Re: Ball screw/nut repair

Express Ballscrew Repair quoted me $700 to $800 EACH and that
was on the low side he said. I made it clear that the ballscrews
were not crashed and that I had a couple of thousands backlash. I
also told him that they were in a hobby machine and I did not need
the typical rush turnaround service. But the guy really did not want
to do it. He kept telling me that there were so many made that I
probably could find NOS screws somewhere??? I passed.
3 other firms quoted me about $750 EACH for a regrind and reball.
One guy wanted $200 just to reball them.
Finally I found Esco Machine in Texas. The guy has been doing
this for 30 years and knew the machine. He said he could
give the ballscrew a light grind and reball for $700 for BOTH.
What a difference. I am going to send mine out in a week or
two and have him do my screws. :-)

My angular contact bearings are worn and need replacing. Anyone
know of a good source for this type of bearing?

Scott

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Mark Vaughan" <mark@...> wrote:
>
> Can I ask what sort of price they charged.
>
> I have seen quotes to regrind Bridgeport ones at £400 to £800
>
> Always seemed a hell of a lot of money
>
> Always been lucky and had good screws on everything I've aquired.
>
> Regs Mark
>
>
>
> Dr. Mark Vaughan Ph'D. B.Eng. M0VAU
>
> Managing Director
>
> Vaughan Industries Ltd, reg in UK no 2561068
>
> Water Care Technology Ltd, reg in UK no 4129351
>
> Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
> Phone/Fax 44 1872 561288
>
> _____
>
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Mark Kenworthy
> Sent: 04 February 2007 20:56
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: RE: [CAD_CAM_EDM_DRO] Re: Ball screw/nut repair
>
>
>
> That's good to check. I agree, with .008" of play, the thrust bearing(s)
> are almost certainly bad.
>
> If you do need your ball screw reground, I've sent 4 ball screw
assemblies
> from my Fadal mills to Express Ball Screw Repair
> (http://www.expressb <http://www.expressballscrewrepair.com>
> allscrewrepair.com), and had good results. You might
> want to give them a try. It's not an inexpensive process, but much less
> expensive than buying new ball screws (at least for the Fadal mills).
>
> Mark
>
> _____
>
> From: CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
> DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
> DRO@yahoogroups.com] On Behalf Of Vince Endter
> Sent: Sunday, February 04, 2007 12:09 PM
> To: CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
> DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: Ball screw/nut repair
>
> I forgot to check the angular contact bearing when I had it apart. I
> will check that Monday.
>
> Vince
>
> [Non-text portions of this message have been removed]
>
>
>
>
>
> [Non-text portions of this message have been removed]
>