Re: [CAD_CAM_EDM_DRO] Ball/acme screw question

JJ wrote:

> One last (for now) question: Are acme screws their true diameter?
> ie If I buy a 1/2" screw, do I plan on using 1/2" ID bearings?
>

My 1" acme leadscrews are 1" OD (ie 0.990 - 1.000" major pitch dia).
As the minor dia varies (.7509"-.7800") you can use a .75" ID or smaller
bearing.

If you are looking at the 1/2" acme leadscrews, it is of course 1/2" OD
and the minor dia varies( .3594"-.3800") so even a 3/8" id (.375") bearing
is risky, so you'll probably need to go for an even smaller ID bearing!

regards
Doug Fortune
http://www.cncKITS.com <- Home of the 1KW BEaST power supply for Geckos























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