7218-BEP 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 7218-BEP model number is decoded

7218 BEP is SKF's 90 mm-bore single-row angular-contact ball bearing in the 7200 series, nominal 40° (B) contact angle, 90×160×30 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. The plain BEP is a basic single bearing: its faces are not ground for universal matching, so defined pairs require the BECBP execution rather than two arbitrary BEP units.. Envelope 90×160×30 mm (3.543×6.299×1.181 in), 35.0 mm radial section height, C 108 kN, C0 96.5 kN, Pu 3.65 kN.reference speed 5,000 r/min (thermal) and limiting speed 4,500 r/min (mechanical), catalogue mass 2300 g. Selection figures for 7218 BEP: the static-to-dynamic ratio C0/C is 0.89, Pu 3.65 kN is about 3 % of C, and catalogue mass works out to roughly 26 g per millimetre of bore. Load balance: C0 96.5 kN against C 108 kN gives a 0.89 ratio, typical of a steep-angle axial-oriented design; Pu 3.65 kN enters the SKF adjusted-life equation rather than the basic rating life. Bore-to-OD planning: OD 160 over bore 90 is a 1.78× step for this size, and the 30 mm width gives a bore/width ratio of 3.00; use these ratios when housing space around the 90 mm shaft is the first constraint. Basic polymer-cage execution: BEP is delivered as an individual open bearing with the 40-degree optimized internals and a glass-fibre PA66 ball-centred cage; it is not ground on the side faces for arbitrary pairing, so a reversing-thrust position should order BECBP for a set rather than mounting two unmatched BEP units.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Assign interference to the rotating ring — roughly k5 on a 90 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.
• 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.
• Do not mix execution classes inside one set: a universally matchable BEP unit is ground for arbitrary pairing, a basic execution is not.
• The steep 40° angle of 7218-BEP 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 7218 BEP as the single basic pa66 execution; the other order numbers of the 7218 size are different products and may carry different ratings — always quote the full designation when purchasing.