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