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A round flange bearing is fastened to the machine frame by means of 4 cap screws. The angle made by central axis of bolt 2 and horizontal is θ. Also the radii of flange and pitch circle are a & b respectively. Given: Sum of squares of distance of bolts from axis of tilt is 2a² +b². Determine the angle θ so that the force in the bolt 1 has maximum value.

A round flange bearing is fastened to the machine frame by means of 4 cap screws. The angle made by central axis of bolt 2 and horizontal is θ. Also the radii of flange and pitch circle are a & b respectively. Given: Sum of squares of distance of bolts from axis of tilt is 2a² +b². Determine the angle θ so that the force in the bolt 1 has maximum value. Correct Answer 180’

n:F₁=2Plx(a-b Cos θ)/4(2a²+b²), hence for force to be max Cosθ=-1 or θ=180’.

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