C3030-KV-AHX3030 bearing: complete specifications & equivalents
The C3030-KV-AHX3030 is a ISO 15 radial bearing sized 145 x 225 x 56 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 145 mm |
| Outer diameter D | 225 mm |
| Width B | 56 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 585 kN |
| Basic static load rating C0 | 960 kN |
| Fatigue load limit Pu | 93 kN |
| Limiting speed (mechanical) | 1000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 8900 g |
| Manufacturer designation | SKF C 3030 KV + AHX 3030 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.2-10.3 CARB on sleeves |
| Last verified | 2026-09-29 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.2-10.3 CARB on sleeves) · extracted 2026-09-29
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.2-10.3 CARB on sleeves); 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 & carb-withdrawal-sleeve range
| Bore d | 5.709 in |
|---|---|
| Outer diameter D | 8.858 in |
| Width B | 2.205 in |
| ISO bore code | 30 |
| Radial section height (D−d)/2 | 40 mm |
| Smallest bore in carb-withdrawal-sleeve | 35 mm |
| Largest outer diameter in carb-withdrawal-sleeve | 1580 mm |
| Width range across carb-withdrawal-sleeve | 23–462 mm |
| Bore position in carb-withdrawal-sleeve (smallest first) | 18 of 49 |
| Bore above smallest carb-withdrawal-sleeve size | 110 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C3030 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; brand-specific OEM equivalents (NSK/FAG/NTN) pending multi-source data. |
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 C3030-KV-AHX3030 model number is decoded
For a 145 mm shaft SKF lists C3030-KV-AHX3030 as the complete unit: CARB bearing C 3030 KV plus withdrawal sleeve AHX 3030, one catalogue entry covering both components.Reading the designation: C 3030 KV is the CARB toroidal roller bearing itself — self-aligning, designed as the non-locating bearing that lets the shaft float axially — and the withdrawal sleeve AHX 3030 carries the tapered bore seat on a 145 mm cylindrical shaft. The suffix letters on the bearing fix cage and tolerance execution; the sleeve number is keyed to the bearing bore. Sleeve discipline for AHX 3030: the taper is matched to the bearing bore, the thread end is for withdrawal tooling; never interchange sleeves between bearings of the same bore size without checking the execution letters — seat length and withdrawal thread differ by execution. The C0/C balance of about 1.64 shows the non-locating CARB character: heavy radial capacity with tolerance of misalignment and axial float — the withdrawal sleeve adds the plain-shaft mounting ability, not thrust capability. Mounting C3030-KV-AHX3030 at this size: warm the bearing, drive the withdrawal sleeve to its marked travel on the 145 mm seat and verify the residual radial clearance of the 150 mm CARB bearing before the unit cools — the marked travel is the setting record for the next overhaul. Housing side of C3030-KV-AHX3030 is conventional: a 225 mm H7 bore takes the CARB outer ring, which is free to slide axially in the housing — the toroidal raceway handles the misalignment and the sleeve side handles the location on the 145 mm shaft.
Typical equipment & failure modes
Common applications
- continuous-caster guide rolls and slab-caster segments under heat growth
- vibrating screen exciters fitted with the VE240 tolerance execution
- long fan and kiln main shafts where the free end must float without thrust load
- continuous-caster guide rolls and slab-caster segments under heat growth
Known failure patterns
- misalignment edge loading when the housing bore is out of square with the shaft seat
- sleeve creep on the shaft seat when the sleeve was not driven to its marked travel or clearance
- raceway spalling of the CARB bearing after the catalogue L10 life under contaminated lubrication
- sleeve creep on the shaft seat when the sleeve was not driven to its marked travel or clearance
- misalignment edge loading when the housing bore is out of square with the shaft seat
Selection pitfalls — read before you substitute
- Never set C3030-KV-AHX3030 by locknut torque or "feel": the withdrawal sleeve travel defines the clearance of the 150 mm CARB bearing — measure residual radial clearance during mounting, in steps.
- Contamination discipline: the CARB bearing is open (this execution has no seals); flush the housing before mounting C3030-KV-AHX3030 and maintain the lubricant filtration — hard particles indent the toroidal raceway quickly at heavy load.
- Protect the 145 mm seat: sleeve bore corrosion or seat ovality shows up later as sleeve creep and fretting; inspect and measure the seat at every dismounting of C3030-KV-AHX3030.
- The 585/960 kN ratings are SKF catalogue 17000 values for the CARB bearing; SKF can revise internal geometry without changing the order number, so keep the catalogue version (PUB BU/P1 17000/1 EN, 2018) with the specification.
- Quote the full unit designation SKF C 3030 KV + AHX 3030 when purchasing — bearing and sleeve execution letters are part of the order number and define the matched taper pair.
Frequently asked questions
What are the dimensions and catalogue data of C3030-KV-AHX3030?
The unit is CARB bearing C 3030 KV on withdrawal sleeve AHX 3030, fitting a 145 mm shaft (5.709 in), housing bore 225 mm, bearing width 56 mm. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 585 kN, C0 960 kN, fatigue load limit Pu 93 kN, combined mass about 8.9 kg. The catalogue lists no speed ratings for this size class — permissible speed follows the application heat balance.
Why does C3030-KV-AHX3030 list a 145 mm shaft size when the bearing bore is 150 mm?
The sleeve takes up the difference: the withdrawal sleeve AHX 3030 has a tapered outside that engages the bearing's 150 mm tapered bore and a cylindrical bore that seats on the 145 mm shaft. The catalogue's principal dimensions describe the mounted result — shaft seat, housing bore and bearing width — not the bearing bore alone.
Is C3030-KV-AHX3030 a locating or non-locating bearing?
Non-locating. The CARB toroidal roller bearing is designed as the free end of the shaft: its raceway geometry tolerates misalignment and allows axial float, while a separate locating bearing (typically a spherical roller or paired taper) takes the thrust. The sleeve does not change this function.
Can I buy the bearing C 3030 KV and the sleeve AHX 3030 separately?
The components are catalogued separately, but the taper pair is matched — the sleeve seat and the bearing bore are manufactured to the same execution. Ordering the unit C3030-KV-AHX3030 as one catalogue line keeps bearing and sleeve compatible; if ordering separately, quote both full designations including execution letters.
How is the clearance of C3030-KV-AHX3030 set at mounting?
By sleeve travel: the withdrawal sleeve AHX 3030 is driven or pressed to a marked travel on the 145 mm seat, which sets the interference into the 150 mm bore and with it the radial clearance. Record the travel; hydraulic assistance is standard at this size.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.2-10.3 CARB on sleeves on 2026-09-29. Read our editorial & correction policy.