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jcc3inc
12-11-2005, 09:03 AM
Hello all,

I'd like your ideas to balance my craftsman bench grinder. The bearings are good, it always stops with the wheel heavy side down. How do you guys balance something like this??

Thanks in advance,
Jack C.

winchman
12-11-2005, 10:06 AM
Check the bushings between the shaft and the wheel. There should be almost no play there.

Is the wheel running true? If not, use a dressing tool to true it up.

If the wheel is still out of balance, I'd toss it.

Grinding wheels should be of consistent density throughout. If it's centered on the shaft, running true, and still out of balance, there may be some sort of internal flaw that could lead to a failure.

Roger

[This message has been edited by winchman (edited 12-11-2005).]

Mcgyver
12-11-2005, 10:34 AM
A bench grinder is a lot more forgiving than a surface or T&C grinder, in other words if its slightly out but dressed properly you might not notice it. If its out so much its a problem, after dressing, I think Roger's advice is good.

If you are curious on how to balance, the link below gives some detail on how I did it, a quick and dirty method is to abrade away some of the heavy site with a carborundum stick

http://bbs.homeshopmachinist.net//Forum1/HTML/013060.html


[This message has been edited by Mcgyver (edited 12-11-2005).]

Gerryrig
12-12-2005, 12:00 AM
On the smaller grinders, I replace the outside spindle washer, that holds the wheel, with another heavy washer that I have slotted the hole so it can be moved to balance the wheel. This is done after the wheel has been trued. I place the wheel on a round shaft between to straight edges and move the slotted washer until it is balanced. Mark washer position and reassemble.
Gerry

jlach
12-12-2005, 08:13 PM
This link will take you to a bench grinder balancer http://www.leevalley.com/wood/page.aspx?c=1&p=49226&cat=1,43072

Your Old Dog
12-13-2005, 06:03 AM
you likely know this but make sure when you dress your wheel that the last few efforts are with a very light feel so it can remove the high spots. My neighbor used to just bear down on the dressor so if he was cleaning up an egg it would still look like an egg when he was finished http://bbs.homeshopmachinist.net//biggrin.gif

Mcgyver, thanks for re-posting. I hadn't seen your setup. Very nice workmanship and great job with the digi.


[This message has been edited by Your Old Dog (edited 12-13-2005).]