Author Topic: The fit of a bearing in my hub:not tight enough IMO.  (Read 743 times)

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Online grcamna2

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The fit of a bearing in my hub:not tight enough IMO.
« on: October 22, 2023, 08:08:40 PM »
I have a Honda XL trail/enduro bike which I run mostly on the street;it runs good so I run around at 65+ mph on the street on long rides,at times.
 I just replaced both rear wheel bearings and notice the non-drive side(drum brake side)bearing O.D. 'interference-fit' between the hub and the bearing is not as tight as I like;not loose enough to fall out,but not as tight as it should be when new. The more it spins,the more it wears and that's what I want to fix.
I'm considering putting a certain product between the hub and the O.D. of the bearing like Loctite red? to achieve a tight fit but hesitate doing that because I would rather not use a torch to remove the bearing when I need to replace it next time;maybe Loctite blue medium strength ??
I'm asking for advice on what you have used in the past to tighten-up the fit/O.D. of a motorcycle cartridge bearing fit in an aluminum wheel hub,plus I don't want to permanently glue it in there with Loctite green/'bearing mount'.. as that stuff certainly needs heat/a torch to remove.
« Last Edit: October 22, 2023, 08:57:12 PM by grcamna2 »
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Offline Gurp

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Re: The fit of a bearing in my hub:not tight enough IMO.
« Reply #1 on: October 22, 2023, 08:37:44 PM »
Only thing I could think of would be something like a anti seize compound or a chopper head gasket seal. Something that's not a permanent seal but has some grit to it.

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Offline calj737

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Re: The fit of a bearing in my hub:not tight enough IMO.
« Reply #2 on: October 22, 2023, 09:41:49 PM »
LocTite Red and Blue won’t grab on an interference fit. They make Green (620) for seals and bearings, but you’ll probably need some muscle to remove it later. They also make a Green for “gaps” that will work (IIRC 613).

It sounds like either your bearing is the wrong size or the hub has actual wear in it. If the latter, then use the gap filling compound or try the 620 first.
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Offline Gurp

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Re: The fit of a bearing in my hub:not tight enough IMO.
« Reply #3 on: October 22, 2023, 09:57:40 PM »
Where I work we use that green loctite. Some muscle can be quite the understatement on what it takes to get that stuff out. We use it when a punch breaks a die and gets jammed together. We insert a cable into a vent hole in the punch with that green loctite let it harden and use a 5-ton port of power to remove them. The loctite usually doesn't fail.

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Online grcamna2

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Re: The fit of a bearing in my hub:not tight enough IMO.
« Reply #4 on: October 22, 2023, 10:52:17 PM »
LocTite Red and Blue won’t grab on an interference fit. They make Green (620) for seals and bearings, but you’ll probably need some muscle to remove it later. They also make a Green for “gaps” that will work (IIRC 613).

It sounds like either your bearing is the wrong size or the hub has actual wear in it. If the latter, then use the gap filling compound or try the 620 first.

There is wear in the hub on one side. The Nachi bearings had been in there since 2016' and were still good,but I needed to break it down for something else and went with fresh NTN's.
The bearing isn't loose enough to fall out,but the interference fit has been decreased by about 50%.
Cal,considering what you said here,it seems the Loctite 620 green 'bearing mount' (or equivalent) can help;I imagine I won't need to use too much of it..
 I think I'll have to apply a torch to it when this new fully sealed bearing finally wears-out.
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Offline scunny

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Re: The fit of a bearing in my hub:not tight enough IMO.
« Reply #5 on: October 22, 2023, 10:54:44 PM »
I've used Loctite 641 for bearing retaining with good results.
past-cb100,ts250,cb500,cb500,gs1000,gs650g.phillips traveller
present-CB 650 retro
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           TS250[sold]
           TS185[sold]
           XL125S[sold]
           MT50 (white)
           MT50 (red)[sold]
           KN250/XS400 project
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Online grcamna2

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Re: The fit of a bearing in my hub:not tight enough IMO.
« Reply #6 on: October 22, 2023, 10:59:40 PM »
I've used Loctite 641 for bearing retaining with good results.

I looked it up and it's equivalent to Medium strength thread lock..  thanks for this info scunny.
The bearings you used it on:were they still holding a little inside the hub before using it ?   Mine does,but not enough..
« Last Edit: October 23, 2023, 06:42:28 AM by grcamna2 »
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline scunny

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Re: The fit of a bearing in my hub:not tight enough IMO.
« Reply #7 on: October 23, 2023, 12:00:22 AM »
They gave no confidence in the fit. Possibly due to a bearing siezing.
past-cb100,ts250,cb500,cb500,gs1000,gs650g.phillips traveller
present-CB 650 retro
            VTR1000F3
           XL250S riverbed rocket
           TS250[sold]
           TS185[sold]
           XL125S[sold]
           MT50 (white)
           MT50 (red)[sold]
           KN250/XS400 project
           XR/XL250 bitsa under construction
           SL100[sold]
           XL250R
           pedal(pub bike) leaks oil
my gallery http://gallery.sohc4.net/members/personal/scunny

Offline BenelliSEI

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Re: The fit of a bearing in my hub:not tight enough IMO.
« Reply #8 on: October 23, 2023, 06:39:13 AM »
I’m a total Loctite Fan. But, for this precise purpose I prefer a FELPRO product called “TIGHT”. It squeezes out of a tube a bit like tooth past and really fills some significant gaps. Everything must be spotless first.

The other option is to knurl the bearing carrier.
« Last Edit: October 23, 2023, 06:41:14 AM by BenelliSEI »

Online grcamna2

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Re: The fit of a bearing in my hub:not tight enough IMO.
« Reply #9 on: October 23, 2023, 06:39:40 AM »
They gave no confidence in the fit. Possibly due to a bearing siezing.

Blue  :).
How did you prep the area scunny ?
« Last Edit: October 23, 2023, 06:48:18 AM by grcamna2 »
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline Kelly E

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Re: The fit of a bearing in my hub:not tight enough IMO.
« Reply #10 on: October 23, 2023, 08:23:47 AM »
Do they have you working in the living room now?
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Online grcamna2

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Re: The fit of a bearing in my hub:not tight enough IMO.
« Reply #11 on: October 23, 2023, 09:20:15 AM »
Do they have you working in the living room now?

I'd need to haul bikes upstairs to do that..  :D  I'm about ready for that.
I lived in a place in Toccoa,Ga. in 2011' for about 8 months;no furniture(ground level)at the time and it made a nice 'shop'.  :)

I just go outside and do one task at a time now Kelly;I've decided I don't want to argue with a 'karen'.
Ah.. this place; I want to find the best situation/another place to live. I need my own turf;w/o nosey people,you know?
Some neighbors...  >:(
« Last Edit: October 23, 2023, 09:22:49 AM by grcamna2 »
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline Tim2005

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Re: The fit of a bearing in my hub:not tight enough IMO.
« Reply #12 on: October 23, 2023, 12:19:27 PM »
Loctite 648 is perfect for that job. Check out the details here (also check the datasheets, note the curing time is dependant on the size of the gap, if in doubt leave it a whole week).  https://www.henkel-adhesives.com/us/en/product/retaining-compounds/loctite_6480.html