24172-ECCK30J-W33 bearing: complete specifications & equivalents
The 24172-ECCK30J-W33 is a ISO 15 radial bearing sized 360 x 600 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 | 360 mm |
| Outer diameter D | 600 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 | 5737 kN |
| Basic static load rating C0 | 9300 kN |
| Fatigue load limit Pu | 670 kN |
| Reference speed (thermal) | 400 rpm |
| Limiting speed (mechanical) | 600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 295000 g |
| Manufacturer designation | SKF 24172 ECCK30J/W33 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.3 withdrawal-sleeve executions |
| Last verified | 2026-09-26 |
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.
Dimensions in inches & 24100-series range
| Bore d | 14.173 in |
|---|---|
| Outer diameter D | 23.622 in |
| Width B | 9.567 in |
| ISO bore code | 72 |
| 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) | 19 of 25 |
| Bore above smallest 24100-series size | 260 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 24172 | SKF | full Dimensions and internal design equivalent — standard interchange. | Tapered-bore (1:30) sleeve-mounted execution of 24172; identical ISO 15 envelope, fits AOH24172 withdrawal sleeve on a 340 mm shaft. |
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 24172-ECCK30J-W33 model number is decoded
In SKF catalogue PUB BU/P1 17000, 24172-ecck30j-w33 denotes the tapered-bore version (K30 suffix, taper 1:30) of the 24100-series spherical roller bearing: dimensioned 360×600×243 mm, it seats on an adapter or withdrawal sleeve rather than directly on a machined journal. Numbering ties the bearing to its envelope: 24172-ecck30j-w33 means spherical-roller type, dimension series 41, 360 mm bore — which is why the 600×243 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. The 670 kN Pu figure feeds the adjusted-life equation at contaminated or partial-film conditions, and the 1.62 C0/C balance shows this execution is tuned to heavy radial-plus-axial duty with misalignment tolerance. On an H adapter sleeve the 360 mm shaft seat only needs an h9 plain journal; slide the sleeve into the 24172-ecck30j-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
Common applications
- steel-plant continuous-caster segments
- large induced-draft fan rotors
- fan and pulley shafts that need periodic bearing removal in the field
- shafting produced to commercial tolerances, where the adapter sleeve supplies the precision seat
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
- inner-ring circumferential cracking after over-drive on the tapered seat removes too much radial clearance and the bearing runs preloaded
- surface distress and smearing when the relubrication interval is exceeded — the W33 groove is only effective if grease actually reaches the roller rows
- false brinelling on standby machines exposed to external vibration
Selection pitfalls — read before you substitute
- At 360 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 360 mm bore (600×243 mm) is the heaviest medium-OD execution, built for extreme radial and shock loads at low speed; the 600 r/min ceiling is part of the design, not an afterthought — check it before using it in a faster drive.
- Never apply the drive-up or clearance-reduction figures for this 1:30 tapered 24172-ecck30j-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 24172-ecck30j-w33 and its cylindrical-bore counterpart 24172-ecck30j-w33 share envelope and load ratings (5737/9300 kN) but are not interchangeable in a housing already fitted for direct shaft mounting — the sleeve changes the assembly stack-up.
- The 24172-ecck30j-w33 shares its ISO 15 envelope across brands, but internal geometry differs — SKF load ratings in this row are 5737/9300 kN; another maker's same-size bearing may rate higher or lower, so do not interchange on envelope alone.
- The 5737/9300 kN ratings are SKF catalogue values for this tapered-bore execution (SKF 24172 ECCK30J/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.
Frequently asked questions
What are the dimensions and catalogue data of 24172-ecck30j-w33?
The SKF 24172 ECCK30J/W33 is a double-row spherical roller bearing with a 1:30 tapered bore, 360 mm nominal bore, 600 mm outer diameter and 243 mm width (14.173 × 23.622 × 9.567 in) per ISO 15. From SKF catalogue PUB BU/P1 17000: C 5737 kN, C0 9300 kN, Pu 670 kN, reference speed 400 r/min, limiting speed 600 r/min, mass about 295000 g. It is mounted on an adapter (H) or withdrawal (AH) sleeve, not directly on the shaft.
What does the K30 suffix mean on 24172-ecck30j-w33?
K30 (written CCK30/W33 in the CC execution) marks the 1:30 tapered bore for sleeve mounting. The bearing seats on an H-series adapter sleeve with a KM locknut and MB lock washer (plain shaft, h9 tolerance), or on an AH withdrawal sleeve against a shaft shoulder.
Which adapter sleeve fits the 24172-ecck30j-w33?
The sleeve is selected by the actual shaft diameter in millimetres, not only by the 360 mm nominal bore: SKF H-sleeve numbers each cover a small shaft-diameter range and are width-series specific (H39/H30/H31/H32 matching dimension series 39/40/31/32), and each kit bundles the sleeve, KM locknut and MB lock washer. For shoulder locations use an AH withdrawal sleeve instead. Confirm the sleeve number against the SKF catalogue PUB BU/P1 17000 mounting tables for your shaft size.
How is the 24172-ecck30j-w33 driven up and checked?
Mounting is controlled by radial-clearance reduction or axial drive-up distance from the SKF catalogue tables for the 1:30 taper, never by locknut torque. Measure clearance with feeler gauges before and after tightening the KM nut, stop at the tabulated decrease, and lock the MB washer tab. Over-drive removes too much clearance (inner-ring cracking risk); under-drive lets the sleeve creep and fret.
What is the difference between 24172-ecck30j-w33 and 24172-ecck30j-w33?
They share the ISO 15 envelope and the same 5737/9300 kN ratings, but 24172-ecck30j-w33 has the 1:30 tapered bore for sleeve mounting on a plain shaft, while 24172-ecck30j-w33 has a cylindrical bore for direct mounting on a machined interference journal (typically m6 with H7 housing). They are separate order numbers, not interchangeable in the same shaft arrangement.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.3 withdrawal-sleeve executions on 2026-09-26. Read our editorial & correction policy.