Member Login

Remember Me
Forgot Password?
Join Us!

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!

Join Eng-Tips
*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.
Jobs from Indeed

Link To This Forum!

Partner Button
Add Stickiness To Your Site By Linking To This Professionally Managed Technical Forum.
Just copy and paste the
code below into your site.

DIN 5480 Spline Tolerance

DIN 5480 Spline Tolerance

I've been working with ISO tolerances for a while and have been puzzled by this. Are the classes used for splines the same as for general holes and shafts even though the nomenclature is reversed?

A typical call out for a shaft could be 150f8. However the tolerance on a spline shaft would be 8f. Is this the same system? Or is there a separate system for splines. Metric threads reverse the letter/number arrangement also. Can anyone tell me why?

RE: DIN 5480 Spline Tolerance

The spline tolerances do not apply to the outside diameter of the spline, rather they define the "fit" between the external and internal splines. Splines with tolerances 9H/8f will have small backlash ("clearance between the teeth").
The concept of using letters/numbers is similar as in ISO fits for shafts, but here they apply to different features, mostly tooth thickness/space.
The DIN5480 (October 1991) standard explains the concept in details and includes charts with precalculated values for splines. I highly recommend to buy it. There is also the English version.
Check also the newest ISO4156 (October 2006) standard.  

RE: DIN 5480 Spline Tolerance

I was afraid you'd tell me that.

I knew the tolerance applied to the tooth thickness or space width. I was hoping I could make some sense out of it and use the tools I already have. That doesn't appear to be the case. I get to buy more reference material.

Thank you.

RE: DIN 5480 Spline Tolerance

I am surprised that there would not be a relationship to the general ISO tolerances based on the tooth thickness
or space width.  Our buddies across the pond do seem to be very standard oriented.

RE: DIN 5480 Spline Tolerance

Also, this standard has as many as over 14 sections and you can buy them separately. Those sections contain different moduls. Section 14 talks about tolerances and fits.

Red Flag This Post

Please let us know here why the post below 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!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close