23160-CCK-W33 bearing: complete specifications & equivalents
The 23160-CCK-W33 is a ISO 15 radial bearing sized 300 x 500 x 160 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 300 mm |
| Outer diameter D | 500 mm |
| Width B | 160 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 3368 kN |
| Basic static load rating C0 | 5100 kN |
| Fatigue load limit Pu | 380 kN |
| Reference speed (thermal) | 950 rpm |
| Limiting speed (mechanical) | 1200 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 150000 g |
| Manufacturer designation | SKF 23160 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 | 11.811 in |
|---|---|
| Outer diameter D | 19.685 in |
| Width B | 6.299 in |
| ISO bore code | 60 |
| Radial section height (D−d)/2 | 100 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) | 16 of 25 |
| Bore above smallest 23100-series size | 200 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 23160 | SKF | full Dimensions and internal design equivalent — standard interchange. | Tapered-bore (1:12) sleeve-mounted execution of 23160; identical ISO 15 envelope, fits OH3160 adapter sleeve on a 280 mm shaft. |
| C3160 | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF CARB toroidal bearing C 3160 shares the 300×500×160 mm envelope with ratings within 10 %; it self-aligns but floats axially and cannot locate the shaft — locating/non-locating pair, not a substitute. |
| C3160-K | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF CARB toroidal bearing C 3160 K shares the 300×500×160 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 23160-CCK-W33 model number is decoded
For sleeve mounting on a 300 mm shaft, SKF order number SKF 23160 CCK/W33 is the 1:12 tapered-bore spherical roller bearing in the 23100-series family (dimension series 31 (medium OD, wide)); the cylindrical-bore equivalent is a separate order number, 23160-cc-w33. Digit by digit, 23160-cck-w33 reads as bearing type 2 (spherical roller, two barrel-roller rows), dimension series 31, and bore reference 60 resolving to 300 mm; 500 mm OD and 160 mm width are the matching ISO 15 boundary values. Sleeve mounting is why the K 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. Selection arithmetic: the C0/C ratio is about 1.51 (static 5100 kN against dynamic 3368 kN), typical of a spherical roller sized for heavy combined loads, and the 380 kN fatigue load limit Pu is the equivalent-load floor used in the life calculation. On an H adapter sleeve the 300 mm shaft seat only needs an h9 plain journal; slide the sleeve into the 23160-cck-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
- SAG and ball-mill drive shafts
- large mining crusher main shafts
- 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
- 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
- fretting corrosion on a loose rotating shaft seat or in vibratory stand-still
Selection pitfalls — read before you substitute
- At 300 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 300 mm bore (500×160 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 23160-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 23160-cck-w33 and its cylindrical-bore counterpart 23160-cc-w33 share envelope and load ratings (3368/5100 kN) but are not interchangeable in a housing already fitted for direct shaft mounting — the sleeve changes the assembly stack-up.
- Never use the tapered-bore EK/K variant's drive-up figures on this cylindrical-bore 23160-cck-w33; clearance reduction targets differ, and over-driving a cylindrical bore onto an oversized journal cracks the inner ring.
- The 3368/5100 kN ratings are SKF catalogue values for this tapered-bore execution (SKF 23160 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 23160-cck-w33?
The SKF 23160 CCK/W33 is a double-row spherical roller bearing with a 1:12 tapered bore, 300 mm nominal bore, 500 mm outer diameter and 160 mm width (11.811 × 19.685 × 6.299 in) per ISO 15. From SKF catalogue PUB BU/P1 17000: C 3368 kN, C0 5100 kN, Pu 380 kN, reference speed 950 r/min, limiting speed 1,200 r/min, mass about 150000 g. It is mounted on an adapter (H) or withdrawal (AH) sleeve, not directly on the shaft.
What does the K suffix mean on 23160-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 23160-cck-w33?
The sleeve is selected by the actual shaft diameter in millimetres, not only by the 300 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 23160-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 23160-cck-w33 and 23160-cc-w33?
They share the ISO 15 envelope and the same 3368/5100 kN ratings, but 23160-cck-w33 has the 1:12 tapered bore for sleeve mounting on a plain shaft, while 23160-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.