Re: Angular Contact Bearings and Ballscrews question

Jon & group,

I have a small precision screw with a single thrust bearing mounted.
Can't tell what's inside the bearing, it is one piece, though. Made
by Barden, type 200MXX1. Barden is known for their high precicion
bearings which I assume this is, probably very expensive. Rough
dimensions are .4" ID, 1.2" OD, .7" width. Fairly wide in relation
to diameter so it must be double row.

There's only a single nut attaching the bearing to the turned down
end of the screw. This implies the bearing is internally preloaded,
since adjustable preloads usually have two locking nuts or other
method to secure the preload nut in position.

Doug

--- In CAD_CAM_EDM_DRO@y..., Jon Elson <elson@p...> wrote:

(snip)

> I imagine you could find such a single bearing, at least, in that
size, but the
> axial load rating may be limited. There is no such thing as a
double-row
> angular contact bearing, as far as I know, because there would be
no way
> to assemble it.
>
> > Would tapered roller bearings work just as well? Or are they too
long
> > and bulky or something?
>
> This would certainly work, but you may not find them in this small
size.
> They would have more friction than a ball-type bearing. No problem
with
> the axial load, though.
>
> Jon