Mb08.01 Nm (from bending moment diagram)
The required shaft diameter was determined by employing
the formula.
For rotating shaft d3 ¼ 16
pSs
ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi
KbMb ð Þ2 þ KtMt ð Þ2
rh i
ð4Þ
Where d shaft diameter
Ss 0 allowable stress
kb 0 shock and fatigue factor for bending moment
kt 0 shock and fatigue factor for torsional moment
kb01.5, kt01.0, Mb08.01 Nm, Mt00.208 Nm
Therefore d00.0226 m≡22.6 mm
Hence, a shaft diameter of 25 mm was used