7310-BECBP 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 7310-BECBP model number is decoded

7310 BECBP is SKF's 50 mm-bore single-row angular-contact ball bearing in the 7300 series, nominal 40° (B) contact angle, 50×110×27 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. E marks the optimized internal design with an enhanced ball complement and race geometry. glass-fibre reinforced PA66 cage, ball-centred (suffix P), with a 120 °C continuous-temperature ceiling. 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 50×110×27 mm (1.969×4.331×1.063 in), 30.0 mm radial section height, C 75 kN, C0 51 kN, Pu 2.16 kN.reference speed 7,500 r/min (thermal) and limiting speed 8,000 r/min (mechanical), catalogue mass 1100 g. Sizing arithmetic on the 50 mm bore: 75 kN C divided by the 30.0 mm radial section height gives 2.5 kN per section millimetre; the 1100 g mass and 3 % Pu/C share frame the light-load floor for the adjusted-life check. Mass and section check: 1100 g inside the 50×110×27 mm outline leaves a 30.0 mm radial section, and the 51 kN static rating is 0.68× the dynamic rating — plan static safety and minimum load against those numbers rather than against sister executions. Bore-to-OD planning: OD 110 over bore 50 is a 2.20× step for this size, and the 27 mm width gives a bore/width ratio of 1.85; use these ratios when housing space around the 50 mm shaft is the first constraint. Universal polymer-cage execution: BECBP is the factory-ground set-mounting version of the basic BEP — both side faces are finish-ground to a controlled stand-off so two units form DB, DF or DT arrangements without shims, while the glass-fibre PA66 ball-centred cage keeps the light, quiet running typical of the P-cage range; CB delivers Normal axial clearance before preload is applied at assembly.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Assign interference to the rotating ring — roughly k5 on a 50 mm rotating shaft with an H7 housing — and let the stationary ring slide for axial setting; reverse the logic if the outer ring rotates.
• Fillet radii must clear the chamfer so the 27 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
• Preload the set against a calculated stand-off dimension — the ground faces of BECBP establish it, but locknut torque, sleeve crush and housing-face squareness each consume part of the allowance.
• Preload the set against a calculated stand-off dimension — the ground faces of BECBP establish it, but locknut torque, sleeve crush and housing-face squareness each consume part of the allowance.
• The steep 40° angle of 7310-BECBP 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 BECBP 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.