Re: Warm left/rear bearing


Oh, and for Steve: 

Serial number: 7103RKL 13

On Feb 13, 2021, at 11:19 AM, motopreserveshop via <nortstudio@...> wrote:

Ok. She’s button back up and I’m not exactly sure what to think. I will say it runs quieter. And clearly I needed to address the spindle bearing play.

GOOD:  She’s now within spec (best I could get for a .0005 indicator). I’ll check again tomorrow - a tenth indicator arrives later tonight. 

BAD (?) The small bearing is still running warmer than the large (front). I ran it for about 30 minutes on the fastest speed using the large step pulley (3rd fastest speed of 6). It measured at a peak of 118f. And then actually leveled and dipped down to 113f. The entire time the large (front) bearing ran at around 84f. 

Not really sure where this leaves me. I’m certainly glad I got the spindles in spec. And I’m still below the 140f zone that was mentioned earlier in the thread. 

Am I way off here, or is she running as she should?

Thanks for helping me get this far!


On Feb 12, 2021, at 3:15 PM, Steve Wells <wswells@...> wrote:


Here is a new set of felt oilers standing in the wells.

And another with the wires in, ready for the spindle.

What is the serial number of you lathe, I think the “black Plastic”

Comment was my old age…lol that would have to be the fiber washer.

My 10L is a 1968 Tool room and has the fiber washer.






From: <> On Behalf Of motopreserveshop
Sent: Friday, February 12, 2021 9:55 AM
Subject: Re: [SouthBendLathe] Warm left/rear bearing


Once again, really appreciate all the help. I think I’m on the final leg of my adventure (for now!). Few final questions...

1. The brass capillary tubes are almost spot on .1 proud of the surface, so those look great. 

2. When I removed the spindle the capillary wicks were below the surface by aprox 1/4”. In fact, the top of the wick was almost exactly in line with the hole used to insert the wire for holding. Almost as if the wire was removed and they never popped up after installing the spindle and pulling the wire. This seems bad - and would leave the spindle without direct wick contact. Hoping this may have been part of the binding issue. 

3. All oil passages now seem to be clear. I hadn’t noticed the breather also intersected the lower passage. Thanks for pointing that out. 

4. The washer that has always been installed on the take-up collar/split nut is not a pinned “fiber washer,” as I always see referenced. It is merely a very thin shim-style steel washer.  I measure it at .0085. Also, my take up nut doesn’t not have a recess for a pin - maybe this spindle is a different vintage than I normally see referenced?  Is this thin washer a problem?

5. I read an old 10L rebuild thread by Steve that mentions a “black plastic flat washer” in the section about adding super lube to the pulley. I couldn’t see one in the thread photos - and I can’t find one anywhere on my headstock/spindle. Can someone tell me where to look, or whether this is another variation for my era lathe (mid-50’s)?

thanks again!


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