Thought I would share some knowledge I gained in a recent
rework/refurbishing on two thrust bearings I had in my inventory. The
two bearings were a Rohn TB3 and Rohn TB4 which I had acquired some time
ago on some used tower, accessories, etc. The two bearings had been
beaten up by the weather and had suffered severe corrosion out in the
elements. They appeared to be salvageable so I took them to a very
reputable machine shop to be worked on here in Eastern NC on the
southern outer banks.
The owner is very knowledgeable with years of extensive experience and a
very nice guy. A pleasure to know! He stated he could remove the old
hardware and get the bearings to perform as they should. I showed him
the new cost of said bearings and he gave me a price I could not refuse.
They would not have to end up in the junk/scrap pile.
Very pleased with the result and he offered the following advice based
on dissimilar metals and the salt air environment at our location. The
advice would also apply to other locales as well. When I need to replace
the bolts/hardware that hold the mast in place going thru the bearing he
recommended using a product called "Lanacote". If I was going to use
stainless hardware with the aluminum of the bearing it would be
beneficial. Other hardware choices would also benefit from the
"Lanacote" coating. A web search shows the product available from
numerous sources and can be obtained in various amounts and applications
including spray cans and bottles.
I am wondering if it would be beneficial on cam followers such as what
is used on rotating towers as well as tic ring hardware/rollers, etc.?
Hazer hardware as well as any tower with mechanical moving parts? What
say the group and the extensive knowledge found here? I believe I will
use this product. If there is a similar product that protects against
corrosion I would be interested in hearing about it. In particular I
have seen cam followers and tic ring corrosion that is very disturbing.
How many times something like this may need to be applied over the
course of a year is a question I still have. Maybe this info is helpful
to the group and others can share their thoughts. 73! Charles "Ed" K5OF
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