Paired Spindle Bearings

{"O-Arrangement (DB)":"The contact lines form an O. The O-arrangement is characterized by a wide support base and high rigidity against tilting moments. The axial force is absorbed in both directions.\n\nX-Arrangement (DF): The pressure lines form an X. This bearing arrangement is less sensitive to alignment errors than the O-arrangement, but has lower tilting stiffness. The axial force is absorbed in both directions.\n\nTandem Arrangement (DT): In this bearing arrangement, the contact lines are arranged in parallel. The axial load capacity is twice that of a single bearing, but only in one direction. Therefore, this bearing pair must be positioned against another bearing or bearing pair.\n\nUniversal Design (U): Universal bearings can be paired in any arrangement as specified above. It must be taken into account that the bearings require the same preload."}