23144-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 23144-CCK-W33 model number is decoded

In SKF catalogue PUB BU/P1 17000, 23144-cck-w33 denotes the tapered-bore version (K suffix, taper 1:12) of the 23100-series spherical roller bearing: dimensioned 220×370×120 mm, it seats on an adapter or withdrawal sleeve rather than directly on a machined journal. Numbering ties the bearing to its envelope: 23144-cck-w33 means spherical-roller type, dimension series 31, 220 mm bore — which is why the 370×120 mm outline swaps dimensionally with other ISO 15 bearings of the same code. Sleeve mounting is why the K execution exists: a plain h9-tolerance shaft is enough because the adapter sleeve supplies the precision seat, and the bearing is removable without pulling over an interference journal — a separate order number from the cylindrical-bore bearing, never a field conversion. With C 1888 kN and C0 2750 kN, the 23144-cck-w33 load check covers radial plus moderate axial in either direction — but below the minimum load the rollers skid, so verify P ≥ 0.01·C0 at the lightest operating point. After drive-up, re-check radial clearance and then swing the outer ring through its self-aligning range: the sphered raceway of the 23144-cck-w33 must still tilt ≈ 0.5–2.5° freely — a joint that binds after sleeve mounting signals excessive drive-up or a cocked sleeve.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 220 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 23100-series series at 220 mm bore (370×120 mm) is the medium-OD wide envelope for heavy continuous duty; it is wider than a 222 bearing in the same OD class, so housing width and spacer stack must be re-checked before substitution.
• Never apply the drive-up or clearance-reduction figures for this 1:12 tapered 23144-cck-w33 to a bearing of the other taper (1:12 vs 1:30); the steeper taper moves far less clearance per nut turn and the targets come from different catalogue tables.
• The 23144-cck-w33 and its cylindrical-bore counterpart 23144-cc-w33 share envelope and load ratings (1888/2750 kN) but are not interchangeable in a housing already fitted for direct shaft mounting — the sleeve changes the assembly stack-up.
• The 23144-cck-w33 shares its ISO 15 envelope across brands, but internal geometry differs — SKF load ratings in this row are 1888/2750 kN; another maker's same-size bearing may rate higher or lower, so do not interchange on envelope alone.
• The 1888/2750 kN ratings are SKF catalogue values for this tapered-bore execution (SKF 23144 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.