feather key
gib-head key
wood ruff key
flat saddle key
10 Degree-20 Degree
30 Degree-40 Degree
40 Degree-60 Degree
60 Degree-80 Degree
brittle materials
ductile materials
brittle as well as ductile materials
elastic materials
zero at the centroidal axis
zero at the point other than centroidal axis
maximum at the neutral axis
none of these
needle roller bearings
tapered rolierbearings
spherical roller bearings
cylindrical roller bearings