The frictional heating in sliding bearings
equals Q=μFV. The load capacity
of sliding bearings is expressed in the PVvalue,
i.e. the product of the average contact pressure F/(LD)
and the sliding velocity V=πDn/60
in which n the
rotational speed in [rpm].
The PVvalue relates to frictional heating
per unit of surface area, i.e. μPV=Q/(LD)
and is limited by the maximum contact temperature.
So, the Limiting PVvalue also depends on
heat dissipation (calculator for LPV value). 
