ball bearings spec table

This is not for me, it is for my friend, who does not use usenet. He needs some bearings and he wants to find standard industry designations (like 6011, etc). I checked machinery handbook and did not find that sort of table, even though it talks at length about bearings.

He needs some 1" ID by 2" OD bearings. I know that McMaster has them, but he (and I) is not sure whether there are different specs. And he is hoping he can find a better deal on ebay if he knows what codes to look for. He wants to basically make a wood shaper that would spin at

23,000 RPM. (!). i
Reply to
Ignoramus9035
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Well you better get him to think expensive or smaller, as standard

1" bore ball bearings are limited to 12,000 rpm when grease lubed, 15,000 when oil lubed. If you decrease the OD, 18,000 is attainable if oiled. From the SKF manual.

Tom

Reply to
Tom

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have too use precision bearings here at at least $100 a pop. But in reality, you don't want 23krpm here. Either get a video camera or a Powermatic commercial shaper 'cuz this is a disaster in the making. I've shop built a number of big-ass shapers, up to 20hp, and you are headed down the WAY-wrong path. What do you want to shape?

Reply to
Tom Gardner

It is not for me, it is for my friend. For the record, I also thought that 1" shaft at 23k RPM is scary. He wants to shape wood for certain musical instruments (he makes them for a living).

i

Reply to
Ignoramus9035

will do.

i

Reply to
Ignoramus9035

Why not go to the local auto supply. They have bearings and can order anything. We used to buy our disk drive bearings and got the correct spec - they had the books.

Martin Martin Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net NRA LOH & Endowment Member NRA Second Amendment Task Force Charter Founder

Ignoramus9035 wrote:

Reply to
Martin H. Eastburn

YES!

Tom is absolutely correct.

Btw..there are usually high speed spindles for just this purpose on Ebay with some regularity.

Gunner

"A prudent man foresees the difficulties ahead and prepares for them; the simpleton goes blindly on and suffers the consequences."

- Proverbs 22:3

Reply to
Gunner

Yabbut, he wants to spin a 1" shaft of indeterminate length between centers at 23K RPM, and he'll probably want to hang some sort of a planer head and replaceable knife-sets off that shaft - and that's a LOT of centrifugal force to be experimenting with. The ball bearings are the least of his problems...

If he gets his math wrong on the forces involved, or the shaft straightness and balance isn't perfect, the whole thing can grenade in the operator's face. And if you haven't guessed, that is bad. ;-)

I'd go buy a planer that's the right size for the job as the basis for the 'custom machine', even if he has to make modifications to the infeed and outfeed or build a buck to hold the blanks of whatever he plans to run through it. Costs a bit more, but it'll be a turnkey, factory balanced, and therefore reasonably safe (*) machine. And you can buy replacement parts and knife sets off the shelf.

(* Stuff Happens, but the odds are a lot better.)

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Reply to
Bruce L. Bergman

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