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21. Re: [TowerTalk] Thrust bearings (score: 1): Author: Jon Pearl - W4ABC <jonpearl@tampabay.rr.com>; Date: Mon, 10 Oct 2011 10:44:32 -0400; Hi John. Yes! Except for the mounting holes in both halves - the same. My lower Delrin donut rode squarely on the bearing plate above the rotor and was drilled and countersunk for four mounting bolts; /archives//html/Towertalk/2011-10/msg00132.html (9,449 bytes)
22. Re: [TowerTalk] Thrust bearings (score: 1): Author: "Julio Peralta" <jperalta4@verizon.net>; Date: Mon, 10 Oct 2011 10:51:25 -0400; Yes you're correct I installed the last one I had about 3 or 4 years ago on a house bracketed Rohn 25 tower. Julio, W4HY I seem to remember that someone (Rohn?) used to market an "Amateur Bearing" th; /archives//html/Towertalk/2011-10/msg00133.html (8,731 bytes)
23. Re: [TowerTalk] Thrust bearings (score: 1): Author: K8RI on TT <k8ri-on-towertalk@tm.net>; Date: Mon, 10 Oct 2011 12:29:33 -0400; Oil soaked, hard wood "pillow blocks" work very well and were an "old time" bearing used in machinery. 73 Roger (K8RI) _______________________________________________ ________________________________; /archives//html/Towertalk/2011-10/msg00134.html (9,649 bytes)
24. Re: [TowerTalk] Thrust bearings (score: 1): Author: "Mike Cizek" <mikew3mc@gmail.com>; Date: Mon, 10 Oct 2011 18:45:54 -0400; I have a hardwood bushing on one of my towers here in MD. After about 12 years, is has dried out and split so it needs replacing. I have also seen phenolic blocks used for this. 73, Mike W3MC _______; /archives//html/Towertalk/2011-10/msg00138.html (11,586 bytes)
25. Re: [TowerTalk] Thrust bearings (score: 1): Author: Steve Maki <lists@oakcom.org>; Date: Mon, 10 Oct 2011 18:53:55 -0400; On my home made swing-gate side mounts, I use a simple collar made of a short piece of steel pipe of slightly larger size ID than the mast OD. In spite of initial concerns of mast wear, it does not s; /archives//html/Towertalk/2011-10/msg00139.html (10,316 bytes)
26. Re: [TowerTalk] Thrust bearings (score: 1): Author: K8RI on TT <k8ri-on-towertalk@tm.net>; Date: Mon, 10 Oct 2011 19:07:02 -0400; I too have used that method for over 25 years and never had a failure. I never put any lube on it either. 73 Roger (K8RI) _______________________________________________ _____________________________; /archives//html/Towertalk/2011-10/msg00140.html (11,169 bytes)
27. Re: [TowerTalk] Thrust bearings (score: 1): Author: jpk5lad@cox.net; Date: Mon, 10 Oct 2011 12:16:28 -0500; The hole was cut for a 2" mast but Rohn also sold a cast metal bushing to stick in that hole, one for 1 1/2" masts and one for 1 1/4" mast. Not too fancy. Jim - K5LAD == == Growing old is like being; /archives//html/Towertalk/2011-10/msg00147.html (9,227 bytes)
28. Re: [TowerTalk] Thrust bearings (score: 1): Author: Bill Aycock <baycock2@centurytel.net>; Date: Wed, 12 Oct 2011 16:24:22 -0500; Charlie- a few disconnected comments-- 1. With plastics, particularly Teflon, cold flow is a problem. 2. Rohn always said to NOT grease those bearings, because it just picked up dirt and grit. On the; /archives//html/Towertalk/2011-10/msg00184.html (9,834 bytes)
29. [TowerTalk] thrust bearings (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Fri, 14 Oct 2011 03:21:31 -0700; I think a Sleeve bearing would have been better still. <:-)) That's what makes the wood and other split blocks so nice. I'm not sure if that will make them last any longer, but it will make them run; /archives//html/Towertalk/2011-10/msg00229.html (14,052 bytes)
30. Re: [TowerTalk] thrust bearings (score: 1): Author: K8RI on TT <k8ri-on-towertalk@tm.net>; Date: Fri, 14 Oct 2011 23:51:37 -0400; That's what I'm using with the exception of lighter loads and there I'm using 2" 6061T6 with a 1/4" wall. Good place for roller bearings instead of ball bearings. <:-)) Which I probably will in some; /archives//html/Towertalk/2011-10/msg00245.html (17,355 bytes)
31. [TowerTalk] Thrust bearings (score: 1): Author: Michael Goins <wmgoins@gmail.com>; Date: Tue, 26 Feb 2013 21:24:52 -0600; Thrust bearings (like baluns) seem to be one of those things that create a lot of confusion in the ham community. They are used to keep the antenna centered on the rotor to eliminate side strain, or; /archives//html/Towertalk/2013-02/msg00396.html (7,930 bytes)
32. Re: [TowerTalk] Thrust bearings (score: 1): Author: Larry Loen <lwloen@gmail.com>; Date: Thu, 28 Feb 2013 08:39:55 -0700; To me, it's a no brainer. 150 dollars to almost certainly lengthen the life of a much more costly rotor? Let's suppose the rotor's specs will take that compressive weight. Wouldn't logic indicate tha; /archives//html/Towertalk/2013-02/msg00399.html (9,574 bytes)
33. Re: [TowerTalk] Thrust bearings (score: 1): Author: Tom Anderson <andersonww5l@sbcglobal.net>; Date: Thu, 28 Feb 2013 08:17:34 -0800 (PST); Even with a thrust bearing a rotor can need occasional repair. I've got a Ham IV mid 1980s vintage and when we were redoing my crankup tower a while back we undid the screws holding the mast , moved; /archives//html/Towertalk/2013-02/msg00401.html (7,759 bytes)
34. Re: [TowerTalk] Thrust bearings (score: 1): Author: Grant Saviers <grants2@pacbell.net>; Date: Thu, 28 Feb 2013 09:54:07 -0800; Lot's of confusion because commercial "thrust" bearings are really some combination of thrust and radial load bearings. What most hams need with tower installations is a bearing for radial loads, som; /archives//html/Towertalk/2013-02/msg00402.html (15,018 bytes)
35. Re: [TowerTalk] Thrust bearings (score: 1): Author: K8RI <K8RI-on-TowerTalk@tm.net>; Date: Thu, 28 Feb 2013 13:54:14 -0500; On 2/26/2013 10:24 PM, Michael Goins wrote: Thrust bearings (like baluns) seem to be one of those things that create a lot of confusion in the ham community. They are used to keep the antenna centere; /archives//html/Towertalk/2013-02/msg00404.html (12,740 bytes)
36. [TowerTalk] Thrust bearings (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Thu, 28 Feb 2013 15:17:26 -0500; Gentlemen, I have read the thread with interest, and here is my solution. Back in 1978, and in order to cope with the likely forces applied to a tower top thrust race, I looked at the commercial prod; /archives//html/Towertalk/2013-02/msg00405.html (9,270 bytes)
37. Re: [TowerTalk] Thrust bearings (score: 1): Author: K8RI <K8RI-on-TowerTalk@tm.net>; Date: Thu, 28 Feb 2013 15:46:42 -0500; I have read the thread with interest, and here is my solution. Back in 1978, and in order to cope with the likely forces applied to a tower top thrust race, I looked at the commercial products availa; /archives//html/Towertalk/2013-02/msg00406.html (10,732 bytes)
38. Re: [TowerTalk] Thrust bearings (score: 1): Author: "John E. Cleeve" <g3jvc@jcleeve.idps.co.uk>; Date: Thu, 28 Feb 2013 16:41:45 -0500; Hello Roger The scrap aluminium tube I used has a wall thickness of about 0.75 inches, the object being try and find bearings/materials that I could fairly easily fit together in order to fabricate t; /archives//html/Towertalk/2013-02/msg00407.html (12,447 bytes)
39. Re: [TowerTalk] Thrust bearings (score: 1): Author: K7LXC@aol.com; Date: Fri, 1 Mar 2013 14:44:46 -0500 (EST); Wouldn't logic indicate that, regardless, it will last longer if we don't press all that weight on the rotor 24 by 7, forever? Do your car wheel bearings wear out because there is weight on them the; /archives//html/Towertalk/2013-03/msg00003.html (7,807 bytes)
40. Re: [TowerTalk] Thrust bearings (score: 1): Author: K7LXC@aol.com; Date: Fri, 1 Mar 2013 14:47:17 -0500 (EST); marine/wheel bearing grease since its its waterproof. The grease folks advise don't mix greases, like lithium and moly, or wheel bearing grease. So I use wheel bearing grease all the time. Grease is; /archives//html/Towertalk/2013-03/msg00004.html (6,800 bytes)

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