[TowerTalk] US Tower bearings

[Dan Hearn]

Mac, I faced the same problem several years ago. The bearings were no longer
available at the manufacturer after several suppliers checked. One of the
guys at the bearing place sugested a sealed bearing which had the proper OD
but the ID was too large. He then suggested putting a short piece of bronze
sleeve bearing he had to slip inside the available bearing to make the ID
smaller to fit the thru bolt. The bronze sleeve job was several inches long
and I hack sawed off the right length to fit inside each bearing. It worked
out fine and has been in use for several years. Sorry I don't have any
numbers for you.
73, Dan, N5AR

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com]On Behalf Of Mac McCullough
Sent: Sunday, March 11, 2007 5:47 PM
To: towertalk at contesting.com
Subject: [TowerTalk] US Tower bearings


All ,  I am wanting to replace some of the small diameter bearings that are
pressed and then sort of "set" by dimpling the surrounding aluminum grooved
pulley ...  these bearings are used throughout the UST wire pulley scheme,
presently the one I have in my hand is marked  K 8  made in USA  Nice
Phila... or better yet has anyone replaced this  " my words " poor quality
bearing with a better quality as well sealed type bearing ...  these bearing
frequently seem to seize,  thereby forcing the cable to drag it's self
across the pulley groove and then ruining the pulley in short order ..  I
love the tower,  just not these critical yet cheap bearings they use ..  all
suggestions welcomed ..  thanx  mac/mc  w5mc



Located 46 miles due North of the Alamo, and 121 miles due South of the
Western White House.   see my website at  www.collinsandharrisradios.com
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