grinding wheel Identifcation?

[sasquatch]

Back a bit ago i bought a bunch of stuff out of a deceased friends shop.

I have a new unopened case of 6 of these grinding wheels marked :

Norton -G103

Then-39c601-K8VK 6in x 3in x 32mm

Anyone know what these are for? Surface grinder???

Tried searching Norton couldn't find that # Thanks.

[PixMan]

Those would more likely be for a small centerless or cylindrical grinder.

The G103 doesn't seem to mean anything of importance, probably just a production code of sorts. Norton made and continues to make a LOT of non-stocked standard wheels for all sorts of special applications.

In the "39C601-K8VK" the "39C" suggests it the 39C Crystalon, a silicon carbide abrasive good for carbide, tunsten and other dense materials. Is it a dark gray or green wheel?

The "601" part confuses me because that's usually a two-digit number or a zero in the third position if a 3-digit extra fine grit. It's grit size, and either it's a 60 grit or a super-fine 600. I tend to think it's a variation of 60 grit.

The "K "means it's a fairly hard bond, on the upper part of that scale for vitrified wheels.

The "8" means it's a free-cutting, relatively open wheel. More air spaces between the abrasive grains and bond gets an 8 to 12 (higher is more open), less air space and higher density gets a lower number.

The size is unusual. Being 6" in diameter but 3" wide is what has me thinking small centerless grinder. The 32mm bore lends me to think it's for a European made machine. You may not ever find the application, so just take some good photos and put them out there on eBay.

[sasquatch]

Thanks for that info, and yes the wheels are grey, somewhat coarse, i rechecked the number and yes it is 601.
Trying to decide what application i could use these wheels for, but the 3in width is puzzling.
I also got another box full of smaller wheels, all around 2-3in dia., some cup style with different bore sizes, all new also, in white, grey and pink.

This guy was a real packrat, have no idea why he had all these wheels, heck there were wheels there up to 20 in. in dia x 2 in. wide.

[PixMan]

(12-20-2012, 08:27 AM)sasquatch Wrote: This guy was a real packrat, have no idea why he had all these wheels, heck there were wheels there up to 20 in. in dia x 2 in. wide.

Chances are he worked for either a grinding wheel maker or a reseller. Probably the latter, though the outside chance that a distributor just gifted him a lot of old stock.

The 20" wheels are cylindrical grinder wheels. There is a bigger market for those.

[stevec]

Could the 20" x 2" wheels be for crankshaft grinding?