length of path of contact to the circular pitch

length of arc of contact to the circular pitch

length of arc of approach to the circular pitch

length of arc of recess to the circular pitch

(pZ)/(N)

(pN)/(Z)

(p)/(ZN)

(ZN)/(p)

it is subjected to a higher stress than the outer side

it is subjected to a higher cyclic loading than the outer side

it is more stretched than the outer side during the manufacturing process

it has a lower curvature than the outer side

d/4

d/3

d/2

3 d/4

bottom of groove of the pulley

sides of groove of the pulley

sides and bottom of groove of the pulley

anywhere in the groove of the pulley