C3052-K-AOH3052 bearing: complete specifications & equivalents
The C3052-K-AOH3052 is a ISO 15 radial bearing sized 240 x 400 x 104 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 240 mm |
| Outer diameter D | 400 mm |
| Width B | 104 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 1760 kN |
| Basic static load rating C0 | 2850 kN |
| Fatigue load limit Pu | 232 kN |
| Reference speed (thermal) | 1300 rpm |
| Limiting speed (mechanical) | 1800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 55500 g |
| Manufacturer designation | SKF C 3052 K + AOH 3052 |
| 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 | 9.449 in |
|---|---|
| Outer diameter D | 15.748 in |
| Width B | 4.094 in |
| ISO bore code | 52 |
| Radial section height (D−d)/2 | 80 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) | 26 of 49 |
| Bore above smallest carb-withdrawal-sleeve size | 205 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C3052 | 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 C3052-K-AOH3052 model number is decoded
Mounting C3052-K-AOH3052 at this size: warm the bearing, drive the withdrawal sleeve to its marked travel on the 240 mm seat and verify the residual radial clearance of the 260 mm CARB bearing before the unit cools — the marked travel is the setting record for the next overhaul. Housing side of C3052-K-AOH3052 is conventional: a 400 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 240 mm shaft.SKF C 3052 K + AOH 3052 denotes bearing C 3052 K mounted on withdrawal sleeve AOH 3052: a 240 mm shaft seat, 400 mm housing bore, and the sleeve providing the interference a 260 mm tapered bore needs.Digit by digit, C3052-K-AOH3052 = CARB bearing C 3052 K (260 mm bore, 400 mm OD, 104 mm width) + withdrawal sleeve AOH 3052 for the 240 mm cylindrical shaft seat; cage and tolerance letters stay with the bearing half of the designation. Sleeve discipline for AOH 3052: 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. With a combined mass of 55.5 kg over the 240×400×104 mm principal plan, the unit replaces a machined shoulder seat — the mass difference against the bare bearing is the sleeve steel, priced into the one order number.
Typical equipment & failure modes
Common applications
- heavy industrial gearbox layshafts used as the non-locating position
- winder and reel drums in paper and steel strip plants
- paper machine drying cylinders and calender rolls with long, thermally expanding shafts
- paper machine drying cylinders and calender rolls with long, thermally expanding shafts
Known failure patterns
- raceway spalling of the CARB bearing after the catalogue L10 life under contaminated lubrication
- fretting corrosion at the shaft-sleeve interface under vibration with an undersized 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
- misalignment edge loading when the housing bore is out of square with the shaft seat
Selection pitfalls — read before you substitute
- Keep the pair complete in stores: storing bearing C 3052 K and sleeve AOH 3052 on different shelves is how taper-mismatch accidents start — store the unit as received under one part number.
- Do not re-use a sleeve that shows taper scuffing: a scratched cone changes the travel-to-clearance relationship of the whole C3052-K-AOH3052 unit — replace the sleeve with the bearing.
- Never set C3052-K-AOH3052 by locknut torque or "feel": the withdrawal sleeve travel defines the clearance of the 260 mm CARB bearing — measure residual radial clearance during mounting, in steps.
- The 1760/2850 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 3052 K + AOH 3052 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 C3052-K-AOH3052?
The unit is CARB bearing C 3052 K on withdrawal sleeve AOH 3052, fitting a 240 mm shaft (9.449 in), housing bore 400 mm, bearing width 104 mm. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 1760 kN, C0 2850 kN, fatigue load limit Pu 232 kN, combined mass about 55.5 kg. Reference speed 1,300 r/min, limiting speed 1,800 r/min (bearing values).
Why does C3052-K-AOH3052 list a 240 mm shaft size when the bearing bore is 260 mm?
The sleeve takes up the difference: the withdrawal sleeve AOH 3052 has a tapered outside that engages the bearing's 260 mm tapered bore and a cylindrical bore that seats on the 240 mm shaft. The catalogue's principal dimensions describe the mounted result — shaft seat, housing bore and bearing width — not the bearing bore alone.
Is C3052-K-AOH3052 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 3052 K and the sleeve AOH 3052 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 C3052-K-AOH3052 as one catalogue line keeps bearing and sleeve compatible; if ordering separately, quote both full designations including execution letters.
How is the clearance of C3052-K-AOH3052 set at mounting?
By sleeve travel: the withdrawal sleeve AOH 3052 is driven or pressed to a marked travel on the 240 mm seat, which sets the interference into the 260 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.