[amsat-bb] Re: Thrust bearing maintenance

Edward R. Cole kl7uw at acsalaska.net
Wed Jun 1 09:56:14 PDT 2011

At 04:19 AM 6/1/2011, Stephen  E. Belter wrote:
>I have an Yaesu GS-050 thrust bearing that has been installed for 
>about 15 years.  The thrust bearing turns, but requires a lot of force.
>I disassembled the thrust bearing to find that the grease is very 
>sticky (think candy apple sticky), and not lubricative (if that is a word).
>Should I take it to an auto repair shop and ask them to degrease and 
>then lubricate similar to repacking a wheel bearing?
>What kind of grease should be used?
>Thanks and 73, Steve N9IP
>Steve Belter


When I was building my tower#2 in 2008, I considered buying a Rohn 
TH-3 thrust bearing (about $200+) and was advised to look in ebay.  I 
found a nice 3-inch ball-bearing radial-thrust bearing for about $35 
(brand new).  It has a zerk fitting for a grease gun to maintain the 
lubrication (which at the slow rotation of antennas is almost 
never).  Ebay might be cheaper than a re-build.

73, Ed - KL7UW

73, Ed - KL7UW, WD2XSH/45
BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
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