23140-CCK-W33 bearing: complete specifications & equivalents
The 23140-CCK-W33 is a ISO 15 radial bearing sized 200 x 340 x 112 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 200 mm |
| Outer diameter D | 340 mm |
| Width B | 112 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 1665 kN |
| Basic static load rating C0 | 2360 kN |
| Fatigue load limit Pu | 204 kN |
| Reference speed (thermal) | 1500 rpm |
| Limiting speed (mechanical) | 1900 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 55500 g |
| Manufacturer designation | SKF 23140 CCK/W33 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.2 adapter-sleeve executions |
| Last verified | 2026-09-26 |
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.
Dimensions in inches & 23100-series range
| Bore d | 7.874 in |
|---|---|
| Outer diameter D | 13.386 in |
| Width B | 4.409 in |
| ISO bore code | 40 |
| Radial section height (D−d)/2 | 70 mm |
| Smallest bore in 23100-series | 100 mm |
| Largest outer diameter in 23100-series | 790 mm |
| Width range across 23100-series | 52–248 mm |
| Bore position in 23100-series (smallest first) | 11 of 25 |
| Bore above smallest 23100-series size | 100 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 23140 | SKF | full Dimensions and internal design equivalent — standard interchange. | Tapered-bore (1:12) sleeve-mounted execution of 23140; identical ISO 15 envelope, fits H3140 adapter sleeve on a 180 mm shaft. |
| C3140 | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF CARB toroidal bearing C 3140 shares the 200×340×112 mm envelope with ratings within 10 %; it self-aligns but floats axially and cannot locate the shaft — locating/non-locating pair, not a substitute. |
| C3140-K | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF CARB toroidal bearing C 3140 K shares the 200×340×112 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 23140-CCK-W33 model number is decoded
The SKF 23140 CCK/W33 is a 200×340×112 mm spherical roller bearing with a 1:12 tapered bore — SKF catalogue execution for sleeve mounting on a 200 mm plain shaft, retaining the double-row self-aligning barrel-roller design. On the SKF nameplate, 23140-cck-w33 follows the ISO 15 convention: 2 for the spherical roller type, 31 for the dimension series 31 (medium OD, wide), final digits 40 for the 200 mm bore. Reading the suffix on 23140-cck-w33, the K (or EK/CCK) element changes only the bore — 1:12 taper for sleeve mounting — while the rest of the suffix chain (CC cages with W33 groove) keeps the same internal design, cage and W33 relubrication features as the cylindrical-bore 23140-cc-w33. Catalogue mass 55500 g for the 200×340×112 mm open execution covers the two pressed-steel cages with a floating guide ring; tapered-bore and sealed variants differ in mass and carry their own order numbers. 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 200 mm 23140-cck-w33, checked with feeler gauges before and after drive-up.
Typical equipment & failure modes
Common applications
- large dredger and marine winch drums
- steel-plant continuous-caster segments
- heavy crusher and screen shafts mounted and dismounted with hydraulic nuts
- long through-shafts in conveyors, where a sleeve seat avoids a precision journal
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
- fretting corrosion and sleeve-seat scoring when drive-up is insufficient and the tapered inner ring creeps on the adapter sleeve
- surface distress and smearing when the relubrication interval is exceeded — the W33 groove is only effective if grease actually reaches the roller rows
- brinelling from static overload or impact during handling and mounting
Selection pitfalls — read before you substitute
- At 200 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 200 mm bore (340×112 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 23140-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 23140-cck-w33 and its cylindrical-bore counterpart 23140-cc-w33 share envelope and load ratings (1665/2360 kN) but are not interchangeable in a housing already fitted for direct shaft mounting — the sleeve changes the assembly stack-up.
- The 23140-cck-w33 shares its ISO 15 envelope across brands, but internal geometry differs — SKF load ratings in this row are 1665/2360 kN; another maker's same-size bearing may rate higher or lower, so do not interchange on envelope alone.
- The 1665/2360 kN ratings are SKF catalogue values for this tapered-bore execution (SKF 23140 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.
Frequently asked questions
What are the dimensions and catalogue data of 23140-cck-w33?
The SKF 23140 CCK/W33 is a double-row spherical roller bearing with a 1:12 tapered bore, 200 mm nominal bore, 340 mm outer diameter and 112 mm width (7.874 × 13.386 × 4.409 in) per ISO 15. From SKF catalogue PUB BU/P1 17000: C 1665 kN, C0 2360 kN, Pu 204 kN, reference speed 1,500 r/min, limiting speed 1,900 r/min, mass about 55500 g. It is mounted on an adapter (H) or withdrawal (AH) sleeve, not directly on the shaft.
What does the K suffix mean on 23140-cck-w33?
K marks a 1:12 tapered bore for sleeve mounting — SKF writes EK or CCK(/W33), FAG writes -K- inside the suffix chain 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. The rarer K30 suffix would instead mean a 1:30 taper; dimension series 40/41 spherical rollers commonly use it.
Which adapter sleeve fits the 23140-cck-w33?
The sleeve is selected by the actual shaft diameter in millimetres, not only by the 200 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 23140-cck-w33 driven up and checked?
Mounting is controlled by radial-clearance reduction or axial drive-up distance from the SKF catalogue tables for the 1:12 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 23140-cck-w33 and 23140-cc-w33?
They share the ISO 15 envelope and the same 1665/2360 kN ratings, but 23140-cck-w33 has the 1:12 tapered bore for sleeve mounting on a plain shaft, while 23140-cc-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. 9.2 adapter-sleeve executions on 2026-09-26. Read our editorial & correction policy.