# Bearing friction and heat
# Scope: Supplied effective friction coefficient; no seal or lubricant model.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

load = 500 N
diameter = 20 mm
coefficient = 0.002
speed = 1500 rpm

torque := coefficient*load*diameter/2 [N*m]
loss := torque*speed [W]

check loss budget: loss <= 5 W

scenario alternative: load = 400 N