[TowerTalk] Replacement Thrust Bearing

[Roger (K8RI) on TT]

All of the new TB-3s and 4s I've tried felt very rough.  A real bearing 
would be replaced if it were that rough, BUT the do the job well.  
Gene's suggestion are much better bearings.  My new (used, but new to 
me)LM470 has one of those mounted on top.  I'd suggest a cover of some 
sort to protect it from the rain.  They get rusty looking and look like 
crap, but continue to work well.

73

Roger  (K8RI)

On 4/17/2015 12:49 PM, Robert Harmon 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 used.
> 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:   https://www.arraysolutions.com/Products/thrustbearing.htm
> Anyway, what say you ?
>
>
> thanks,
> Bob
> K6UJ
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73

Roger (K8RI)


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