Good point. A sleeve for side forces and a plate for vertical load. IOW
a "T" with a hole through the center.
There are taper bearings meant for slow rotation, but I think the
"plastic" (Filled Teflon or Delrin). Plain Teflon cold flows and is not
dimensionaly stable under pressure. I'd be suspicious of a metal
sleeve with expansion and contraction due to temperature swings
I have a lot of experience using both, but that was over 40? years ago.
73, Roger (K8RI)
On 7/15/2017 Saturday 12:57 PM, Charles Gallo wrote:
This whole thing brings me back to one of my hobby horses.
Why are we using ball/roller/taper bearings for this use?
A nice hat section (inverted) plastic bearing (cheap if molded, more expensive
if machined due to waste) made of say nylon 66, or even Teflon (particularly if
filled) would be way better. They won't fret from vibration, never need lube,
designed right won't see sunlight, never corrode , and would probably be less
expensive in production quantities (see molded). I could build something that
doesn't use solids, but multiple pieces of rod ends that would have more labor,
but less material cost
Ball/roller bearings are great, but are really the wrong thing for an
intermittent duty, low speed, weather exposed, hard to maintain environment,
with vibration and shock when stopped
--
73 de KG2V
Charlie
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73
Roger (K8RI)
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