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Abner
04-12-2010, 12:31 PM
I want to mill a male splined shaft for a standard tractor PTO. 1.375 OD 6 splines. I can't seem to find specs and it shouldn't be that hard should it? Any help appreciated.
Abner

gda
04-12-2010, 06:55 PM
I used to have it - If I remember the inner diameter is also "round" and the splines are at an obtuse angle.

Have you looked at Surplus Central for a stub shaft - worth ther time and
cutter you would burn through.

https://www.surpluscenter.com/sort.asp?catname=powerTrans&keyword=PSSS

Spin Doctor
04-12-2010, 07:15 PM
This is from my Barber Coleman Hob Handbook

Parallel Key Splines

W'= .250D' where D' is = to the major diameter (OD) and W' is the width of the spline key (this is for 6 tooth splines, 4,10 and 16 tooth splines use a different ratio). In this case the keys are .34375" wide

h'= .1D for Class C fit, Slide under Load
h'= .075D for Class B fit, Slide while not under Load
h'= .05D for Class A fit, Permanent or Press Fit

ADGO_Racing
04-12-2010, 08:48 PM
If you are looking for a cutter checkout www.ashgear.com They have all kinds of horizontal cutters. They also "rent" them by the month, saving you the cost of buying tooling. Unless you plan to do this repeatedly, then it is probably worth buying the cutter.

Abner
04-12-2010, 09:01 PM
gda-
I looked and came to the same conclusion. Ordered it today.
I may take some measurements form it and record those somewhere I will probably never look again.:o

Arcane
04-12-2010, 09:15 PM
To supplement Spin Doctor's information, here's a PDF giving an illustration on page 6 http://www-personal.umich.edu/~seanmurf/baja_2_20_2009/design/splines.pdf

Abner
04-12-2010, 09:39 PM
Arcane that is exactly what I was looking for thank you a bunch

LES A W HARRIS
04-12-2010, 11:48 PM
I have previously posted this link. Same thing.

SAE J499:
http://i37.photobucket.com/albums/e97/CURVIC9/SPLINE%20DATA/STRTSPLN002.jpg

Cheers,

Abner
04-13-2010, 10:09 AM
I have looked on multiple occasions for this information.
I can't say enough good things about this site and it membership....
Thanks!

lazlo
04-13-2010, 10:12 AM
Les, do you have a higher resolution version of that spline chart?

Thanks!

Robert

precisionmetal
04-13-2010, 10:31 AM
lazlo,

Try these:

http://i37.photobucket.com/albums/e97/CURVIC9/SPLINE%20DATA/STRTSPLN003.jpg

http://i37.photobucket.com/albums/e97/CURVIC9/SPLINE%20DATA/STRTSPLN004.jpg

http://i37.photobucket.com/albums/e97/CURVIC9/SPLINE%20DATA/STRTSPLN005.jpg

http://i37.photobucket.com/albums/e97/CURVIC9/SPLINE%20DATA/STRTSPLN006.jpg

http://i37.photobucket.com/albums/e97/CURVIC9/SPLINE%20DATA/STRTSPLN007.jpg

http://i37.photobucket.com/albums/e97/CURVIC9/SPLINE%20DATA/STRTSPLN008.jpg

lazlo
04-13-2010, 10:34 AM
Thanks!!http://i164.photobucket.com/albums/u15/rtgeorge_album/dot.gif