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Shaft Diameter - Hollow

Size the outside diameter of a hollow circular shaft from torque, inner diameter and allowable stress.

Transmitted torque: 500 N·m
Live concept view — geometry scales with the entered design condition.

Design inputs

Enter known values using the units shown. Results and the live SVG view update immediately.

PRELIMINARY RESULT

Required outside diameter42.31 mm
Inner diameter
30.00 mm

Calculation detail

Formula: T = (π/16)τ((Do⁴ - Di⁴) / Do)

Outside diameter is solved numerically from the hollow-shaft torsion equation.