23184 bearing: complete specifications & equivalents
The 23184 is a ISO 15 radial bearing sized 420 x 700 x 224 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 420 mm |
| Outer diameter D | 700 mm |
| Width B | 224 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 5919 kN |
| Basic static load rating C0 | 9300 kN |
| Fatigue load limit Pu | 620 kN |
| Reference speed (thermal) | 480 rpm |
| Limiting speed (mechanical) | 900 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 350000 g |
| Manufacturer designation | SKF 23184 CJ/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 & 23100-series range
| Bore d | 16.535 in |
|---|---|
| Outer diameter D | 27.559 in |
| Width B | 8.819 in |
| ISO bore code | 84 |
| Radial section height (D−d)/2 | 140 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) | 22 of 25 |
| Bore above smallest 23100-series size | 320 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 23184 | 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. |
| 23184-CKJ-W33 | SKF | full Dimensions and internal design equivalent — standard interchange. | Tapered-bore (1:12) execution on OH3184 adapter sleeve; same ISO 15 envelope, separate order number. |
| C3184-M | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF CARB toroidal bearing C 3184 M shares the 420×700×224 mm envelope but catalogue C/C0 differ (6000/10400 kN vs 5919/9300 kN); it floats axially and cannot locate the shaft — pair, never swap one-for-one. |
| C3184-KM | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF CARB toroidal bearing C 3184 KM shares the 420×700×224 mm envelope but catalogue C/C0 differ (6000/10400 kN vs 5919/9300 kN); it floats axially and cannot locate the shaft — pair, never swap one-for-one. |
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 23184 model number is decoded
SKF 23184 (23184 CJ/W33) is the spherical-roller choice for a 420 mm shaft — barrel rollers between an inner ring with two raceways and a common sphered outer raceway inside the 700×224 mm ISO 15 envelope. The code breaks down as type digit 2 (double-row spherical roller), dimension series 31 (dimension series 31 (medium OD, wide)), and bore code 84 = 420 mm; dimensions 420×700×224 mm therefore match the ISO 15 envelope. In SKF suffix language, CJ/W33 is the newer stamped-window-steel-cage execution; it replaces many CC applications with lower friction, while the sealed 2CS5 and vibrating-screen VA405 remain separate order numbers. The 620 kN Pu figure feeds the adjusted-life equation at contaminated or partial-film conditions, and the 1.57 C0/C balance shows this execution is tuned to heavy radial-plus-axial duty with misalignment tolerance. After mounting, swing the outer ring to confirm free self-alignment: the 23184 should tilt through its full catalogue misalignment range without binding; a stiff joint signals a cocked seat or shoulder interference.
Typical equipment & failure modes
Common applications
- steel-plant continuous-caster segments
- large induced-draft fan rotors
- SAG and ball-mill drive shafts
- large mining crusher main 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
- 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
- seal-lip wear and grease purge loss when an open bearing is run without functioning housing seals
Selection pitfalls — read before you substitute
- At 420 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 420 mm bore (700×224 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.
- 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.
- Catalogue reference speed and limiting speed are different limits: the 480 r/min reference is a thermal criterion under load, while the 900 r/min limiting value is the mechanical ceiling — observe both.
- The 5919/9300 kN ratings are SKF catalogue values for this exact execution (23184 CJ/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 23184 (cylindrical bore as listed, tapered-bore 23184 CCK/W33 variant, plus sealed and vibrating-screen options in the same envelope); they are not interchangeable order numbers — quote the full 23184 CJ/W33 designation when purchasing.
Frequently asked questions
What are the dimensions and catalogue data of 23184?
The 23184 CJ/W33 is a double-row spherical roller bearing with 420 mm bore, 700 mm outer diameter and 224 mm width (16.535 × 27.559 × 8.819 in) per ISO 15. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 5919 kN, C0 9300 kN, fatigue load limit Pu 620 kN, reference speed 480 r/min, limiting speed 900 r/min, mass about 350000 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 23184 bore code work?
The last two digits of 23184 are bore code 84, so 84 × 5 = 420 mm bore. The 700 mm OD and 224 mm width come from the ISO 15 dimension-series plan (dimension series 31 (medium OD, wide)), shared with other spherical roller bearings of the same code.
What does the CJ/W33 suffix mean on 23184?
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. CCK/W33 is the 1:12 tapered-bore counterpart.
Can 23184 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 23184K variant be used instead?
Choose the K (1:12 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 23184 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.