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From: Richard Smith <null@void.com>
Newsgroups: rec.crafts.metalworking
Subject: Re: Outdoor Welding
Date: Wed, 09 Jul 2025 08:17:33 +0100
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"Jim Wilkins" <muratlanne@gmail.com> writes:

> "Jim Wilkins"  wrote in message news:1043b3k$3hded$1@dont-email.me...
>
> I'm having trouble analyzing to learn from this. What is the load direction
> on the inner ring that your weld must resist?
> ---------------------------------
>
> More specifically I assume that if the inner ring bears weight the
> upper weld could fail in tension (+shear?) across its throat area. The
> lower weld might shear along the column so punch press math could
> apply, or to the extent the fit is loose or the column can expand and
> the ring shrink the shear could be along a shorter line angled toward
> the weld throat. Does that make sense?
>
> If the load is a mooring line I'd have to know how it's attached.
>
> I have similar geometry in two recent projects, one a shop-made
> stainless solar array thrust bearing with the ring retained in the
> tube by a circle of screws, their inner ends turned smooth and loosely
> fitting in a groove in the ring. The load on the cap passes through
> the races and balls to the ring below, so the outer tube is only
> shielding.
>
> The other is a thick sleeve with an integral ring inside threaded
> internally. It adapts this to a non-HF floor jack.
> https://www.harborfreight.com/steel-floor-jack-cross-beam-64051.html

Per previous - leave-alone this line of thought.  It will be designed
for "special" load-conditions.