Duplex bearings are a pair of angular contact RBC Thin Section Ball Bearings Back-to-Back (DB) B-Type; Face-to-Face (DF) F-Type; Tandem (DT), T-Type.
available for the fixed end of spindles are usually 2 rows (DB), 3 rows (DBD), and combinations, since the preload distribution to each bearing is not equal, the
NHBB's preloaded duplex bearings include back-to-back (DB), face-to-face (DF) and tandem (DT) types. Preload helps control an application's operating
Usually, the cages for angular contact ball bearings with a contact angle . (DB). (Example). 7208 A DB. Radial loads and axial loads in both directions.