L10 life of a bearing

[solidworkswell]

is there anyway i can take into consideration manufacturing defects into calculating L10 life of a bearing.

do any one know if there is any tabulated values of frictional losses in gear mesh. i hope i am not sounding stupid when i am asking this.

 

[diamondjim]

Can you be more specific about what kind
of manufacturing errors? If the bearing
is preloaded it will only magnify the
effects of the errors.

You will have approx 3 percent loss max
in each gear mesh situation. Depends on
the lube and also the face width of the
gears in mesh. This assumes standard
involute spur type gearing.