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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