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Re: [TowerTalk] Experience with K0XG guy ring bearings?

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Experience with K0XG guy ring bearings?
From: Charles Gallo <charlie@thegallos.com>
Date: Thu, 11 Aug 2022 06:53:05 -0400
List-post: <mailto:towertalk@contesting.com>
This is a common misconception!
One major issue in low speed, intermittent use bearings is that the grease gets 
moved out from under the balls (rollers if roller bearings), and 
shock/vibration starts to cause fretting issues.
I think it was in the 50s or 60s, where Ford Motors started having a major 
issue with front wheel bearings failing. The did some testing, and the found 
that the bearings took more wear and damage from this fretting in shipping by 
rail than they did in 100,000 miles of driving! (The answer was to block up the 
front suspension   to take the weight off the bearings)
Anyway, the moral is that low speed/intermittent use is a totally different 
load/wear system than a regularly rotating system, and turns out that things 
like sintered bronze, or these days, engineering plastics work better

--  
73 de KG2V
Charlie

> On Aug 11, 2022, at 5:03 AM, Stan Stockton <wa5rtg@gmail.com> wrote:
> 
> 
> Jim,
> 
> They are sealed and assume made to last for a long time running at high speed 
> in other applications.  I don’t know but would assume in this light duty 
> application they would last a lifetime.  You can’t tell the performance is 
> not like new from your spin test.  
> 

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