C3030-KV-H3030 bearing: complete specifications & equivalents
The C3030-KV-H3030 is a ISO 15 radial bearing sized 135 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 | 135 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 | 11500 g |
| Manufacturer designation | SKF C 3030 KV + H 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-adapter-sleeve range
| Bore d | 5.315 in |
|---|---|
| Outer diameter D | 8.858 in |
| Width B | 2.205 in |
| ISO bore code | 30 |
| Radial section height (D−d)/2 | 45 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) | 19 of 51 |
| Bore above smallest carb-adapter-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-H3030 model number is decoded
Digit by digit, C3030-KV-H3030 = CARB bearing C 3030 KV (150 mm bore, 225 mm OD, 56 mm width) + adapter sleeve H 3030 for the 135 mm cylindrical shaft seat; cage and tolerance letters stay with the bearing half of the designation. OH execution note: H 3030 is a withdrawal-type sleeve — it gives a more defined interference than a locknut adapter and can be removed without heavy hammer work, which at this bearing size protects the 135 mm shaft seat during overhauls. Fatigue floor: Pu 93 kN governs the adjusted-life calculation at contaminated or partial-film conditions, exactly as for the bare C 3030 KV bearing — the sleeve execution does not change the L10 arithmetic. The locknut torque of H 3030 sets the sleeve travel; use the SKF procedure (measure clearance reduction, not torque feel) — over-driving the sleeve preloads the 150 mm CARB bearing and overheats the unit within hours. Housing side of C3030-KV-H3030 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 135 mm shaft.In SKF catalogue PUB BU/P1 17000, C3030-KV-H3030 appears as bearing C 3030 KV + adapter sleeve H 3030: the non-locating CARB principle combined with a tapered-bore sleeve seat for a 135 mm shaft.
Typical equipment & failure modes
Common applications
- winder and reel drums in paper and steel strip plants
- paper machine drying cylinders and calender rolls with long, thermally expanding shafts
- continuous-caster guide rolls and slab-caster segments under heat growth
- continuous-caster guide rolls and slab-caster segments under heat growth
Known failure patterns
- overheating from a preload set at mounting when sleeve travel overshot the catalogue clearance
- 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
- fretting corrosion at the shaft-sleeve interface under vibration with an undersized seat
- overheating from a preload set at mounting when sleeve travel overshot the catalogue clearance
Selection pitfalls — read before you substitute
- Do not run C3030-KV-H3030 as a locating bearing: the CARB raceway is toroidal and the unit is designed to float axially; blocking it against a shoulder preloads the rollers and ends in thermal failure.
- Sleeve and bearing are a matched taper pair: never fit sleeve H 3030 onto a different CARB bearing of the same bore size without verifying the execution letters — seat length and taper contact differ.
- Do not re-use a sleeve that shows taper scuffing: a scratched cone changes the travel-to-clearance relationship of the whole C3030-KV-H3030 unit — replace the sleeve with the bearing.
- 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 + H 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-H3030?
The unit is CARB bearing C 3030 KV on adapter sleeve H 3030, fitting a 135 mm shaft (5.315 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 11.5 kg. The catalogue lists no speed ratings for this size class — permissible speed follows the application heat balance.
Why does C3030-KV-H3030 list a 135 mm shaft size when the bearing bore is 150 mm?
The sleeve takes up the difference: the adapter sleeve H 3030 has a tapered outside that engages the bearing's 150 mm tapered bore and a cylindrical bore that seats on the 135 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-H3030 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 H 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-H3030 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-H3030 set at mounting?
By driving the adapter sleeve up its conical seat: the sleeve expands on the 135 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.