FAG 234408-M-SP Schrägkugellager (40x68x36)

As an axial angular contact ball bearing, this bearing carries high axial loads at elevated speeds, e.g. for ball screws. At 40x68x36 mm and a unit weight of 0.57 kg, the installation envelope is fixed; further technical details are held in the specification table. Supplied without an integrated seal, this bearing in standard bearing steel combines low frictional torque with high axial stiffness.

In the axial angular contact ball bearing the ball raceways sit at a contact angle to the bearing axis; the load line therefore runs at an angle, which yields high longitudinal forces at a higher permissible speed and greater axial stiffness than a flat thrust set. The design is normally run preloaded — often as an adjusted pair or set — because only the preload removes axial play and establishes the stiffness that feed axes and ball screws demand.

The open version has no seal of its own; lubricant supply, sealing and relubrication are handled by the surrounding construction, which eases relubrication intervals and installation in enclosed housings. Without seal friction the frictional torque stays low, so the power loss follows essentially from the preload and the quantity of lubricant.

Standard bearing steel is through-hardened and covers the usual operating-temperature range; for the design, axial force, preload, speed and the required stiffness should be assessed together. Solid brass cage — Dimensional/form-fit equivalent — verify suffix-level details for critical applications. Matching suffixes are also listed by SKF (M, MA, MB), NSK (M) and NTN (L1, G1, M).