Wow, I left this topic a while ago. Sorry
Thanks guys for you input.
I have certainly taken your comments on board and will look at those 7900 series a/c bearings.
I'm also considering a double row tapered roller, 4-point contact bearings and a recent discovery for me; combined needle roller bearings (from Nadella) that have thrust load capacity in both directions. (Thinking around 50-60mm bore for these types.)
My problem remains; I need deflection for applied moment load data. Apart from the 4-point contact type, it's not supplied in any data sheets I have seen for other types. I suppose it's not possible to do this due to many factors like obviously preload and arrangment of the bearings right? How can one calculate this without a reasonably sophisticated model? Is there software available for this type of modeling?
The moment loads experienced will be on the order of 100Nm-150Nm (around 1,000 in.lb) and I need to have deflection to arcmin order of magnitude or better. This seem quite realistic with say a 6" bore Kaydon Reali-Slim acording to their data but I need a cheaper alternative.
Working volume I have to work with is up to 11" or so dia with around 2" of axial room to play with.
(Still) waiting on some pricing for some bearings. Seems like they won't bother getting back to me though. Just an idea of the relative costs would be usefull.
Thanks guys.
