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 Post subject: Thingamabob
PostPosted: Nov Sat 14, 2020 3:52 pm 
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Joined: Jul Sat 11, 2020 8:40 am
Posts: 44
Location: Baltimore, Maryland
On the front panel of my radio, there is a hex bushing thing that supports a tuning shaft where it goes through the front panel to attach the knob. I would like to find another one, but I am not sure what it is called. Does anyone know? Thanks!

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 Post subject: Re: Thingamabob
PostPosted: Nov Sat 14, 2020 4:09 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 15335
Location: S. Dartmouth MA 02748-1225 USA
Umm :roll: ..................... wait for it............................................Panel bushing?

In a pinch one can be saved from most volume controls or rotary switches... chas

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 Post subject: Re: Thingamabob
PostPosted: Nov Sat 14, 2020 4:27 pm 
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Joined: Nov Sun 15, 2015 8:32 pm
Posts: 220
Location: Poteau, OK
The part shown in your picture is referred to as a "Panel Mount 1/4" Shaft Bushing".

You can find them here:

https://www.surplussales.com/ShaftHardw ... ftH-9.html

Remove the one shown in the picture and measure the inside diameter of the opening. The bushings
sold by Surplussales.com in the above link requires a 3/8" opening. The bushing in the above link
accepts a shaft diameter of 1/4".

I typically apply a small amount of grease to a cotton swab and insert the swab into the bushing.
I rotate the cotton swab to coat the inner bushing race with lubricant. The shaft is inserted and
any excessive lubricant around the bushing and shaft is removed with a clean cloth. This simple
application of lubricant keeps the wear between the bushing race and shaft to a bare minimum
and provides a smooth rotation of the shaft in the bushing.

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Mike W5RKL
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 Post subject: Re: Thingamabob
PostPosted: Nov Sat 14, 2020 8:38 pm 
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Joined: Jul Sat 11, 2020 8:40 am
Posts: 44
Location: Baltimore, Maryland
Thanks guys! Knew it had to have a simple description!


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 Post subject: Re: Thingamabob
PostPosted: Nov Tue 17, 2020 5:48 pm 
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Joined: May Tue 30, 2006 4:46 pm
Posts: 10388
Location: Santa Rosa, CA
It is called a "panel bushing" or "panel bearing." I saved at least one from homebrew chassis that I bought at fleamarkets. In a pinch, you can bust up an old potentiometer and rescue the bushing. Old panel mount variable caps usually have good panel hardware that can be harvested.

Rich

https://www.surplussales.com/ShaftHardw ... ftH-9.html


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