Rear bearing carrier clearances

Elan Discussions
1

I have a bearing carrier whose bearings simply drop in their respective ‘holes’
with an additional .001" or so clearance between the bearing and alloy. Would the fixes be:

  1. loctite the bearings?
  2. ‘close up’ the hole and re-machine?
  3. Scrap, because the price of re-machining exceeds the price of a new one?
2

I was able to use option 1 - The work was done for me so I don’t know the details but you need to use the right type of Locktite - I guess others will be along to tell you what that is.
Cheers
Baggy

3

Thanks. I just did a measurement of the clearance and it’s more like
.006

4

.006 is too much for Loctite in a highly loaded location.

While it’s not hard to weld up the bores, getting them heat treated and re-bored to original dimensions and having the inner and outer bores in perfect alignment with properly located snap ring grooves takes a real pro and will cost quite a bit. I would go with new.

1 Like
5

What is the other bearing bore like in comparison? I’ve seen them worn but that seems extreme. What have you used to measure the bore? I use a bore gauge when checking these.

6

Can one get the next size up, in bearings (outside) and machine it down?

Eutectic metal spray?

https://www.google.com/search?q=eutectic+spray+welding+kit&client=safari&sca_esv=cad4d383f6dfd877&hl=en-ca&ei=VFLJZ-kKk-HQ8Q-9gejYDA&oq=eutectic+spray&gs_lp=Egxnd3Mtd2l6LXNlcnAaAhgCIg5ldXRlY3RpYyBzcHJheSoCCAAyCxAAGIAEGJECGIoFMgUQABiABDIFEAAYgAQyBhAAGBYYHjIGEAAYFhgeMgYQABgWGB4yBhAAGBYYHjIGEAAYFhgeMgYQABgWGB4yBhAAGBYYHkitRVCdDFiOK3ABeAGQAQCYAW-gAakGqgEDNS40uAEByAEA-AEBmAIKoAKKB8ICChAAGLADGNYEGEfCAg0QABiABBiwAxhDGIoFwgIKEAAYgAQYQxiKBcICCBAAGIAEGIsDmAMAiAYBkAYKkgcDNi40oAfkNA&sclient=gws-wiz-serp

I used this on large gears years ago, it held up. But, maybe not for this?

7

Would a Speedi Sleeve work in this situation? I know they’re intended for shaft repairs to give a new seal surface, but it might be an option.

Mike

8

H20’s suggestion is a good one, re is there a slightly larger bearing. However i think it highly unlikely. Speak to a good bearing supplier. You could never machine a bearing down, but you could machine the housing down.

As I understand it, there are at least 2 types of Locktite bearing glue. I would speak to Locktite and ask them if any of their products will accomodate the gap you have. I believe there is. Make sure that the carrier is nice and clean, with no rust left from the old bearing.

If there is no product suitable, I would visit a good machine shop with the carrier, and ask them for their advice on possible remedies. Maybe adding some ali weld and then boring again, or making up a sleeve.

If a sleeve is what they suggest, but the groove for the circlip was a problem, I would not worry about that. The circilp will never come into play, so long as the correct interference fit for the bearing in obtained.

Leslie

9

Have a look at Loctite Quickmetal. I have succesfully used it in simlar circumstances

cheers
Rohan

10

From the speedi-sleeve website:

Note: Speedi sleeves are only suitable for repairs where an oil seals needs to run, they cannot be used to repair damage where a bearing fits onto a shaft.

Not sure why this is the case, but that’s what they say.

11

Thanks guys. With a caliper and bore gauge, the bore measures out to be
.002 greater than the bearing, although, in places, I can fit a .006 feeler gauge. I’ll investigate Locktite Quickmetal. It’s too
bad about speedi-sleeve, it certain sounded promising.
These are issue 18 carriers so worth saving.