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Torque tube bearings only lasted for 2k after rebuild!
Hello
Last autumn I finished torque tube rebuild, since, I only managed to drive 2k miles before all too familiar sound of grinding bearings began.
...3 out of 4 bearing have spat out some of their grease and none of the 4 sound too healthy anymore, 1 is especially bad.
The exact code of the bearing I used: NTN TS3-6006ZZC4/LX11Q7
The grease in them isn't runny at all, even when heated to 200°C+, It's really thick, atleast now. Something in them doesn't like the torque tube conditions. The same NTN bearing is also available with C5 tolerance, but I doubt it would last any longer.
Has anyone used some different brand C3 bearings with lasting results? Maybe those would have less viscous grease in them.
I've made a tool to get inner sleeves out and those are in great shape, so are the outer supports. 1000€ 'super bearings' are out of my budget.
I’ve got to wonder if the rubber mounts are really in “great shape.” If they aren’t... I’d think that excessive movement is probably not good for bearings?
http://www.blackseard.com/site/ will get you set up with either the right bearings or the service to rebuild your TT. Tell Constantine I sent ya.
I’ll give a double-thumbs up to Constantine... but the original poster did say $1000 was “out of budget.”
That said... the job is a PITA to keep redoing yourself. You _won’t_ have to worry about that with Superbearings. It’s money _very_ well spent. Nice guy and _excellent_ work.
Sorry to hear this bud, that job is a real pain! I installed my rebuilt TT (rebuilt a few years ago) and have driven my 84 raround 8,000 miles so far without issue. These are the bearings I used:
Thanks for the ideas.
I'll try sourcing the bearings myself one more time.
H.F.B, hard to read from picture, your bearings seem to be E2.6006-2Z/C3? or C4?
And Pfarah I assume those were C3 as well?
I might give SKF a shot, I'll check availability.
I would be more suspect of an incorrect longitudinal location of the bearings as a contributor to premature failure than the specifications of the bearings.
It is important that the bearings are located accurately within the tube to avoid being out of harmonic phase with the shaft.
@ElRicardo : I've been resistant to the idea with friends of mine, but is this counterfeiting something that blockchain has a chance to help with? I don't know enough about the implementation but everything I've read seems like this would be a good use of the technology.
As I understand it, one of the big advantages of blockchain is to validate the authenticity and ownership of, currently, primarily, virtual currencies. The idea is that the blockchain itself can't be hacked or counterfeited and retains full traceability of ownership throughout any transaction, as well as a record of every transaction. Lately, my reading indicates that there have been some "cracks in the armor" of that security but, by and large, I think that most of the consensus is that it is pretty robust.
For physical goods the idea is to attach (somehow) the same level of security and traceability. In the conversations I've had, most of the discussion/ideas are around verification of sustainable resources and sourcing but the same concept could be applied just as easily to anti-counterfeiting measures. The trick of it all is, as always, in the implementation. I was sort of hoping that someone deeper into those kinds of issues may have heard a bit more about what that might look like. I'm a fan of the idea (especially for my cars' parts!) I just don't know how one would do it with physical goods.
02-07-2022, 01:42 PM
Torque tube bearings only lasted for 2k after rebuild!
