7312-BECBY 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 7312-BECBY model number is decoded

7312 BECBY is SKF's 60 mm-bore single-row angular-contact ball bearing in the 7300 series, nominal 40° (B) contact angle, 60×130×31 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. stamped brass cage, ball-centred (suffix Y) — lighter than the machined M cage but brass rather than polymer. 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. BECBY combines the optimized 40° geometry with CB universal clearance and a stamped brass Y cage. Envelope 60×130×31 mm (2.362×5.118×1.22 in), 35.0 mm radial section height, C 104 kN, C0 76.5 kN, Pu 3.2 kN.reference speed 6,300 r/min (thermal) and limiting speed 6,700 r/min (mechanical), catalogue mass 1750 g. The 3.2 kN fatigue load limit is the equivalent-load floor for long-life adjustment; with 104/76.5 kN ratings and 1750 g mass this execution carries about 1.73 kN of C per millimetre of bore. Sizing arithmetic on the 60 mm bore: 104 kN C divided by the 35.0 mm radial section height gives 3.0 kN per section millimetre; the 1750 g mass and 3 % Pu/C share frame the light-load floor for the adjusted-life check. Speed-ratio note for this exact unit: the reference speed is 6,300 r/min against a 6,700 r/min limiting speed, i.e. a reference-to-limit ratio of 0.94. Cage detail specific to this order number: the Y cage is stamped from brass strip into ball pockets rather than machined from solid, giving a lighter cage assembly and lower centrifugal mass than the M execution; it remains brass (temperature and oil-additive tolerant, unlike PA66) but is the formed-cage design, and the machined-brass BECBM order number remains the choice for severe shock or marginal lubrication.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Preload the set against a calculated stand-off dimension — the ground faces of BECBY establish it, but locknut torque, sleeve crush and housing-face squareness each consume part of the allowance.
• One 7312-BECBY locates the shaft in one axial direction only; reversing-thrust positions need a DB or DF pair — or a double-row bearing — with preload set from the load diagram, never from assembly feel.
• Do not mix execution classes inside one set: a universally matchable BECBY unit is ground for arbitrary pairing, a basic execution is not.
• Fillet radii must clear the chamfer so the 31 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
• The steep 40° angle of 7312-BECBY 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 BECBY 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.