RKB Basic Load Ratings0 pages
Basic load ratings: definitions
Basic dynamic load rating
“Constant stationary radial load which a rolling bearing
can theoretically endure for a basic rating life of 1*106
revolutions” (ISO 281:2007).
Basic static load rating
“Radial load which corresponds to a calculated contact
stress at the center of the most heavily loaded rolling
element/raceway contact of 4000MPa (for all radial
roller bearings). For this contact stress, under static load,
a total permanent deformation of rolling element and
raceway occurs which is approximately 1*10-4 of the
rolling element diameter” (ISO 76:2006).