keyway
Keyways and Seats [ANSI B17.1, 2008]
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T=\frac{P}{\omega}  \Rightarrow  F=\frac{T}{(D/2)}

S_{sy}=0.577 S_{y}

L_{shear} = \frac{Fn}{bS_{sy}}, L_{crush} = \frac{2Fn}{hS_{y}}

According to Budynas (p. 390-394), shaft diameter determine standard sizes for width, height, and key depth. The designer chooses an appropriate key length to carry the torsional load. Failure of the key can be by direct shear, or by bearing stress.

Material Properties for the key can be found in table 1.
Shaft Dia. (D): Shaft Output Power (P): Shaft Speed (\omega):
in hp rpm
Key height (h): Key width (b): Factor of Safety (n):
in in FOS
Yield Strength (S_{y}): ksi

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Copyright © 2015 Estiven R. Sierra