7326-BM 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 7326-BM model number is decoded

7326 BM is SKF's 130 mm-bore single-row angular-contact ball bearing in the 7300 series, nominal 40° (B) contact angle, 130×280×58 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. The BM is the non-optimized basic 40° execution with a machined brass cage; it predates the E geometry and is stocked for positions built around its specific figures.. Envelope 130×280×58 mm (5.118×11.024×2.283 in), 75.0 mm radial section height, C 276 kN, C0 305 kN, Pu 9 kN.reference speed 2,800 r/min (thermal) and limiting speed 3,400 r/min (mechanical), catalogue mass 17000 g. Mass and section check: 17000 g inside the 130×280×58 mm outline leaves a 75.0 mm radial section, and the 305 kN static rating is 1.11× the dynamic rating — plan static safety and minimum load against those numbers rather than against sister executions. At the printed limiting speed of 3,400 r/min the mean pitch diameter dm ≈ 205.0 mm implies a dn value around 697k mm·r/min; the 2,800 r/min reference speed is the thermal-planning figure under catalogue load. Bore-to-OD planning: OD 280 over bore 130 is a 2.15× step for this size, and the 58 mm width gives a bore/width ratio of 2.24; use these ratios when housing space around the 130 mm shaft is the first constraint. Non-optimized basic execution: BM is the earlier 40-degree design without the E internal upgrade, fitted with a machined brass ball-centred cage as a single (non-universal) bearing; quote it for housings and spacers designed around the legacy geometry.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Keep the load ratio in the SKF design range: Fa/Fr ≥ 1 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.
• Assign interference to the rotating ring — roughly m6 on a 130 mm rotating shaft with an H7 housing — and let the stationary ring slide for axial setting; reverse the logic if the outer ring rotates.
• 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.
• Assign interference to the rotating ring — roughly m6 on a 130 mm rotating shaft with an H7 housing — and let the stationary ring slide for axial setting; reverse the logic if the outer ring rotates.
• The steep 40° angle of 7326-BM 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.
• Catalogue ratings are SKF PUB BU/P1 17000 figures for 7326 BM as the single non e brass execution; the other order numbers of the 7326 size are different products and may carry different ratings — always quote the full designation when purchasing.