×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Locational Clearance Fits

Locational Clearance Fits

Locational Clearance Fits

(OP)
We typically build round tooling under 5" dia. Our typical clearance is .00015" total for locating fits. Now were getting in to bigger diameters. What is the role of the thumb for biiger dia fits???  

Solid Edge V20

RE: Locational Clearance Fits

cadman1964,

   Look at the limits and fits section of your Machinery's Handbook.  This shows the standard ANSI fits.  This should provide you enough data to identify your current fit, and translate it to your new size.

               JHG

RE: Locational Clearance Fits

Low speed naval shafting must runout less than 0.001 inch when assembled.

The change in centering of a part with 4000 rpm service speed must be  << 0.0001 inch for G 1.0 balance to be maintained between balance machine and installation.
http://www.irdbalancing.com/downloads/TechPaper1BalQualityReqmts.pdf

I interpret your 0.00015" clearance as a diametral clearance.
There have been lots of posts on various message boards debating that "per side" or radial clearance is the proper interpretation.

RE: Locational Clearance Fits

(OP)
Thanks, looked at that yesterday and figured it out. was just wondering if there was a rule of thumb.  

Solid Edge ST3

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources