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Shaft shear stress
Shaft shear stress when horsepower, speed and shaft diameter are known
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Overview
Assumptions
This calculator determines your expected shear stress due to a pure torque in a uniform shaft with no stress risers.
The shaft is experiencing pure torque.
There are no stress risers in the shaft.
Multiply your result by the stress riser value to get your actual shaft shear stress.
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Long
Calculator
Input 3 of 4 variables to solve for the unknown.
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Symbol
Variable
Input
Units
τ
_{s}
Shear Stress
pounds/in²
pounds/in²
feet H2O
inches H2O
inches mercury
pounds/ft²
newton/meter²
pascals
mill bars
atmospheres
bars
standard atmospheres
newton/m²
HP
Horsepower
horsepower
watts
kilowatts
foot-pounds/minute
foot-pounds/second
btu/second
btu/minute
btu/hour
N
Rotational Speed
revolutions/minute
revolutions/seconds
revolutions/hour
radians/second
radians/minute
radians/hour
hertz
cycles/second
cycles/minute
cycles/hours
D
_{S}
Shaft Diameter
inches
millimeters
centimeters
feet
meters