24180-ECAK30-W33 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.3 withdrawal-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. 9.3 withdrawal-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 24180-ECAK30-W33 model number is decoded

The SKF 24180 ECAK30/W33 is a 400×650×250 mm spherical roller bearing with a 1:30 tapered bore — SKF catalogue execution for sleeve mounting on a 400 mm plain shaft, retaining the double-row self-aligning barrel-roller design. Numbering ties the bearing to its envelope: 24180-ecak30-w33 means spherical-roller type, dimension series 41, 400 mm bore — which is why the 650×250 mm outline swaps dimensionally with other ISO 15 bearings of the same code. Sleeve mounting is why the K30 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 6331 kN and C0 10600 kN, the 24180-ecak30-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. At 400 mm bore, dismount after service is by KM locknut reversal or a hydraulic nut on larger sizes; oil-injection grooves on the bigger sleeves let pressurised oil float the 24180-ecak30-w33 off the taper without scoring either surface.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• At 400 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 24100-series series at 400 mm bore (650×250 mm) is the heaviest medium-OD execution, built for extreme radial and shock loads at low speed; the 500 r/min ceiling is part of the design, not an afterthought — check it before using it in a faster drive.
• The 24180-ecak30-w33 and its cylindrical-bore counterpart 24180-ecak30-w33 share envelope and load ratings (6331/10600 kN) but are not interchangeable in a housing already fitted for direct shaft mounting — the sleeve changes the assembly stack-up.
• A loose sleeve after the first weeks of service usually means inadequate initial drive-up; re-checking clearance without dismounting is possible through the 250 mm-wide roller rows with feeler gauges — do not simply tighten the KM nut until vibration stops.
• Shaft and housing fillets must clear the bearing chamfer so the 250 mm-wide rings seat square; use an undercut or withdrawal groove rather than an oversized radius that locks on the ring face.
• The 6331/10600 kN ratings are SKF catalogue values for this tapered-bore execution (SKF 24180 ECAK30/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.