7260-BCBM bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-27

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.

Cross references & equivalents

Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the 7260-BCBM model number is decoded

7260 BCBM is SKF's 300 mm-bore single-row angular-contact ball bearing in the 7200 series, nominal 40° (B) contact angle, 300×540×85 mm to the ISO dimension plan. 40° contact angle (suffix B): the steep standard single-row angle, giving the highest axial capacity at the cost of speed, with a recommended load ratio Fa/Fr ≥ 1. machined brass cage, ball-centred (suffix M), the choice for high speed, marginal lubrication and shock duty. CB means universally matchable with Normal axial internal clearance: the two side faces are ground so any two units form DB (back-to-back), DF (face-to-face) or DT (tandem) sets without regrinding. Envelope 300×540×85 mm (11.811×21.26×3.346 in), 120.0 mm radial section height, C 553 kN, C0 930 kN, Pu 19.3 kN.reference speed 1,300 r/min (thermal) and limiting speed 1,300 r/min (mechanical), which coincide for this size, catalogue mass 85000 g. Load balance: C0 930 kN against C 553 kN gives a 1.68 ratio, typical of a steep-angle axial-oriented design; Pu 19.3 kN enters the SKF adjusted-life equation rather than the basic rating life. Sizing arithmetic on the 300 mm bore: 553 kN C divided by the 120.0 mm radial section height gives 4.6 kN per section millimetre; the 85000 g mass and 3 % Pu/C share frame the light-load floor for the adjusted-life check. Bore-to-OD planning: OD 540 over bore 300 is a 1.80× step for this size, and the 85 mm width gives a bore/width ratio of 3.53; use these ratios when housing space around the 300 mm shaft is the first constraint. Non-optimized universal execution: BCBM keeps the earlier internal geometry (no E) with CB Normal-clearance set mounting and a machined brass ball-centred cage; it is stocked for positions built around its established ratings rather than the enhanced E ball complement.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Assign interference to the rotating ring — roughly m6 on a 300 mm rotating shaft with an H7 housing — and let the stationary ring slide for axial setting; reverse the logic if the outer ring rotates.
• Preload the set against a calculated stand-off dimension — the ground faces of BCBM establish it, but locknut torque, sleeve crush and housing-face squareness each consume part of the allowance.
• Do not mix execution classes inside one set: a universally matchable BCBM unit is ground for arbitrary pairing, a basic execution is not.
• At 300 mm bore the m6 seat assumes a steel shaft and housing; aluminium housings grow faster with temperature, so re-check the outer-ring setting when the case is non-ferrous.
• The steep 40° angle of 7260-BCBM favours thrust-heavy combined loads; for a predominantly radial high-speed position the 25° ACCBM execution of the same size is the alternative order number.
• Universally matchable BCBM bearings arrive ready for set mounting, not preloaded sets: preload results from how the set is clamped, so follow the SKF stand-off-ring and nut-torque procedure.