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Torque
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T
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Nm
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Width square head
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s
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mm
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Square head diameter
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D
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mm
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Free diameter
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d
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mm
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Length square head in the hub
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L
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mm
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Minimum yield strength shaft
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Rps
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MPa
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Minimum yield strength hub
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Rph
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MPa
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Cc
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Required safety factor
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SF
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Length square head with load
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c
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mm
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Length square head with load
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a
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mm
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Distance of resultant of
pressure
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b
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mm
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SHAFT
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Allowable torsion stress
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τall
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MPa
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Torsion stress
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τ
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MPa
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Safety factor
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S
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Allowable bearing stress
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Pall
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MPa
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Bearing stress
|
Ps
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MPa
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Safety factor
|
S
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HUB
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Allowable bearing stress
|
Pall
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MPa
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Bearing stress
|
Ph
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MPa
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Safety factor
|
S
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