Re: [CAD_CAM_EDM_DRO] Roller Bearings link ? ( was Bad Bearing ( was Re: stuck stepper

I have a set of Starrett snap bore gages that I use.
I can get things to a couple tenths with them.
Import ones are prob about as good and are about
$12 for a set of four.

I also made up a set of tapered plug gages for some standard
bearing sizes. They have a very slight taper and some machined rings
that show the max and min allowed bore sizes, but of course
they only show the surface of the bored hole.

Les

Leslie Watts
L M Watts Furniture
Tiger, Georgia USA
http://www.alltel.net/~leswatts/wattsfurniturewp.html
engineering page:
http://www.alltel.net/~leswatts/shop.html

----- Original Message -----
From: "turbulatordude" <davemucha@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, September 13, 2002 8:56 PM
Subject: [CAD_CAM_EDM_DRO] Roller Bearings link ? ( was Bad Bearing ( was
Re: stuck stepper


> I am lucky in that the houseing allows the bearing to move and the
> spring washers hole the bearing in place. Very good fit.
>
> Believe it or not, I use an old set of inside dividers. seems that
> either I have just been doing it too long or I can just 'feel' the
> friction of the surface well enough to get things dead on.
>
> There are some times when I would like a press fit, and the parts is
> really hot from a lot of boring that I will take the hot part onto
> the shaft/bearing, press it, and let it cool. It's great going on,
> but I hate to have to take them apart later.
>
> Dave
>
>
>
>
>
>
> --- In CAD_CAM_EDM_DRO@y..., "Erik Reikes" <ereikes@r...> wrote:
> > > It seems that the rear bearing may have frozen, then spun in it's
> > > housing before the rack gave up. since it appears to have spun
> in
> > > the housing it needed a little persuation to come out. now it
> will
> > > slide from the pressure of the spring washers.
> > >
> > > Dave
> >
> > When you get the new bearing here's a little trick I use to get a
> > press fit in a slightly too large hole. Put the housing in a vise
> > and use a center punch to create a series of divots around the
> inside
> > of the bearing seat. These divots will displace some metal up and
> > allow you to press in a new bearing in a slightly too large hole...
> >
> > The reason I know this is that my bored out bearing pockets end up
> > being slightly oversize about half the time. I need to get an ID
> > measuring tool because calipers just don't cut it for .0005
> tolerance
> > bearing pockets.
> >
> > HTH
> >
> > -Erik Reikes
>
>
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