7218-BECBP 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-BECBP model number is decoded

7218 BECBP 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. 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 90×160×30 mm (3.543×6.299×1.181 in), 35.0 mm radial section height, C 116 kN, C0 104 kN, Pu 4 kN.reference speed 5,000 r/min (thermal) and limiting speed 5,000 r/min (mechanical), which coincide for this size, catalogue mass 2300 g. Envelope economics: the 30 mm width over a 35.0 mm section yields 0.86 mm of ring width per section millimetre, and the bearing weighs 2300 g for 116 kN of dynamic capacity — about 20 g per rated kN. Speed planning distinguishes the two published ceilings mechanically: the cage and balls tolerate 5,000 r/min while thermal balance under catalogue load sets the 5,000 r/min reference; at dm ≈ 125.0 mm the corresponding dn is approximately 625k mm·r/min. 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. Universal polymer-cage execution: BECBP is the factory-ground set-mounting version of the basic BEP — both side faces are finish-ground to a controlled stand-off so two units form DB, DF or DT arrangements without shims, while the glass-fibre PA66 ball-centred cage keeps the light, quiet running typical of the P-cage range; CB delivers Normal axial clearance before preload is applied at assembly.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Do not mix execution classes inside one set: a universally matchable BECBP unit is ground for arbitrary pairing, a basic execution is not.
• Do not mix execution classes inside one set: a universally matchable BECBP unit is ground for arbitrary pairing, a basic execution is not.
• Preload the set against a calculated stand-off dimension — the ground faces of BECBP 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 30 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
• The steep 40° angle of 7218-BECBP 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 BECBP 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.