00000AU411121903

Design a single deep groove ball bearing as per the specifications: radial load (15)
=4000 N and axial load =5000 N, speed =1600rpm and average life 3000 hours.
PART C

Answer any two full questions, each carries 20 marks.
An automotive type internal expanding shoe is shown in the diagram. The face (20)
width of the friction lining is 60mm and the coefficient of fiction is 0.35.the
maximum intensity of pressure 15 limited to 1.2 N/nm?.Assume angle 0-0.
Calculate
(1) the actuating force ‘F’
(2) The torque capacity of the brake

A pair of helical gear is required to transmit 15kW at 2000rpm. The output shaft (20)
is running at 500൬൩. The helix angle is 30: Design the pair of gears.
A pair of spur gear is required to transmit 101277 power. The input shaft rotates (20)

at 576rpm and the output shaft rotates at 144rpm. Design the spur gear.

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