Vintage Lead Screw Help

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Vintage Lead Screw Help

Postby Ripper » Fri Mar 01, 2019 3:35 pm

Hello all, I am looking for a y-axis lead screw for the original white 13 x 24 shark. I would be interested in purchasing this item as my old screw end has been damaged.
Thanks for your time,
John
Ripper
 
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Re: Vintage Lead Screw Help

Postby Ripper » Fri Mar 01, 2019 4:49 pm

By the way, the specs are;

8 threads per inch
1/2” screw diameter
2 start
.250 lead

Thanks,
John
Ripper
 
Posts: 15
Joined: Fri Nov 18, 2016 5:15 pm

Re: Vintage Lead Screw Help

Postby kevinp » Wed Mar 06, 2019 4:18 pm

John,

You can purchase the Hi-Lead (Acme 1/2 x .250 right Hand .25 lead) screw from Roton here:

https://www.roton.com/family/hi-lead-ri ... s-7060404/

Or, you can find it on Granger.com

I just purchased a couple from Roton as I'm upgrading my Shark Pro (all linear X and Y rails, and replacing the 3/8 X axis with the 1/2" screw) per this thread:

viewtopic.php?f=9&t=1342

Disadvantage is the lead screw does not come machined on the ends, so you'll have to purchase a different lead screw coupler to attach it to your motor, and make a bigger bearing hole for the Y to go into at the back of the base. I purchased my motor coupler (and a couple thread clamps) from http://www.dumpstercnc.com. Here is the link to their parts for the Acme 1/2-8 2 Start (4 turn per inch) lead screws

http://dumpstercnc.com/acme_12082.html

Hope that helps.

-Kevin-
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