23228-CCK-W33 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.2 adapter-sleeve executions) · extracted 2026-09-26

Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.2 adapter-sleeve executions); 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 23228-CCK-W33 model number is decoded

The SKF 23228 CCK/W33 is a 140×250×88 mm spherical roller bearing with a 1:12 tapered bore — SKF catalogue execution for sleeve mounting on a 140 mm plain shaft, retaining the double-row self-aligning barrel-roller design. The code breaks down as type digit 2 (double-row spherical roller), dimension series 32 (dimension series 32 (medium OD, extra wide)), and bore code 28 = 140 mm; dimensions 140×250×88 mm therefore match the ISO 15 envelope. Note that K means 1:12 taper; the rarer K30 suffix means 1:30. Adapter sleeves (H) and withdrawal sleeves (AH) are ordered separately by shaft diameter, and the KM locknut plus MB lock washer used for drive-up are also separate components. The 120 kN Pu figure feeds the adjusted-life equation at contaminated or partial-film conditions, and the 1.30 C0/C balance shows this execution is tuned to heavy radial-plus-axial duty with misalignment tolerance. On an H adapter sleeve the 140 mm shaft seat only needs an h9 plain journal; slide the sleeve into the 23228-cck-w33 inner ring, tighten the KM nut against the MB washer until the catalogue clearance-reduction value is reached, then lock the washer tab.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 140 mm bore the ring mass makes cocking during mounting a real risk; guide the bearing square, confirm seat contact around the full circumference, and re-check the self-aligning swing after the housing cap is torqued down.
• The 23200-series series at 140 mm bore (250×88 mm) adds still more width for shock-loaded and vibratory loads; it does not interchange with a 231 bearing of the same bore because the 88 mm width changes abutment spacing, even though the 250 mm OD matches.
• The 23228-cck-w33 and its cylindrical-bore counterpart 23228-cc-w33 share envelope and load ratings (962/1250 kN) but are not interchangeable in a housing already fitted for direct shaft mounting — the sleeve changes the assembly stack-up.
• The adapter sleeve is selected by actual shaft diameter, not by the 140 mm nominal bearing bore: H-sleeve part numbers span a small diameter range, so two different shaft diameters can use the same 23228-cck-w33 with different sleeves.
• Open spherical roller bearings rely on the housing seals; in screening or crusher duty a failed seal lets grit into the sphered raceway and the 23228-cck-w33 pits long before its L10 life.
• The 962/1250 kN ratings are SKF catalogue values for this tapered-bore execution (SKF 23228 CCK/W33); sleeve, KM nut and MB washer are separate order numbers, and the catalogue version (SKF catalogue PUB BU/P1 17000) should travel with the mounting specification.