24168 bearing: complete specifications & equivalents
The 24168 is a ISO 15 radial bearing sized 340 x 580 x 243 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 340 mm |
| Outer diameter D | 580 mm |
| Width B | 243 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 5487 kN |
| Basic static load rating C0 | 8650 kN |
| Fatigue load limit Pu | 630 kN |
| Reference speed (thermal) | 430 rpm |
| Limiting speed (mechanical) | 630 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 280000 g |
| Manufacturer designation | SKF 24168 ECCJ/W33 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.1 spherical roller bearings |
| Last verified | 2026-09-26 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.1 spherical roller bearings) · extracted 2026-09-26
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.1 spherical roller bearings); 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.
Dimensions in inches & 24100-series range
| Bore d | 13.386 in |
|---|---|
| Outer diameter D | 22.835 in |
| Width B | 9.567 in |
| ISO bore code | 68 |
| Radial section height (D−d)/2 | 120 mm |
| Smallest bore in 24100-series | 100 mm |
| Largest outer diameter in 24100-series | 790 mm |
| Width range across 24100-series | 65–308 mm |
| Bore position in 24100-series (smallest first) | 18 of 25 |
| Bore above smallest 24100-series size | 240 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 24168 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; D/B cross-verified against Schaeffler HR1 2022; brand-specific OEM equivalents (NSK/FAG/NTN) pending multi-source data. |
| 24168-ECCK30J-W33 | SKF | full Dimensions and internal design equivalent — standard interchange. | Tapered-bore (1:30) execution on AOH24168 withdrawal sleeve; same ISO 15 envelope, separate order number. |
| C4168-K30MB | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF CARB toroidal bearing C 4168 K30MB shares the 340×580×243 mm envelope with ratings within 10 %; it self-aligns but floats axially and cannot locate the shaft — locating/non-locating pair, not a substitute. |
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 24168 model number is decoded
The 24168 ECCJ/W33 is a 340×580×243 mm spherical roller bearing — the dimension series 41 (medium OD, maximum width) entry for a 340 mm shaft, with two rows of symmetrical barrel rollers for combined radial and axial load. Numbering ties the bearing to its envelope: 24168 means spherical-roller type, dimension series 41, 340 mm bore — which is why the 580×243 mm outline swaps dimensionally with other ISO 15 bearings of the same code. CJ/ECCJ bearings here run a stamped steel window cage rather than the older two-cage CC arrangement; quote the full ECCJ/W33 designation when ordering, and do not assume the K tapered-bore execution is a field conversion. Catalogue mass 280000 g for the 340×580×243 mm open execution covers the a stamped sheet-steel window-type cage with low-friction guidance (CJ design); tapered-bore and sealed variants differ in mass and carry their own order numbers. A 340 mm rotating inner ring usually runs m6 on the shaft with H7 in the housing; for vibrating-screen duty the outer ring is instead held tight and the shaft seat loosened — follow the screen builder's fit schedule.
Typical equipment & failure modes
Common applications
- large dredger and marine winch drums
- steel-plant continuous-caster segments
- large induced-draft fan rotors
- SAG and ball-mill drive shafts
Known failure patterns
- raceway fatigue spalling of the sphered outer raceway after extended service above the catalogue L10 rating
- inner-ring raceway spalling from edge loading when misalignment exceeds the self-aligning recovery range
- cage pocket wear or fracture from roller skew at insufficient minimum load or rapid acceleration
- roller-end scoring from starved lubricant at start-up before the grease channel purges
- fretting corrosion on a loose rotating shaft seat or in vibratory stand-still
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 24100-series series at 340 mm bore (580×243 mm) is the heaviest medium-OD execution, built for extreme radial and shock loads at low speed; the 630 r/min ceiling is part of the design, not an afterthought — check it before using it in a faster drive.
- Shaft and housing fillets must clear the bearing chamfer so the 243 mm-wide rings seat square; use an undercut or withdrawal groove rather than an oversized radius that locks on the ring face.
- 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 24168 pits long before its L10 life.
- The 5487/8650 kN ratings are SKF catalogue values for this exact execution (24168 ECCJ/W33); SKF can revise internal geometry without changing the order number, so keep the catalogue version (SKF catalogue PUB BU/P1 17000) with the specification and re-verify for critical drives.
- SKF lists several executions of 24168 (cylindrical bore as listed, tapered-bore 24168 CCK30/W33 variant, plus sealed and vibrating-screen options in the same envelope); they are not interchangeable order numbers — quote the full 24168 ECCJ/W33 designation when purchasing.
Frequently asked questions
What are the dimensions and catalogue data of 24168?
The 24168 ECCJ/W33 is a double-row spherical roller bearing with 340 mm bore, 580 mm outer diameter and 243 mm width (13.386 × 22.835 × 9.567 in) per ISO 15. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 5487 kN, C0 8650 kN, fatigue load limit Pu 630 kN, reference speed 430 r/min, limiting speed 630 r/min, mass about 280000 g. It is an open, self-aligning bearing with a stamped sheet-steel window-type cage with low-friction guidance (CJ design).
How does the 24168 bore code work?
The last two digits of 24168 are bore code 68, so 68 × 5 = 340 mm bore. The 580 mm OD and 243 mm width come from the ISO 15 dimension-series plan (dimension series 41 (medium OD, maximum width)), shared with other spherical roller bearings of the same code.
What does the ECCJ/W33 suffix mean on 24168?
The suffix ECCJ/W33 reads ECCJ — the optimized, higher-capacity version of the CJ design, with a stamped sheet-steel window-type cage with low-friction guidance, plus W33 (outer-ring groove and three lubrication holes); CCK30/W33 is the 1:30 tapered-bore counterpart.
Can 24168 accommodate misalignment and axial load?
Yes on both counts. The sphered outer raceway lets the bearing self-align ≈ 0.5–2.5° depending on series, absorbing shaft deflection and housing-seat errors. The two barrel-roller rows also carry bidirectional axial load in addition to heavy radial load — this is the key difference from cylindrical roller bearings, which take no axial load.
When should the tapered-bore 24168K30 variant be used instead?
Choose the K30 (1:30 tapered bore) variant when the bearing must seat on an adapter or withdrawal sleeve — typical for long shafts, frequent dismounting, or stepped shafts where machining a precision journal is impractical. Sleeve mounting requires measuring clearance reduction or axial drive-up, not nut torque. The cylindrical-bore 24168 listed here seats directly on a machined journal.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.1 spherical roller bearings on 2026-09-26. Read our editorial & correction policy.