[TowerTalk] Battle of the bearings

[john at kk9a.com]

The rotator has a bearing which should suffice in most installations and 
there are no one bearing fulcrum installations unless the rotator is mounted 
above the tower.  If the rotator bearing is inadequate, perhaps one should 
invest in a larger rotator.  I would be more concerned about the upper 
bearing.  I tried using a Rohn TB-3 bearing once, the first one that I 
purchased did not  turn freely by hand and I returned it for replacement. 
The replacement got tight after several months in Aruba and I switched to 
another manufacture's bearing.

John KK9A


To: "Roger (K8RI)" <K8RI-on-TowerTalk at tm.net>
Subject: Re: [TowerTalk] Battle of the bearings
From: Mike <nf4l_NO_SPAM at nf4l.com>
Reply-to: nf4l at nf4l.com
Date: Sat, 15 Aug 2009 21:38:51 -0400
List-post: <towertalk at contesting.com">mailto:towertalk at contesting.com>


<snip>
TWO bearings would keep the side loads off the rotor (or a long sleeve,
or two short sleeves.). A single bearing is just gonna be a fulcrum.


73, Mike NF4L