Blind/Internal bearing puller

[Richyvrlimited]

Can anyone recommend one?

I bought a kit from eBay and failed miserably in attempting to remove a bearing. Looking at the tool it seems to be a knuckle that expands rather than a claw that expands to grab the back of the bearing, (or the inside of the case after knocking the inner race out).

The ID of the bearing is 17mm and it's a closed ended needle bearing FWIW

Many thanks in advance.

[one eyed mick]

Just like a fly wheel spigot brg , solid bar tight fit to brg id fill brng with grease enter bar and whack with hammer should fetch it out done it many times with bushes too

[Richyvrlimited]

The bearing is closed ended and access is only available at the open end.

If I follow your directions corectly I don't think it'll work in this situation unfortunately.

[Boosted LS1]

Is the back of the bearing covered with a dirt shield? Is that what you're describing? If so punch that out to allow you to get a puller behind the bearing. It may be a case of initially using destructive power to get the thing out :-)

[Richyvrlimited]

It's a needle bearing, there's only 1 end thats open, additionally access from behind it is impossible without destructive drilling.



I've already mangled one side as you can see, which is making the job a smidge more difficult.

[Boosted LS1]

What is it installed into? Could you take it to an engineering firm for removal?

[Richyvrlimited]

It's the casing of a roots supercharger

I could take it to an engineering firm, but I'd quite like to get them out myself. Plus I don't know of any.

[Megaflow]

The well fitting bar trick should work with that.

Find a piece of ground bar that is a nice fit into the bearing, pack the inside of the bearing with grease, right up to the top of the hole, put the bar on top of the grease and whack it with a hammer.

The hydraulic force will force the bearing out of the hole.

ETA: Like this - https://www.youtube.com/watch?v=OScJ2QKpV_k

Edited by Megaflow on Friday 29th May 12:44

[Richyvrlimited]

Megaflow said:

The well fitting bar trick should work with that.

Find a piece of ground bar that is a nice fit into the bearing, pack the inside of the bearing with grease, right up to the top of the hole, put the bar on top of the grease and whack it with a hammer.

The hydraulic force will force the bearing out of the hole.

ETA: Like this - https://www.youtube.com/watch?v=OScJ2QKpV_k

Edited by Megaflow on Friday 29th May 12:44

no that won't work, as I said before it's a closed ended bearing, there won't be anywhere for the grease to go to then push the bearing out.

Like this:

[Megaflow]

Ah, I misunderstood what you meant by closed end, I thought you were referring to the casing, not the bearing.

Can you get a cold chisel in there to break the current bearing and take it out in bits?

[Boosted LS1]

If you can't remove it conventionally then drill the casing, remove the bearing and then fit a blanking plug into the casing, voila. Next time round the job will be easier.

[Ceejay73]

Do you have access to a MIG welder?
If so, remove the rollers and cage from the casing (shouldn't be too hard).
Run some nice big welds around the ID of the bearing case and allow to cool.
As it cools it will contract the bearing case easing removal.
May sound crackers but I have used the same method a number of times on much thicker bearing cases.

HTH
Carl.

[phillpot]

Forget the rest a "Rawlstud" is what you need!



This is a home made spigot bearing remover (bearing still attached)



Guaranteed to work

[Richyvrlimited]

phillpot said:

Forget the rest a "Rawlstud" is what you need!



This is a home made spigot bearing remover (bearing still attached)



Guaranteed to work

Won't work in this particular case.

The bearing puller I bought works exactly like the rawlstud in your first picture. The tighter you go the more the bearing casing is forced into the housing, The puller just slipped out eventually.

The second picture shoes the tool sticking out of the end of the bearing. As I said before, the bearing is closed ended, you can't get anything past it's closed end. Even if you destroyed the closed end, it's sat agains the housing so you've still no-where to go.

[Mr2Mike]

Use a Dremel, grind a hole in the closed end of the bearing and then use the grease and close fitting bar trick.

I agree that expanding extractors rarely work well on needle rollers as the outside race is just too thin.

[one eyed mick]

If drilling a holw just punch the bearing out with a punch simples innit?

[Mr2Mike]

one eyed mick said:

If drilling a holw just punch the bearing out with a punch simples innit?

Not sure what you mean. You'd have to drill a hole all the way through through the bearing housing to be able to punch it out. I meant grind a hole in the closed end of the bearing with a small dremel grinding bit, then then use the traditional grease+dowel method to remove it.

[paintman]

Is the bit with the stuck bearings portable?
If so might be an idea to try a local engineering works/engine rebuilders.

[227bhp]

Drop a close fitting nut in, weld around the top of the race so the nut is held in. You've then got something with an internal thread held in place which leaves you various options of how to get it out. I would weld it a small bit at a time, maybe with the case sat in water, it doesn't need to be a full weld.
You can guess the rest.......

Edit: Does what is left have a lip internally at the top? Your first pic is unclear, second one is a 'Library pic', but suggests it does. If it has then this opens up other options.

Edited by 227bhp on Monday 1st June 08:13

[Richyvrlimited]

Thanks for the help everyone!

You'll be please to know I've got a bearing out! The mangled on is still stuck in, but it's a start.

In the end I used a thick washer that was slightly smaller than the ID of the bearing with it's inner guts smashed out.

The washer had 2 flats filed off so it could be dropped inside. Before the washer was dropped in I placed a flanged nut inside.

Then I welded a bolt to the longnut for the slide hammer which came with the cheap blind bearing puller tool.

3/4 whacks and it came out!