A lathe receives power from an overhung shaft situated exactly
above the lathe pulley by meance of the belt drive. A pulley
weighing 400 N and of diameter 270 mm is fixed on the shaft
at a distance of 300 mm to the right of the left hand bearing.
The centre to centre distance between the two shaft supporting
bearing is 900 mm. The maximum power required by machine
is 5 kW at 200 rpm. The belt tension ratio is 2.5. Determine
the diameter of shaft.
Allowable shear stress for shaft material is 40 N/mm2.
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