ID this bench grinder

[kunkernator]

Well, i got this bad boy from work. They were throwing it out because it was unsafe (which it is). It does run, but has play in the shaft going end to end.

Anyway, it is about time for me to rebuild it, but i have no idea what it is.... There is no ID tag on it.

So, i need a couple things, wtf is it? And is there a take apart diagram somewhere? Also, where could I get a new tag?

Thanks guys!









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[Davefr]

That's a Baldor and you get a you ****!!

I belive you can get all the parts from Baldor:
http://www.baldor.com/mvc/DownloadCenter/Files/11G

 

[drivesitfar]

Kunk: nice save. i agree with Dave that it's most likely a Baldor. it's missing a few things, but sounds like you have some skills to put it right. here's a link to a thread where a member took a Baldor similar to yours and made it like new that might help you. there are also other baldor restoration threads and if you have any questions just ask here or on the vintage grinder thread and we'll try to help if we can.

http://www.garagejournal.com/forum/showthread.php?t=237971

good luck

 

[zkling]

I'd pull the ends bells before spending any money on parts. If it just has axial play then it is most likely fixable, at best just a loose bearing cap. Radial play is going to be worrisome as something is definitely worn at that point.

 

[larryq]

Definitely a Baldor. I lucked out and got one in red, same model as yours, for $45, and considered myself a lucky lad. You're doing even better!

 

[drivesitfar]

Kunk: one other possible issue might be a bent arbor that could have happened in a fall. not a cheap or easy fix so hope it just needs bearings.

good luck

 

[kunkernator]

Well, glad it is something nice. It appears to only have axial play, as it spins fine, just moves side to side.

Does anyone know how to identify what size motor it is? Or what model? Any secret area this info may be stamped? Or based off of dimensions?


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[G_P]

Looks pretty similar to a Stanley I have. They are pretty easy to dismantle. Remove the wheels and the wheel guards, and then you just have an electric motor with long shafts. Remove the 4 long bolts holding the motor together and both end bells will come off and you can then check the bearings.
Being a Baldor and an older one at that, it should use standard bearings that will be easy to find.

Shields are a must but you can retrofit some generic ones on there if the originals are no longer available. Finding another rest will probably be the hardest. Hopefully someone here has one or is parting out a burned out grinder.

 

[drivesitfar]

Kunk: measuring the inside of guard might help since the wheels are pretty well worn. or can you read the size of the wheels on the label?

also if you have some time check out the vintage grinder thread and you might see some other grinders restored like yours. Stanley might be another possibility, but i think Baldor used that on off switch.

 

[kunkernator]

Kunk: measuring the inside of guard might help since the wheels are pretty well worn. or can you read the size of the wheels on the label?



also if you have some time check out the vintage grinder thread and you might see some other grinders restored like yours. Stanley might be another possibility, but i think Baldor used that on off switch.

I read thru that 7" restore thread that you linked. I will tear it apart this evening, gotta finish doing the brakes on my car.

So if it is 8" (plus a little), then i have an 8 in grinder.

It will definitely need a new switch, while this switch does work, it kinda spins around in circles, doesnt just click each direction.

I started it up again, and it runs super smooth, no vibration.

As for the tool rests, i am going to use the current intact one for a grinding wheel and not use one for the wire wheel. The guards however, are not my primary concern. I will look into getting generic ones, but i wear a full face shield anytime i start a grinder up.

The badge will probably be the hardest. I will contact Balador.

On a side note, what is a good brand of wire wheels and grinding stones to purchase?


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[CNGsaves]

Absolutely you SCORED a Baldor !!! . . . . you deserve YOU **** !!

Good luck with restoration. You'll have lifetime tool when you're done.

 

[drivesitfar]

Kunk: this Craftsman block grinder thread has ton of information about wheels and almost anything you can think of about bench grinders. if you don't find an answer with a little reading and searching then come back and ask again. http://www.garagejournal.com/forum/showthread.php?t=157794

since you won't have much into your grinder might i suggest buying some Baldor lighted shields. they are not cheap but a nice addition to a quality grinder non the less.

i'm not sure about the size of the guard vs. the wheels that come with them, but if you have an 7 inch guard you can definitely know you don't have a 8 inch pr bigger grinder.

 

[kunkernator]

Tore this bad boy down this evening, got tons of info and pictures of course!





It appears the cause of the side play on it was due to missing this felt washer. Each side had steel shims between the bearing and guard, but only one side had a felt washer.







The windings on the motor appear to be in excellent condition, the coating still a nice red color.



Also it appears to have been a two speed grinder. I noticed the switch was obviously replaced, but the guard has "slow and fast" stamped on it.



Two wires coming out of the motor windings were wire-nutted together. Possibly to bypass the dual speed? As the switch that was installed is a single throw.

I made a crude wiring diagram. Any insight on if this is truly a 2 speed grinder? And how to rewire it to be such?



Does Baldor even make 2 speed grinders? I am going to poke thru the catalog right now.


I cant seem to find a 2 speed 8 inch grinder. Maybe the extra wires are to wire it for 240v, as opposed to 115v? The switch guard may very well not be original.

From what I gather, it is either an 8100W or 8107W model, depending if it runs at 1800 or 3600 RPM.

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