Angular contact ball bearings carry combined radial and axial loads; the contact angle (B = 40°, AC = 25°, C/CD = 15° on super-precision types) sets the axial capacity. Single-row bearings (series 72, 73 and the narrow 70) are normally fitted in pairs — back-to-back (DB), face-to-face (DF) or tandem (DT) — and universally matchable bearings carry the GA/GB suffix. Double-row types (series 32 and 33, e.g. 3205 A-2RS1) replace a matched pair in one width; four-point contact bearings QJ take axial load in both directions. Super-precision series 718, 719, 70 and 72 with P4/P4A tolerance serve machine-tool spindles. Bore is coded as usual (7205 = bore 25 mm, 71810 = bore 50 mm). The finder lists the catalogue by bore with one column per series.
Replace paired bearings as a set and mount them in the original arrangement; mixing a new bearing with a used one destroys the preload. For spindles specify the preload class (A, B, C) and lubrication (grease-filled or oil). 2RS1/2Z sealed double-row bearings are lubricated for life and cannot be relubricated.
Coverage: 7,160 catalogue rows with a readable rating, of 7,168 in these categories. Each cell lists up to 8 part numbers per column; click a part number for the product page and a quotation.
Part numbers and designations are those of the original manufacturers and are given for identification. cBallast is an independent supplier; confirm ratings against the nameplate of the installed equipment before ordering. Table generated from the cBallast catalogue on 2026-09-29.