Cylindrical roller bearings employ ‌line contact‌ between cylindrical rollers and raceways to deliver ‌ultra-high radial load capacity‌ with minimal friction.
AXK: Needle roller and cage thrust assembly, the number following identifies the bore and outside diameter

AS: Thin universal washer, the number following identifies the bore and outside diameter

Axial needle roller and cage assemblies AXK comprise geometrically stable plastic or metal cages fitted with a large number of needle rollers. Due to the high uniformity of diameter (the needle rollers are sorted to very small diameter tolerances) of the needle rollers with each other, this gives very uniform loading of the rolling elements. Since the axial section height of the cage assemblies is determined purely by the needle roller diameter, the bearings require only an extremely small axial design space.

Axial bearing washers AS are suitable for axial needle roller and cage assemblies AXK. They are punched, through hardened, polished and suitable for use as shaft or housing locating washers. They are used if the adjacent machine parts cannot be used as a raceway for the rolling elements but are sufficiently rigid and geometrically precise.
Their rigid design accommodates shaft expansion but supports minimal axial loads, suited for precision machinery like motors and machine tools.