Good info - Linky - https://www.surpluscenter.com/_MoreSpecs/AS4B.pdf What a deal compared to Dx stuff. I do like Dx eng a lot just cannot afford those prices. A friend uses Santa Fe distributing and
Here's another supplier (attached) Can get in all SS if you want, and can get 3" also. Bob K6UJ _______________________________________________ _______________________________________________ TowerTa
I sent another supplier for a thrust bearing but it didn't attach to my message.Here it is again. They have SS bearings if you like and also have 3" http://www.bearingson.com/category/4-bolt_flanges
Here is an interesting thrust bearing video from DXE https://www.youtube.com/watch?v=EuewFM15Py4 73 Tim K3LR I sent another supplier for a thrust bearing but it didn't attach to my message.Here it is
Looks really well made. I had the original Rohn counterpart for years and it just kept on going. I added a zerk fitting so I could grease it. They last a very long time dry without lube, but I am ana
Looks nice, but one thing I just have not been able to understand for years Tower thrust bearings are a LOW rotation speed, high load application, probably the WORST place to use ball bearings. I wo
And, in fact, that's what I do. One mast has a brass shaft collar that rides on a slab of Nylatron (GS grade I think), and the other mast uses a scrap TB-3 that was machined to replace the ball asse
HELLO Did you use one of this on top of the tower or another one inside tower, between rotor and top of the tower? thanks, Jorge -- 73, Jorge CX6VM/CW5W ______________________________________________
On 12/9/16 6:14 AM, charlie@thegallos.com wrote: Looks really well made. I had the original Rohn counterpart for years and it just kept on going. I added a zerk fitting so I could grease it. They las
Jorge, If this question is directed at me, no, I only use a bearing/bushing at the top of the tower. I generally have at least 10 feet of mast (~3m) inside the tower and I have always thought that th
Hello Geo thanks very much and I would like to know other experiences I have my setup same as you. 1 year ago I needed to remove a rotor and was a pain, mast bend with the wind, broken my thrust bear
Yeah, I suspect they will I'm sort of surprised however that they aren't made that way, although by FEEL, that may be how the Yaesu thrust bearing is made. Heck, a piece of UMHW PE would probably wo
Delrin has very limited life in the heat and UV. I lived in AZ for 35 years. N7RT/4 For amateur use, you could probably buy a slab of the appropriate plastic from Cadillac or McMaster-Carr, use a hol
tapered roller bearings, or today, do what most of industry does, and use an engineering plastic bearing. I mean nylatron is practically begging for that use. No elevated temps (folks reading - elev
UHMW PE has a horrible coefficient of expansion. I don't know about Nylatron. N7RT/4 --Original Message-- From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of charlie@thegallos.com
<snip> <snip> Which is why I said we don't need torlon of vespil <g> Usually, if you are using those, you get them injection molded to shape, unless it is a high buck one off, as they material is rea
I strongly agree, a UV resistant plastic is a better way to go. I use black UHMW which is UV resistant and is almost as slippery as teflon, rulon, torlon or exotics like Vespel and < 1/10 the cost. I
<snip> Ah, but remember, it isn't exposed to UV, as it is INSIDE the bearing housing. Heat is an issue, which is why I did NOT suggest Delrin, but Nylatron is good at much higher heat levels. For th
Another nice thing about using a plastic bearing is the block can be cut in half and installed/removed/maintained without taking the mast out of the tower, or out of the rotator! Chris KF7P _________
But this isn't a micron clearance kind of application,is it? Aluminum is 22 ppm/degree C Steel is 12 UHMW PE is about 100 Nylons without glass seem to be in the 75-100 range Acetal with glass filling