C3048-K-OH3048-H bearing: complete specifications & equivalents
The C3048-K-OH3048-H is a ISO 15 radial bearing sized 220 x 360 x 92 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 220 mm |
| Outer diameter D | 360 mm |
| Width B | 92 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 1340 kN |
| Basic static load rating C0 | 2160 kN |
| Fatigue load limit Pu | 183 kN |
| Reference speed (thermal) | 1500 rpm |
| Limiting speed (mechanical) | 2000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 42500 g |
| Manufacturer designation | SKF C 3048 K + OH 3048 H |
| 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-adapter-sleeve range
| Bore d | 8.661 in |
|---|---|
| Outer diameter D | 14.173 in |
| Width B | 3.622 in |
| ISO bore code | 48 |
| Radial section height (D−d)/2 | 70 mm |
| Smallest bore in carb-adapter-sleeve | 25 mm |
| Largest outer diameter in carb-adapter-sleeve | 1580 mm |
| Width range across carb-adapter-sleeve | 20–462 mm |
| Bore position in carb-adapter-sleeve (smallest first) | 26 of 51 |
| Bore above smallest carb-adapter-sleeve size | 195 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C3048 | 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 C3048-K-OH3048-H model number is decoded
Selection arithmetic: the unit carries the ratings of its bearing — C 1340 kN, C0 2160 kN, Pu 183 kN from the CARB table — because the sleeve adds no capacity, only the mounting interface on the 220 mm shaft. Mounting C3048-K-OH3048-H: clean the 220 mm seat, slip on sleeve+bearing as one unit, seat against the housing bore 360 mm H7, then drive the withdrawal sleeve up its cone in small steps, checking radial internal clearance after each step until the catalogue residual clearance for the K bore is reached. The unit's temp range follows the bearing: -40 to +120 °C continuous for the standard execution; cage and sleeve execution letters on C 3048 K and OH 3048 H must be checked against the application temperature before substitution.SKF C 3048 K + OH 3048 H is the SKF catalogue designation for a CARB toroidal roller bearing delivered on a sleeve: bearing C 3048 K, withdrawal sleeve OH 3048 H, fitting a 220 mm cylindrical shaft seat at 360 mm housing diameter.Reading the designation: C 3048 K 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 OH 3048 H carries the tapered bore seat on a 220 mm cylindrical shaft. The suffix letters on the bearing fix cage and tolerance execution; the sleeve number is keyed to the bearing bore. The OH 3048 H execution mounts the 240 mm K-bore bearing with a controlled squeeze on the 220 mm shaft: the sleeve cone sets both the interference fit on the shaft and the running clearance inside the CARB bearing, so clearance measurement belongs to the mounting procedure, not to fitting feel.
Typical equipment & failure modes
Common applications
- paper machine drying cylinders and calender rolls with long, thermally expanding shafts
- continuous-caster guide rolls and slab-caster segments under heat growth
- vibrating screen exciters fitted with the VE240 tolerance execution
- 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
- 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
- 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
Selection pitfalls — read before you substitute
- Keep the pair complete in stores: storing bearing C 3048 K and sleeve OH 3048 H on different shelves is how taper-mismatch accidents start — store the unit as received under one part number.
- Keep the pair complete in stores: storing bearing C 3048 K and sleeve OH 3048 H on different shelves is how taper-mismatch accidents start — store the unit as received under one part number.
- Protect the 220 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 C3048-K-OH3048-H.
- The 1340/2160 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 3048 K + OH 3048 H 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 C3048-K-OH3048-H?
The unit is CARB bearing C 3048 K on withdrawal sleeve OH 3048 H, fitting a 220 mm shaft (8.661 in), housing bore 360 mm, bearing width 92 mm. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 1340 kN, C0 2160 kN, fatigue load limit Pu 183 kN, combined mass about 42.5 kg. Reference speed 1,500 r/min, limiting speed 2,000 r/min (bearing values).
Why does C3048-K-OH3048-H list a 220 mm shaft size when the bearing bore is 240 mm?
The sleeve takes up the difference: the withdrawal sleeve OH 3048 H has a tapered outside that engages the bearing's 240 mm tapered bore and a cylindrical bore that seats on the 220 mm shaft. The catalogue's principal dimensions describe the mounted result — shaft seat, housing bore and bearing width — not the bearing bore alone.
Is C3048-K-OH3048-H 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 3048 K and the sleeve OH 3048 H 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 C3048-K-OH3048-H as one catalogue line keeps bearing and sleeve compatible; if ordering separately, quote both full designations including execution letters.
How is the clearance of C3048-K-OH3048-H set at mounting?
By driving the adapter sleeve up its conical seat: the sleeve expands on the 220 mm shaft and onto the bearing bore, reducing the radial internal clearance. Mount in steps and measure residual clearance until it reaches the catalogue value for the K bore — never set it by nut torque alone.
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.