petermichaux wrote

> .0002 on the press fit for the ball bearings
> The aluminum might work it depends on how thick it is and what grade. Go
with
> steel and you don't have to worry about it.
> MSC sells the bellows to protect the screws, but it is pricey.

yeah, too pricey for me.

> "Would layers of aluminum foil be ok for the spacers?"
> NO. Did it right the first time. No short cuts.
> I always thought that bearings were preloaded with springs, but I make
bearing
> housing for taper roller bearings.

In the NSK linear motion catalogue there are no supports with spring
preloaded bearings.

> I am not trying to be rude but does your mama know you are playing with
> machines.

yes

> Michael