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Trying to identify Spline standard

Trying to identify Spline standard

Trying to identify Spline standard

(OP)
I am trying to help a friend of mine locate a splined shaft for a constant velocity bearing (Rockford part# 71L-018 or 71L-70). I asked Rockford for the specs and this is exactly what they replied with:

 18 teeth
 24/48 pitch
 45 degree pressure angle

 reference only:
 0.997" over 0.130 pins
 0.800 major diameter

I have absolutely no experience dealing with splined shafts, so any help would be great.  From my research so far, it looks like 18 teeth is not an ANSI standard?  Then, I came across DIN 5480, 5481, and 5482 and pretty much got confused.

Supposedly, these bearings were specially made for Siemens, but I am not 100% certain on that.

Basically, I am trying to figure whether there is an off-the-shelf splined shaft that exists, or whether I would need to get one custom machined.

Any help is appreciated.

RE: Trying to identify Spline standard

I have been checking my Design and Production Kent Engineering and my Machinery Handbooks and it appears that the pitch 24/48 is used with ASA B5.15-1946 and ANSI B92.1-1970 involute splines, and SAE 1949 involute serrations.
The tooth cross section of a spline is similar to a spur gear design and much of their design formulae and nomenclature are similar.
Try to reference a more recent engineering handbook since my books are a little old as you may get more info on the spline of interest.
It seems to me that your friend's inquiry relates to front wheel drive constant velocity joints.  

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