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.

[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.

[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.

[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.

[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:

[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.

[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!

[Richyvrlimited]

phillpot said:

Glad you're sorted, but can't see why the Rawlbolt wouldn't have gripped on that flange

Well the proper tool for the job didn't and it works the same way a rawlbolt does, so I don't see why it would!