Thread: Used large ball bearing/race anyone? I want one...

Hi Joe
If you cant find a suitable bearing maybe one of the old Repco wheel alignment pads might do what you want.

Roger

Hi Joe,

Sort of a lazy Susan on steriods.. lazy Bertha perhaps...

I've got a job next week at a place that might have that sort of bearing, they replace things every year as part of their routine maintenance regime, irrespective of how much wear...

I'll ask and see what they have..

Regards
Ray

When I get back to work next week ,I'll look around for a truck wheel bearing ,only thing is they are tapered roller brgs.
If one of those would suit let me know.
I have af ew of the outer races here at home ,but no roller cones .
I often use the outer races for packing on the mill.

Kev.

Hi Ray and Kev,
you assistance will be greatly appreciated!
A large taper roller bearing will work for me. I would simply add an extended "lazy Bertha" 'spindle' inside the base and add a smaller single row bearing out of my 'stock' on the end with a suitable reducer to maintain the alignment of the taper rollers. The weight of the table will keep the taper roller bearing loaded in any case.
The table bearing outer diameter is HUGE - 9" or 228mm ! (minus whatever is required as a spacer/bush for whatever bearing I end up with)
"Lazy Bertha" is a good name for it, Ray
It will obviously only ever be hand rotated - or electrically or mechanically rotated very slowly for welding around things (I'm thinking of something like a kick wheel or a foot swith operated very slow electric drive. I haven't designed anything concrete yet until I know how I support the table.
Ray, did you see the table at you last visit? I can't recall pointing it out - it was on the ground just outside me shed (and getting it off my trailer was what blew the seal in my crane cylinder).
Joe

Go to a place that reconditions industrial gearboxes or large electric motors. They usually have a scrap bin full of old bearings and probably would be happy to let you have one.

In Brisbane that might be (electrical) companies like ATMR, ABB or George Gilberts (or whatever they call themselves now) etc.

If you're struggling for a lead, try one of the bearing factors. Go in and ask them to suggest a company that reconditions the kinds of equipment that has these large bearings.

Ok Ill look for a bearing on Monday .

Kev.

Why not use a standard motor vehicle stub axle and hub.

It could be front or rear (rear would probably be easier to set up.

Two taper rooler bearings and avaialble for almost free from your local wrecker.

And if you wanted to get fancy you could have a brake on it to stop it turning when you wanted that.

I thought about it - but suspect it's nowhere near rigid enough. Maybe a truck front stub axle.... I know no sources for that either though.
Joe

I might be able to help, the group I work for manufacture crushing equipment for the mining industry, Im sure I have some used bearings at work from a rebuild (around 280mm-350mm OD).
The other problem is I cant help with the single row ball bearing we only use double row spherical bearings(SKF), it should still work in that arangment tho, when I get back from holidays I will have a look for you.
Regards
Brett

The best I can offer is a 6010 bearing which has a 50mm ID.

Brett, from memory double row spherical bearings are self aligning so using them for a turntable may not work unless there is a second smaller bearing there to stabilise the shaft.

There is a way around this issue without having to use large bearings - in fact for this application it may be preferable as sooner or later some stray current will probably travel through your bearing and ruin it, starting the search all over again...

Michael

Attachment 193600

Old slashers gearboxes have a large cone and cup setup.. You could use the shaft as well.. Tractor shops would have old ones lying around.. Especially now in mid summer..

Hi joe
Michaels idea works very well and if you don't have another piece of plate big enough for the guide rollers then pieces of flat welded into a 'Y' shape will give 3 point contact.

Phil

I love this forum! or rather the spirit of the members who make up this forum.

I had a phone call today from "John" who after introducing himself indicated that I don't know him from a bar of soap

He then said that his transport operation had a spare used bearing around 6" OD that might do what I was looking to do and that he had read this thread. So he had put it into the toolbox of one his drivers who was scheduled to leave the trailers of his double B parked near where I live. I should just go and get it.

On my way home from work, I went past there to see where these trailers would be parked - and there they were. A look in the toolbox as directed found this:


How's that for service? Bloody brilliant! Within 48 hrs...
Thank you very much John!

So before we get too far off track of what I actually have and want to do, here are a couple of pictures of what my "table" looks like and the stand legs I happen to have and might use and where this large bearing is proposed to go. The table is 18" square and 3" thick around the edge, the actual top approx 1-1/2" thick.









Now I will have to give this a bit more thought.....
Sketch coming when I got an inspiration

Cheers,
Joe

RayG: What's the crossfeed capacity of your new shaper? The top surface of this thing might give it a good "workout"?

Joe