his hands, hoist the black flag, and begin slitting throats".--H.L. Mencken Bumper sticker, OXYMORON #65 - Liberal Thinker