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Spec's for a 1 3/16" straight spline

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WardHollowayPE

Mechanical
Oct 19, 2000
50
I am trying to find dimensioning specs and tolerances for a splined ID that I have. The major dia measures about 1.190 the minor is 1.010 the tooth measure at .281 wide. This looks close to a SAE spline, but it doesn't match any charts I can find. Normaly they go from 1.125 to 1.250 with nothing in between. Any help would be apprieciated.

Ward Holloway
 
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I checked that site. It has values for 1 1/8 and 1 1/4. This spline is closer to 1 3/16. I know this design is very old so the standard has to be old or non existing.
 
How many teeth?
What about pressure angle?

Remember...
"If you don't use your head,
your going to have to use your feet."
 
For example:
An exteranl 30° pressure angle, 22 tooth, 20/40 spline pitch is 1.150 major and 1.019 minor.

There are many other combinations in this range.....
We need more information.

Remember...
"If you don't use your head,
your going to have to use your feet."
 
An SAE spline is also known as a parallel spline, it has six teeth. There is no pressure angle.
 
My fault for missing the straight=parallel note.

SAE splines can have 4,6,10 or 16 tooth. So I'll assume you after 6 tooth specs.

You are correct about the 1.125max to 1.250max gap in standard sizes.

The .281 width matches the max for the 1-1/8 size, and the 1.010 minor is slightly undersized for the 6A permanent fit (1.012-1.013) spec.

Could this be some sort of custom spline?

Remember...
[navy]"If you don't use your head,[/navy] [idea]
[navy]your going to have to use your feet."[/navy]
 
It's may be custom or a very old standard. This design was originally constructed in the 1940's.
 
Just a thought. Could this be a metric spline??
Is the machine US made or overseas?



Good luck
 
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