Jim,
They are sealed and assume made to last for a long time running at high speed
in other applications. I don’t know but would assume in this light duty
application they would last a lifetime. You can’t tell the performance is not
like new from your spin test.
Personally, I would not hesitate to use them but I don’t worry about stuff like
that as much as many others. That said, you can certainly buy them on EBAY,
brand new, for WAY less than $50 each.
4 here for $16.95 each
https://www.ebay.com/itm/224838712913?hash=item34596e7e51:g:qp4AAOSwn7piCqyF
3 here for $22.99
https://www.ebay.com/itm/265376709709?hash=item3dc9af3c4d:g:qv0AAOSwliBgRq0f
More than 10 available for $27.65 but you can buy 24 with $12.95 total for
shipping
https://www.ebay.com/itm/133366171184?
epid=1017931175&hash=item1f0d3e4630:g:6SwAAOSwmQNedDq~
73…Stan, K5GO
> On Aug 11, 2022, at 12:20 AM, James M. Galm, W8WTS <jim@w8wts.com> wrote:
> Hello Ed et al.,
>
> Thanks for the great info. The engineering data from McGill is
> extraordinarily helpful. I believe that the bearings in my rings are McGill
> CCFH 1 1/2 SB. From the engineering data book, these bearings have crowned
> ODs, hex holes in the flange end, lubrication seals, and can accept 3/16 in
> press in grease fittings.
>
> Right now, all 24 of my bearings spin freely, but do not have grease fittings
> installed. My options are,
>
> 1. Replace all 24 of them, setting me back over $1200.
>
> 2. Install grease fittings into the bearings I have and load them with fresh
> Lucas X-TRA heavy duty grease.
>
> 3. Leave them alone and put them up as-is.
>
> What would others do?
>
> 73,
>
> Jim, W8WTS
>
>> Message: 8
>> Date: Tue, 9 Aug 2022 08:29:45 -0400
>> From: CEPitts <cpitts@ec.rr.com>
>> To: towertalk@contesting.com
>> Subject: [TowerTalk] Experience with K0XG guy ring bearings?
>> Message-ID: <62F25339.8060907@ec.rr.com>
>> Content-Type: text/plain; charset=utf-8; format=flowed
>> Hi Jim and others who may need the following info. I speak with
>> experience. I have some rings for 55G and a tower project that has been
>> in the works with setbacks due to hurricanes and other storms, Extensive
>> tree damage and clearing of downed trees. Pandemic issues as well as
>> what most of us would call general everyday living sometimes taking a
>> priority with family and work.
>> Rings were installed on tower in sections laying on ground waiting for
>> crane install and the delays began. Rings exposed to elements. The
>> rotation began to suffer with some of the cam followers freezing up.
>> I believe it was Grant KZ1W who may have addressed replacing cam
>> followers in a previous post. If I am mistaken I apologize to the
>> original person who may have addressed issues regarding the cam followers.
>> Upon removing the followers that were giving me some issues I purchased
>> from MRO Supply the following two cam followers that are on my rings
>> McGill CF 1 1/2 SB MRO#2249463 and McGill CFH 1 3/ 8 SB MRO# 2251461.
>> The "CF" and "CFH" nomenclature was stamped onto the followers if I
>> remember correctly and I verified these were the ones needed with
>> Richard K0XG and that was approximately 3-4 years ago. Been difficult as
>> of late catching up with K0XG.
>> Followers can be difficult to remove however I was successful on most
>> except two. Those two I will most likely take to my local mechanic down
>> the road who can cut them out of the ring or my local machine shop who
>> can do the removal.
>> I also purchased the grease fittings that can go into the new followers.
>> I was fortunate to have gone up to Steve NR4M QTH for a contest a while
>> back and he let me use a press in his extensive shop to press the
>> fittings into the followers.
>> So they are ready to go for a install into the rings time permitting and
>> as the project proceeds.
>> MRO Supply was my source but there are others on the web. Very happy
>> with them.
>> My experience is exposure to weather over time is not your friend unless
>> frequently rotated and most likely needing some sort of maintenance,
>> greasing, etc. My salt air is of course the worst.environment.
>> These links may be helpful:
>> https://www.mrosupply.com/
>> https://www.regalrexnord.com/-/media/Files/Literature/Events/AAAE-2019/McGill-Cam-Follower-Bearings-Brochure-Form-8991E.pdf?la=en&hash=35A797B060828CF407C36A2822353ABE67D81D45
>> https://www.bearing-supplies.co.uk/mcgill.pdf
>> https://www.ahrinternational.com/PDF_catalogues/Mcgill/camrol.pdf
>> Hope this helps others! 73! Ed K5OF
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