F12-060 Parker Axial piston fixed High pressure pump Hydraulic Open circuit pumps

Bearing life General information Bearing life can be calculated for that part of the load/life curve (shown below) that is designated 'Bearing fatigue'. 'Rotating group fatigue and wear' and 'Other' caused by material fatigue, fluid contamination, etc. should also be taken into consideration when estimating the service life of a motor/pump in a specific application. Bearing life calculations are mainly used when comparing different frame sizes. Bearing life, designated B10 (or L10), is dependent of system pressure, operating speed, external shaft loads, fluid viscosity in the case, and fluid contamination level. The B10 value means that 90 % of the bearings survive, at a minimum, the number of hours calculated. Statistically, 50 % of the bearings will survive at least five times the B10 life.