![]() ![]() I have experience with this particular 16 teeth profile to suit 3.500" shafts as it's quite common in the mining machinery sector.īelow is a spec I came up with for the shaft to mate with a class B hub (to slide when not under load). Then, based on the manufacturing methods and finished machining tolerances that those methods can achieve, you decide the final machined tolerance the manufacturer is to adhere to.Īs a basic guide I start off by referencing the 'ISO Limits & Fits' data and then refine that to suit the application. You use the internal specs (class A, B or C) as a guide for the basic dimensions. ![]() So you need to rely on experience and engineering skills to tolerance the dimensions for the shaft. It offers no recommendations for the shaft. The SAE standard is derived from the tight & consistent tolerances that can be achieved when using a broach for manufacturing the internal profile. Unfortunately I only have 'recommended' dimensions for the SAE 10 spline. ![]() Look at any other straight-sided spline standard that exists worldwide and it will give you dimensions for the shaft.BS, ISO, DIN, AUS, etc. You're working with one of the silliest standards an American institution has come up with.
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