By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Forum House Ad Zone

Sieg Mill indexes and feedscrews

Reading dials

All Topics | Latest Posts

Search for:  in Thread Title in  
Mike Waldron07/08/2021 10:37:27
51 forum posts

Morning all

could anyone tell me what increments are used on Sieg X1 mill X and Y table feed screws?

From what I’ve seen, it looks like the dials are marked in .1mm divisions, but it looks like they’re stated on a plate to be 0.025?

Can anyone please confirm what thread the feed screw is and what the actual measurements are on the dials?

Thanks

Mike

JasonB07/08/2021 10:39:59
avatar
25215 forum posts
3105 photos
1 articles

See here

Mike Waldron08/08/2021 13:06:50
51 forum posts

Thanks.

what about the pitch of the feedscrews? And the apparently conflicting information of the index increments being 0.025?

Surely they should be 0.1 increments?

Mike

Steviegtr08/08/2021 13:12:41
avatar
2668 forum posts
352 photos

It tells you all using the link that Jason has given you.

Steve.

JasonB08/08/2021 13:31:27
avatar
25215 forum posts
3105 photos
1 articles

Yes pitch of screws is given in the link. 2mm pitch for the metric machine, 20tpi on the imperial. There is no conflict there are 80 divisions of 0.025 so as per the link 80 x 0.025 = 2nn per turn

0.025mm increments will allow for more accurate positioning than 0.1mm divisions. Machine's handwheels are not really big enough to get 0.01mm divisions but should be possible to make up a bigger ring if needed to slip over the existing.

The only thing that I don't like about them is that they number the divisions and have grouped them in multiples of 5 and 10 rather than showing the actual distance represented. Would be nicer if every eighth one were dimensioned 0.2, 0.4, 0.6.............1.8, 0. If it were my machine I would seriously consider buying the dials for a SX2.7 and making a simple sleeve so they could be fitted over the ones of the X2 that way you get 100 divisions each 0.02mm and numbered to represent distance not number of divisions.

Edited By JasonB on 08/08/2021 13:31:48

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Sign up to our Newsletter

Sign up to our newsletter and get a free digital issue.

You can unsubscribe at anytime. View our privacy policy at www.mortons.co.uk/privacy

Latest Forum Posts
Support Our Partners
cowells
Sarik
MERIDIENNE EXHIBITIONS LTD
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest

 

Donate

donate