24156 bearing: complete specifications & equivalents
The 24156 is a ISO 15 radial bearing sized 280 x 460 x 180 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 280 mm |
| Outer diameter D | 460 mm |
| Width B | 180 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 3183 kN |
| Basic static load rating C0 | 5100 kN |
| Fatigue load limit Pu | 415 kN |
| Reference speed (thermal) | 630 rpm |
| Limiting speed (mechanical) | 900 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 120000 g |
| Manufacturer designation | SKF 24156 CC/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 | 11.024 in |
|---|---|
| Outer diameter D | 18.11 in |
| Width B | 7.087 in |
| ISO bore code | 56 |
| Radial section height (D−d)/2 | 90 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) | 15 of 25 |
| Bore above smallest 24100-series size | 180 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 24156 | 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. |
| 24156-CCK30-W33 | SKF | full Dimensions and internal design equivalent — standard interchange. | Tapered-bore (1:30) execution on AOH24156 withdrawal sleeve; same ISO 15 envelope, separate order number. |
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 24156 model number is decoded
24156 CC/W33 belongs to the SKF spherical roller range — the 280 mm bore entry in the 24100-series series (dimension series 41 (medium OD, maximum width)), dimensioned 460 mm OD and 180 mm wide. On the SKF nameplate, 24156 follows the ISO 15 convention: 2 for the spherical roller type, 41 for the dimension series 41 (medium OD, maximum width), final digits 56 for the 280 mm bore. SKF basic executions here are CC/W33; specialist suffixes change the bearing materially — VA405 for vibrating screens (C4 clearance, surface-hardened cage), 2CS5 for the sealed variant — and must be quoted in full when ordering. At 630 r/min reference speed the 90.0 mm-section 24156 is governed thermally by lubricant flow through the W33 groove and the two-row roller complement; grease or oil selection should be made against that value, with 900 r/min as the mechanical ceiling. Drive-on force must go through the ring being fitted: press or induction-heat the inner ring onto the 280 mm shaft (max 120 °C) and never transmit mounting force through the roller complement, or the raceways brinell.
Typical equipment & failure modes
Common applications
- large induced-draft fan rotors
- SAG and ball-mill drive shafts
- large mining crusher main shafts
- wind-turbine main shaft support
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
- stamped-steel cage fatigue after long service in high-vibration screening duty without the VA405 execution
- surface distress and smearing when the relubrication interval is exceeded — the W33 groove is only effective if grease actually reaches the roller rows
- hard-particle indentation of the raceway in unfiltered oil or contaminated grease systems
Selection pitfalls — read before you substitute
- At 280 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 280 mm bore (460×180 mm) is the heaviest medium-OD execution, built for extreme radial and shock loads at low speed; the 900 r/min ceiling is part of the design, not an afterthought — check it before using it in a faster drive.
- The self-aligning feature is not a license to ignore alignment: beyond ≈ 0.5–2.5° (series-dependent) the edge loading eats the fatigue margin, and seal drag grows as the rings tilt.
- Never use the tapered-bore CCK30/K30 variant's drive-up figures on this cylindrical-bore 24156; clearance reduction targets differ, and over-driving a cylindrical bore onto an oversized journal cracks the inner ring.
- The 3183/5100 kN ratings are SKF catalogue values for this exact execution (24156 CC/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 24156 (cylindrical bore as listed, tapered-bore 24156 CCK30/W33 variant, plus sealed and vibrating-screen options in the same envelope); they are not interchangeable order numbers — quote the full 24156 CC/W33 designation when purchasing.
Frequently asked questions
What are the dimensions and catalogue data of 24156?
The 24156 CC/W33 is a double-row spherical roller bearing with 280 mm bore, 460 mm outer diameter and 180 mm width (11.024 × 18.11 × 7.087 in) per ISO 15. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 3183 kN, C0 5100 kN, fatigue load limit Pu 415 kN, reference speed 630 r/min, limiting speed 900 r/min, mass about 120000 g. It is an open, self-aligning bearing with two pressed-steel cages with a floating guide ring.
How does the 24156 bore code work?
The last two digits of 24156 are bore code 56, so 56 × 5 = 280 mm bore. The 460 mm OD and 180 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 CC/W33 suffix mean on 24156?
CC denotes two pressed-steel cages with a floating guide ring between the roller rows, and W33 adds an annular groove plus three lubrication holes in the outer ring for relubrication. In dimension series 40/41 the tapered-bore counterpart carries CCK30/W33 with a 1:30 taper.
Can 24156 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 24156K30 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 24156 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.