Towertalk
[Top] [All Lists]

Re: [TowerTalk] Which Thrust Bearing to Use

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Which Thrust Bearing to Use
From: jimlux <jimlux@earthlink.net>
Date: Fri, 9 Dec 2016 08:11:30 -0800
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 12/9/16 8:06 AM, charlie@thegallos.com wrote:
 >I would expect either
tapered roller bearings, or today, do what most of industry does, and use
an engineering plastic bearing.


I mean nylatron is practically begging for that use.  No elevated temps
(folks reading - elevated temps here means greater than 50C on a
continuous basis aka 20 hours at a time - and even then, if we go
reinforces with either glass or Molly, you can go 75c - just in case you
want to paint your bearing black and put in in the sun in the Mideast),
"moderate" loads per square inch, low rotational speeds, no seriously
significant shock loads.  Never have to worry about the balls indenting
the races like the Ham IV, never have to worry about rust etc.  MFJ could
get rid of the two steel races, the balls, the retaining rings etc, and
have a better product for probably less money

______

And in 2065, there will be people on eham, or the equivalent, complaining how their MFJ rotator has cheap plastic in the bearing instead of good old steel forged from ....

There's a lot of 50 year old ham gear out there

_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

<Prev in Thread] Current Thread [Next in Thread>