# Bearing L10 rating life
# Scope: Basic L10 ball-bearing life; no reliability or contamination modifiers.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

rating = 5000 N
load = 500 N
speed = 1500 rpm

millionRevolutions := (rating/load)^3
period := 2*pi/speed [s]
revolutionRate := 1/period [s^-1]
life := millionRevolutions*1000000/revolutionRate [h]

check life target: life >= 5000 h

scenario alternative: rating = 4000 N