On Sun, 18 Apr 2021 16:07:57 -0400, Joe Gwinn
wrote:

On Sun, 18 Apr 2021 00:14:48 -0400, Clare Snyder
wrote:

I am making a swing-away bike carrier to fit in trailer hitch
reciever. With everything shut down I need to use what I have on hand.
Can I use 6063 aluminm (rigid aluminum conduit) as a pivot bearing? I
plan on pressing it into a steel sleave. Loasding will be under 200
lbs at 30 inches - bearing length 1 1/4 inches - shaft 5/8 to 3/4
inch. The arms are made of 3/16" wall 1 1/4 inch square tube. and I
don't really want to just bear the load steel to steel on the 3/16
inch wall thickness or a steel tube on the pin. Not sure what my pin
material will be yet untill I get through my "ends" box on Monday
would be good if I could find some chrome shaft like a shock
absorber/strut shaft or hydraulic cyl rod

6061 makes for a terrible bearing.

Remember the speed is about 4 RPM and only 90 degrees of motion.

Use delrin or the like. One can also buy pre made delrin bearings for
small dollars from McMaster.

Joe Gwinn
I'm using brass. I found a couple brass fittings that will fit on a
15mm or 5/8" shaft whichever I can find. I'll see what our local
Metals Supermarket has available. We are under lockdown up here and
getting ANYTHING is a long drawn out affair. The Myford Super 7 can
help me make what I need out of what I have or can scrounge. I have
HMWPe that I could make the bushings out of too but I think it would
be more likely to deform under the load when opened.