7312-ACCBM 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-ACCBM model number is decoded

7312 ACCBM is SKF's 60 mm-bore single-row angular-contact ball bearing in the 7300 series, nominal 25° (AC) contact angle, 60×130×31 mm to the ISO dimension plan. AC sets the 25° contact angle, CB marks universal matching with Normal axial clearance, and M the machined brass ball-centred cage. 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. 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 60×130×31 mm (2.362×5.118×1.22 in), 35.0 mm radial section height, C 116 kN, C0 85 kN, Pu 3.6 kN.reference speed 7,000 r/min (thermal) and limiting speed 10,000 r/min (mechanical), catalogue mass 1750 g. At the printed limiting speed of 10,000 r/min the mean pitch diameter dm ≈ 95.0 mm implies a dn value around 950k mm·r/min; the 7,000 r/min reference speed is the thermal-planning figure under catalogue load. Envelope economics: the 31 mm width over a 35.0 mm section yields 0.89 mm of ring width per section millimetre, and the bearing weighs 1750 g for 116 kN of dynamic capacity — about 15 g per rated kN. Bore-to-OD planning: OD 130 over bore 60 is a 2.17× step for this size, and the 31 mm width gives a bore/width ratio of 1.94; use these ratios when housing space around the 60 mm shaft is the first constraint. High-angle alternative note: ACCBM carries the 25-degree AC contact angle (not the 40-degree B), CB Normal-clearance universal faces and a machined brass cage; it runs faster and cooler than a BECBM of the same envelope but accepts a smaller axial share, so substitute only after re-running the load-ratio check.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Preload the set against a calculated stand-off dimension — the ground faces of ACCBM establish it, but locknut torque, sleeve crush and housing-face squareness each consume part of the allowance.
• DB pairs give the highest moment stiffness, DF pairs tolerate misalignment and thermal expansion better, DT shares heavy one-direction thrust; choose from the shaft thermal calculation rather than by habit.
• Keep the load ratio in the SKF design range: Fa/Fr ≥ 0,55 for this angle; below it the balls unload the contact ellipse and skid, which is why the catalogue insists on a minimum axial load (Fam ≈ A·(n·dm/1000)²) at high speed.
• Greased positions should fill roughly 25–35 % of the free volume on a 7312-ACCBM of this section and route the surplus past the outer ring; overpacking churns the grease and reproduces the thermal preload problem mechanically.
• The 25° AC angle of 7312-ACCBM runs faster and cooler than a 40° B bearing of the same envelope, but its thrust capacity and induced-load behaviour differ — do not swap AC for B without re-running the axial-load calculation.
• Universally matchable ACCBM 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.