23268-CAK-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 23268-CAK-W33 model number is decoded

For sleeve mounting on a 340 mm shaft, SKF order number SKF 23268 CAK/W33 is the 1:12 tapered-bore spherical roller bearing in the 23200-series family (dimension series 32 (medium OD, extra wide)); the cylindrical-bore equivalent is a separate order number, 23268-cak-w33. Reading the designation: the leading 2 marks a spherical roller bearing, the 32 is the ISO 15 dimension series (dimension series 32 (medium OD, extra wide)), and the last two digits encode the 340 mm bore; the 620 mm OD and 224 mm width follow the ISO 15 general plan. 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 550 kN Pu figure feeds the adjusted-life equation at contaminated or partial-film conditions, and the 1.45 C0/C balance shows this execution is tuned to heavy radial-plus-axial duty with misalignment tolerance. Mounting on the 1:12 taper is controlled by clearance reduction or measured axial drive-up, never by locknut torque: SKF tables give the target radial-clearance decrease for the 340 mm 23268-cak-w33, checked with feeler gauges before and after drive-up.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 340 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 340 mm bore (620×224 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 224 mm width changes abutment spacing, even though the 620 mm OD matches.
• A loose sleeve after the first weeks of service usually means inadequate initial drive-up; re-checking clearance without dismounting is possible through the 224 mm-wide roller rows with feeler gauges — do not simply tighten the KM nut until vibration stops.
• Never apply the drive-up or clearance-reduction figures for this 1:12 tapered 23268-cak-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.
• Catalogue reference speed and limiting speed are different limits: the 560 r/min reference is a thermal criterion under load, while the 800 r/min limiting value is the mechanical ceiling — observe both.
• The 5362/7800 kN ratings are SKF catalogue values for this tapered-bore execution (SKF 23268 CAK/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.