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Author Topic: SUPERMAX / Mach Retrofit  (Read 18310 times)

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Re: SUPERMAX / Mach Retrofit
« Reply #10 on: March 30, 2009, 06:02:05 AM »
Vince,
They are all standard metric bearings.
 I got all but the spindle bearings from USA-Bearings-and-Belts.
 The 7207 spindle bearings are from VXB.
 Probably imports but I thought I'd give them a shot.
 I've had pretty good luck with them so far.
Russ

http://stores.shop.ebay.com/USA-Bearings-and-Belts__W0QQ_armrsZ1
http://stores.ebay.com/VXB-Bearings-Skateboard-and-Slotcar
Re: SUPERMAX / Mach Retrofit
« Reply #11 on: March 30, 2009, 10:36:39 PM »
Hello friends,
  Well upon closer inspection, the Z (quill) ballscrew and nut are shot.
What would be the best route to take to get another ?
Send it to be repaired/replaced ?  $ ? $ ?$ ?$ $?
Buy  new screw and nut and machine the ends my self ?
Match something up close on eBay and hack it to fit ?
Got any leads on suppliers ?
3/4"-5 x 12", Single nut - 2 circuits.
Re: SUPERMAX / Mach Retrofit
« Reply #12 on: March 30, 2009, 10:50:01 PM »
Russ,

If they are shot , they can't be repaired. They are just wore out.   >:(  Find a screw and nut thats close and machine the ends to your needs.

Ed
Ed VanEss
Re: SUPERMAX / Mach Retrofit
« Reply #13 on: March 30, 2009, 11:14:36 PM »
Hi Ed,
That's what I figured, looking at eBay now.
Saw a repair place while Googlin' some time back. They said to send them the assy., they would evaluate it and repair or make a new one.
  Would probably cost more than my shop lol.
I'll keep lookin', got a few weeks to look around.
Thanks Ed,

Offline Chaoticone

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Re: SUPERMAX / Mach Retrofit
« Reply #14 on: March 31, 2009, 12:10:20 AM »
RC, If you can do a print with dimensions, Rockford Ball Screw can fix you up with a brand new set of balls, screws and nuts if needed.   ;D

Brett
;D If you could see the things I have in my head, you would be laughing too. ;D

My guard dog is not what you need to worry about!
Re: SUPERMAX / Mach Retrofit
« Reply #15 on: March 31, 2009, 06:14:27 AM »
I will make an inquiry with them.....Thanks Brett

Offline Hood

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Re: SUPERMAX / Mach Retrofit
« Reply #16 on: March 31, 2009, 03:51:36 PM »
RC
 Looks like a nice sturdy mill, very similar to the Beaver from the neck down. Shame about the ballscrew but hopefully you can get one at a reasonable price.

Brett
 Always wondered where you had gotten your balls from ;D

Hood
Re: SUPERMAX / Mach Retrofit
« Reply #17 on: March 31, 2009, 04:55:46 PM »
Hood,
 Yup...nice mill, puny head.
The "Z" screw is being a PITA.
The only ones Rockford has to fit are semi-precision rolled w/.005" to .015" backlash. There is no room for their preloaded double nut type.
Thomson has just what I need...$1020.00 plus end prep if I want it.
Nook will let me know tomorrow.
eBay.....not much right now and most is in Asia.
I'm contemplating going w/new oversize balls..(wife agrees  ;D ), and just let it run a little rough for a while. $12 on eBay.
I'll keep looking though.
The cracked yoke is probably what caused the problem. It was cracked and hinging up and down causing a hell of a bind on the nut and screw.
Oh well.....not quite the price of a new mill in this one....YET ! lol 
See ya,
RC
« Last Edit: March 31, 2009, 04:57:20 PM by Overloaded »

Offline RICH

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Re: SUPERMAX / Mach Retrofit
« Reply #18 on: April 01, 2009, 09:05:38 AM »
RC,
Maching the ends of the ball screws can be a pain in the neck.Depends on how deep
the hardening is, so you got to get below it. To get there i had to grind the ball
thread off and on the ones i have done the hardening was into the thread. The carbide
cutters worked. I don't know the make ( bought them by $/lb ).
RICH
Re: SUPERMAX / Mach Retrofit
« Reply #19 on: April 01, 2009, 10:09:41 AM »
Hey RICH,
  That is a good point for sure. I ran into that before with Thomson screws I got from McMaster Carr.
What I did was anneal the ends, then they machined pretty well. It actually softened a few extra threads but the nut never went there so it was OK.
They were 3/4" and hard as........about .150" deep.
These were their sloppy rolled screws though, I wouldn't do that to a &1200 per foot set-up.

Thanks,
RC