[GreenKeys] Different bearing question

John, W9DDD w9ddd at tapr.org
Sun Aug 25 14:49:52 EDT 2019


Hi TT,

I'm finding what is called a bearing shim in the McMaster Carr catalog 
(web site actually)  They list them in metric dimensions, which I guess 
makes sense since bearing are listed that way.  A standard 28mm OD, 20mm 
ID and .8mm thickness sounds pretty close to the imperial dimensions you 
give.  I'm checking the local motor and bearing shops tomorrow since I 
really don't need 25 of them.

John, W9DDD
Ich habe dreimal abgeschnitten uns jetzt zu kurtz. (I cut it off 3 times 
and it's still too short.)

On 8/24/2019 4:24 PM, Thomas Tillson wrote:
> *1 3/32 OD X 3/4 ID X 1/32 thick.
> *
> 
> *It is Part number 122208*
> 
> *TT*
> 
> 
> In a message dated 8/24/2019 5:19:54 PM Eastern Standard Time, 
> w9ddd at tapr.org writes:
> 
> Got the fan off.  Found that the motor was missing the washer that's 
> supposed to be between spring and bearing.  This may explain why there 
> was so much end play compared to the 1/20 HP motor on Dan's RO and that 
> it didn't spin like normal when spun by hand.
> 
> I'm wondering how thick the washer should be,  I may be able to find 
> something close in my collections misc. screws, nuts and washers, will 
> it perform like it should if it's supposed to be relatively thick.
> 
> John, W9DDD
> 
> 
>  > On Aug 23, 2019, at 5:18 PM, E. <hanyou at xsmail.com 
> <mailto:hanyou at xsmail.com>> wrote:
>  >
>  >
>  > When I tried getting my motor fan off - the one time I thought the 
> bearings were going bad (but luckily weren’t), I couldn’t ;o … a scary 
> bridge indeed ><; ~
>  >
>  >
>  >> On Aug 23, 2019, at 5:00 pm, John, W9DDD <w9ddd at tapr.org 
> <mailto:w9ddd at tapr.org>> wrote:
>  >>
>  >> Actually this is more about getting to the bearings.
>  >>
>  >> I have 1/12 HP motor that is going to need bearings by the sound of 
> things.  The question is what about the fan.  I'm guessing it's press 
> fit and you have to pull it off with a bearing puller.
>  >>
>  >> I did see a screw, but even after I removed it, I still think it's 
> going to take a bearing puller.  If the fit is that tight, it's going to 
> be fun to put back on and have the screw hole line up with the one in 
> the shaft.
>  >>
>  >> Anyone crossed this bridge before?
>  >>
>  >> When I pull on the fan, the whole shaft pulls with it about an 1/8". 
> The other motor doesn't do that.  Doesn't sound good.
>  >>
>  >> --
>  >> John, W9DDD
>  >> Ich habe dreimal abgeschnitten uns jetzt zu kurtz. (I cut it off 3 
> times and it's still too short.)
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