For a Double groove angular contact ball bearing with

dimensions as given below :

Estimate the following :

a$.$ Calculate life of the bearing $($in revolutions$),$ by considering

the acting radial load as $400kg.$

b$.$ The bearing was fixed to a base by using M$10$ shaft with a

tightening torque of $14N-m.$ Estimate the effect of

tightening torque $($axial load$)$ on bearing life.

c$.$ Estimate what is the appropriate tightening torque for the

considered bearing from the view$-$point of bearing life.

d$.$ Estimate the impact load bearing capacity of bearing, in$-$case the bearing assembly drops from a height of $200$mm$.$

$D=24mm$;$d=12mm$

$B=10mm$; angle of contact $-30$ degrees

Dynamic load rating $-7KN$

Static load rating $-3\mathrm{.}8KN$