Best (correct) way to install oilite flange sleeve bearings?

[MANUCHAO]

Ok, so Im thinking of installing a set of oilite sleeve bronze bearing on DOM tubing.
Do I need to ream (chucking reamer) the DOM tubing?
or
is heating up the DOM tubing and freezing the oilite bearings be enough for these to drop in or press with minimal force ?

The bearings
ID is 1.0008" with a tolerance of 0" to 0.0012" and the
OD is 1.252" with a tolerance of 0" to 0.001"

The DOM tubing OD is 1.75, ID is 1.25" and .25" thick.

The shaft OD is 1".

I searched on line and watched some YOUTUBE stuff, but thought I ask here as well.......

Thanks,

Frank

 

[PAToyota]

You say bearings ON tubing but then drop in or press in, so I'm assuming that you mean IN tubing?

If you were slipping it onto tubing, you'd use one of these: 3/8" to 5-3/4" Cone Style Bearing Heater

For inserting into tubing, I typically just press them into place.

 

[MANUCHAO]

@PAToyota thank you for the reply.

So, Yeah I meant pressing the sleeve bearing inside the DOM tubing...while the 1" OD shaft would ride inside that same bearing...
I feel that with those tolerances the pressing into the tubing might squeeze the bearing too much and the 1" OD shaft would not fit in....
pic for reference ......

 

[PAToyota]

You're talking a couple to few thousands difference. That is basically a press fit.

 

[firestopper]

You should be able to press that in without any drama. I'd use dry ice for the bearing or just leave it in the freezer for some time. I would not heat up the DOM as I think it would work against you in this case.
I have done some recent work/machining using Oilite. If you do find the need for turning or reaming, use sharp tooling to avoid smearing the
pours.

I prefer dry ice, it quick and easily found around here at grocery stores.

Having a lathe, I also make the correct size tooling for pressing. This will prevent any damage to the bearing.
This larger 4" olive bearing did not require freezing and was about .003" larger than the bore. The piece that rides inside the ID fit just fine. Assembly lube was the only thing used for this press (no freezing).

Machining them to tolerance requires very sharp tooling. This was a weird size bearing and very expensive, so I opted to buy a single larger piece and make the two required.

Your bearing ID of 1.0008" and your shaft OD of 1" might be tight after pressing. Just hard to know with 100% certainty.

If you wanted to be on the safer side, you could open up the receiving bearing bore for a interference fit of .0015" and use loc-tite.
For me I would leave it alone but I have the option to machine. A snug fit is beneficial as friction causes the Oilite to sweat the oil and absorbs it back in when cool. Thats the best answer I have bud.

 

[MANUCHAO]

If you do find the need for turning or reaming, use sharp tooling to avoid smearing the pours.Machining them to tolerance requires very sharp tooling.

Yeah and lathe work is $$$......

I'd use dry ice for the bearing or just leave it in the freezer for some time.

I think this the way Im planning on doing it....I have access to Dry Ice.
Any feed back as to why not heat the DOM tubing ? Just curious......

Your bearing ID of 1.0008" and your shaft OD of 1" might be tight after pressing. Thats the best answer I have bud.

With the oilite sleeve bearings not set... these slide nice and smooth on the 1" shaft...my fear....the 1" shaft being too tight, and, or not fitting at all once pressed in.....
Thank you @firestopper for your feed back....much much obliged

 

[firestopper]

Yeah and lathe work is $$$......

Understood, and my lathe cost $14K so my work isn't free but very affordable. Hopefully you won't need it turned/bored.


I think this the way Im planning on doing it....I have access to Dry Ice.
Any feed back as to why not heat the DOM tubing ? Just curious......

As far as chilling the bearing, it will shrink enough to allow pressing given your measurements. Heating the DOM will be counterproductive IMO.
Will you be using a "H" press or driving it in. The first option is always preferred.



With the oilite sleeve bearings not set... these slide nice and smooth on the 1" shaft...my fear....the 1" shaft being too tight, and, or not fitting at all once pressed in.....
Thank you @firestopper for your feed back....much much obliged

I understand your concern but without having it in my hands, I can't give you a 100% answer. My advise was on pressing and machining Oliite bushings/bearings. My hunch is it will be fine...that said, good luck.

 

[cruisermatt]

I’ve just hammered them in