Re: [CAD_CAM_EDM_DRO] Ballscrew Slop Question

I agree with Joe that it is prob an end bearing problem. The rolled HIWIN
bport screw set B2505x is not shown as being preloaded in the catalog but It
should not have that much play.
The ground ones (B3205x) are preloaded and have zero play.

Of course you can just wiggle things to confirm that it is the end bearings
and not the ballnut.

As Joe said it is most likely you have end bearing (s) backwards or not
preloaded.

Sounds like the bearings are standard 7204 40degree angular
contact in db mounting. Expect to pay about $25.00 each for them for abec1
but I doubt that they are bad. Just read the number on them. I am just
guessing.

I have some bridgeport manuals packed away (god knows where) and could dig
for them if you really need it.

Leslie Watts
L M Watts Furniture
Tiger, Georgia USA
http://www.rabun.net/~leswatts/wattsfurniturewp.html

----- Original Message -----
From: <jh1221@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, February 13, 2001 11:29 AM
Subject: [CAD_CAM_EDM_DRO] Ballscrew Slop Question


> Hello All, I just installed ballscrews on my Bridgeport mill, in
> preparation for a CNC conversion. They were purchased from Hi-Win
> Industries. After installation, I noticed that there is about .002-
> .003 slop in either direction on the X axis. (the Y seems OK)