[TowerTalk] Replacement Thrust Bearing

Bert Almemo balmemo at sympatico.ca
Fri Apr 17 15:57:49 EDT 2015

Hi Bob,

Drill 2 new holes in the flange of the thrust bearing if there is space
available. Problem solved! ;-) 

73 Bert, VE3NR

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
jdlambrightatty at gmail.com
Sent: Friday, April 17, 2015 1:15 PM
To: Robert Harmon
Cc: towertalk at contesting.com
Subject: Re: [TowerTalk] Replacement Thrust Bearing

I was at Array Solutions a couple of weeks ago and bought two of their TB2
thrust bearings to go on my UST HDX-589 towers. The ones previously on my
tower were 4 hole bearings, but the 2 hole ones from Array Solutions fit
exactly in two diagonal holes where the old bearings were installed. 

They do have grease zerks and cost just over $100 each. 

J D Lambright - KF5U

Sent from my iPhone

> On Apr 17, 2015, at 11:49 AM, Robert Harmon <k6uj at pacbell.net> wrote:
> I am overhauling my rotator and thought it would be good to replace my
thrust bearing also.
> I have the Rohn TB3 bearing now.  It has been in use for 18 years and
feels pretty rough.
> Im thinking of going with a different bearing this time with a steel 
> body and greased. (grease fitting) Looked thru the archives on tower 
> talk to find out what others have used and can't find much, on this type
of replacement and I know the bearing supply houses have them, just haven't
> pursued searching with them yet.   I would like to know what others have
> If you have used a thrust bearing like this,  could you share the 
> number and supplier ?  Array Solutions has their model TB2 which is 
> this type of bearing but it only has a two hole flange for mounting.  
> They have a larger unit with a 4 hole flange but it is for a larger
diameter mast than 2 inch. I want a 4 hole flange but for 2 inch.
> Here is the info from their webpage:
> Anyway, what say you ?
> thanks,
> Bob
> K6UJ
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