7226-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 7226-BM model number is decoded

7226 BM is SKF's 130 mm-bore single-row angular-contact ball bearing in the 7200 series, nominal 40° (B) contact angle, 130×230×40 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 130×230×40 mm (5.118×9.055×1.575 in), 50.0 mm radial section height, C 186 kN, C0 193 kN, Pu 6.1 kN.reference speed 3,400 r/min (thermal) and limiting speed 3,800 r/min (mechanical), catalogue mass 6950 g. Envelope economics: the 40 mm width over a 50.0 mm section yields 0.80 mm of ring width per section millimetre, and the bearing weighs 6950 g for 186 kN of dynamic capacity — about 37 g per rated kN. Selection figures for 7226 BM: the static-to-dynamic ratio C0/C is 1.04, Pu 6.1 kN is about 3 % of C, and catalogue mass works out to roughly 53 g per millimetre of bore. Bore-to-OD planning: OD 230 over bore 130 is a 1.77× step for this size, and the 40 mm width gives a bore/width ratio of 3.25; 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.
• Preload the set against a calculated stand-off dimension — the ground faces of BM establish it, but locknut torque, sleeve crush and housing-face squareness each consume part of the allowance.
• Fillet radii must clear the chamfer so the 40 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 BM establish it, but locknut torque, sleeve crush and housing-face squareness each consume part of the allowance.
• The steep 40° angle of 7226-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 7226 BM as the single non e brass execution; the other order numbers of the 7226 size are different products and may carry different ratings — always quote the full designation when purchasing.