C30-530-KM-AOH30-530 bearing: complete specifications & equivalents
The C30-530-KM-AOH30-530 is a ISO 15 radial bearing sized 500 x 780 x 185 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 500 mm |
| Outer diameter D | 780 mm |
| Width B | 185 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 5100 kN |
| Basic static load rating C0 | 9500 kN |
| Fatigue load limit Pu | 630 kN |
| Reference speed (thermal) | 600 rpm |
| Limiting speed (mechanical) | 800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 355000 g |
| Manufacturer designation | SKF C 30/530 KM + AOH 30/530 |
| 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 | 19.685 in |
|---|---|
| Outer diameter D | 30.709 in |
| Width B | 7.283 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 140 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) | 39 of 49 |
| Bore above smallest carb-withdrawal-sleeve size | 465 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C30 | 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 C30-530-KM-AOH30-530 model number is decoded
Dismounting uses the withdrawal thread on AOH 30/530: pull the sleeve back along its cone with the dedicated withdrawal nut or hydraulic tool — the CARB bearing and sleeve come off the 500 mm seat as one piece and the seat stays undamaged. Housing side of C30-530-KM-AOH30-530 is conventional: a 780 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 500 mm shaft.For a 500 mm shaft SKF lists C30-530-KM-AOH30-530 as the complete unit: CARB bearing C 30/530 KM plus withdrawal sleeve AOH 30/530, one catalogue entry covering both components.Numbering logic: the bearing half C 30/530 KM follows the CARB works numbering (type C, dimension series, 530 mm bore), while AOH 30/530 identifies the sleeve execution for that bore; the combo C30-530-KM-AOH30-530 exists in the catalogue so that shaft (500 mm), housing (780 mm) and both components are specified with one order number. Sleeve discipline for AOH 30/530: 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 1.86 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.
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
- long fan and kiln main shafts where the free end must float without thrust load
Known failure patterns
- misalignment edge loading when the housing bore is out of square with the shaft seat
- raceway spalling of the CARB bearing after the catalogue L10 life under contaminated lubrication
- 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
- misalignment edge loading when the housing bore is out of square with the shaft seat
Selection pitfalls — read before you substitute
- Sleeve and bearing are a matched taper pair: never fit sleeve AOH 30/530 onto a different CARB bearing of the same bore size without verifying the execution letters — seat length and taper contact differ.
- Never set C30-530-KM-AOH30-530 by locknut torque or "feel": the withdrawal sleeve travel defines the clearance of the 530 mm CARB bearing — measure residual radial clearance during mounting, in steps.
- Sleeve and bearing are a matched taper pair: never fit sleeve AOH 30/530 onto a different CARB bearing of the same bore size without verifying the execution letters — seat length and taper contact differ.
- The 5100/9500 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 30/530 KM + AOH 30/530 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 C30-530-KM-AOH30-530?
The unit is CARB bearing C 30/530 KM on withdrawal sleeve AOH 30/530, fitting a 500 mm shaft (19.685 in), housing bore 780 mm, bearing width 185 mm. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 5100 kN, C0 9500 kN, fatigue load limit Pu 630 kN, combined mass about 355.0 kg. Reference speed 600 r/min, limiting speed 800 r/min (bearing values).
Why does C30-530-KM-AOH30-530 list a 500 mm shaft size when the bearing bore is 530 mm?
The sleeve takes up the difference: the withdrawal sleeve AOH 30/530 has a tapered outside that engages the bearing's 530 mm tapered bore and a cylindrical bore that seats on the 500 mm shaft. The catalogue's principal dimensions describe the mounted result — shaft seat, housing bore and bearing width — not the bearing bore alone.
Is C30-530-KM-AOH30-530 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 30/530 KM and the sleeve AOH 30/530 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 C30-530-KM-AOH30-530 as one catalogue line keeps bearing and sleeve compatible; if ordering separately, quote both full designations including execution letters.
How is the clearance of C30-530-KM-AOH30-530 set at mounting?
By sleeve travel: the withdrawal sleeve AOH 30/530 is driven or pressed to a marked travel on the 500 mm seat, which sets the interference into the 530 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.