[TowerTalk] Lubricants and Coatings corrosion control

[k7lxc at aol.com]

>  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.  >  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.     So you're proposing using Lanacote on the bearings and races of the Rohn TB-3 and TB-4? I don't think this is a good idea. Or did I misinterpret your statement?     Since the races and bearings aren't sealed, all of the grit and airborne contamination will sluice thru them over time. Any lubricant or similar material will just attract and retain the aforementioned junk.      Real bearings with zerk fittings are another matter.  Cheers,Steve    K7LXCTOWER TECH