Joint bearing a rotating inner ring and outer ring raceway surface, due to the rolling elements are rolling contact, thus running track for the dark side, running track at the Raceway surface, does not fall within the exception, which can be seen loading conditions, so in case of removing SKF bearings, please pay strict attention to and observe the movements of Raceway surface. If you look closely at the track, you will learn that bear radial loads, bear large axial load, tolerance torque loads, uneven or has an extremely rigid on the bearing box.
(1) due to the Groove and pull trough the lubricating oil film thin or damaged, causing local wear of bearings;
(2) due to axis deflection, load unbalanced load, when installed between bearing steel and bearing bore has hard spots and grease, shaft or stiffness caused enough friction bearing abnormal wear of the bearing;
(3) entering the FAG bearings faces, when foreign bodies than the minimum oil film thickness, damage film, leading to wear;
(4) due to insufficient lubricating oil supply caused by too little fuel, oil pressure is too low or is broken, cannot establish normal oil film, shaft and bearing metal caused by direct contact causes wear or heat;
(5) due to improper Assembly, spherical plain bearing and the bearing seat interference fit is poor, bearing cap wrong, hole position deviation, shaft and bearing centerline deviation, resulting in loose bearings, NSK bearings and bearing bore of fretting contact or incomplete, bearing wear or even caused by surface spalling;
(6) Bush poor degree of interference. No interference between bearing steel and bearing relative movement, causing steel lateral surface and wear; interference Ambassador articulation bearing inner-hole narrow and difficult to form oil film, resulting in premature wear and even death.