Question

A shaft carries a pulley 'A' at the left end and a spur gear 'B' at middle

of bearing supports C and D. The pulley is 1000 mm in diameter and

gear

pitch

dia is

600

mm.

The pulley

is

keyed

to the

shaft at

400 mm to

the left

of the

left

hand

bearing

and

the

distance

between

bearings

C

and D is 1250 mm. The shaft transmits 20 kW and runs at 750 rpm.

The shaft receives power from a motor placed vertically below the

pulley through a flat belt with ratio of tensions 2.5. The shaft delivers

power to a gear placed horizontally in front. The shaft rotates in

anticlockwise direction looking from left. Pressure angle of gear is 20

degrees. Design the shaft if the weight of A and B are 300 N and 250

N respectively. The allowable shear stress of the shaft material is 70

N/mm2.Shock and fatigue factor in bending and torsion are 2.0 and 1.5

respectively​

Answer 1

Answer:

why don't you ask for help

Explanation:

It's not that hard