C2226-K-H3126-L bearing: complete specifications & equivalents
The C2226-K-H3126-L is a ISO 15 radial bearing sized 115 x 230 x 64 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 115 mm |
| Outer diameter D | 230 mm |
| Width B | 64 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 735 kN |
| Basic static load rating C0 | 930 kN |
| Fatigue load limit Pu | 91.5 kN |
| Reference speed (thermal) | 2800 rpm |
| Limiting speed (mechanical) | 3800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 14000 g |
| Manufacturer designation | SKF C 2226 K + H 3126 L |
| 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 | 4.528 in |
|---|---|
| Outer diameter D | 9.055 in |
| Width B | 2.52 in |
| ISO bore code | 26 |
| Radial section height (D−d)/2 | 57.5 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) | 17 of 51 |
| Bore above smallest carb-adapter-sleeve size | 90 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C2226 | 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 C2226-K-H3126-L model number is decoded
Dismounting: release the locknut of H 3126 L, drive the sleeve back off its cone — never hammer the inner ring; the CARB bearing separates from the shaft with the sleeve and stays serviceable if the raceways are sound. The unit's temp range follows the bearing: -40 to +120 °C continuous for the standard execution; cage and sleeve execution letters on C 2226 K and H 3126 L must be checked against the application temperature before substitution.C2226-K-H3126-L is a complete SKF mounting unit: the CARB toroidal roller bearing C 2226 K supplied on its adapter sleeve H 3126 L, listed in SKF catalogue PUB BU/P1 17000 for a 115 mm shaft seat.On the SKF nameplate, C2226-K-H3126-L reads as two catalogued components: the CARB bearing C 2226 K with its 130 mm tapered (K) bore, and the adapter sleeve H 3126 L whose seat diameter matches that bore — the sleeve number encodes the bearing bore, never the 115 mm shaft size. OH execution note: H 3126 L 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 115 mm shaft seat during overhauls. Speed note: for C2226-K-H3126-L the CARB table lists 2,800 r/min reference and 3,800 r/min limiting speed the permissible speed of the unit is bounded by the CARB bearing's own catalogue values and by the sleeve-seat interface; sleeve-mounted units run marginally cooler-balanced because the sleeve adds a thermal resistance at the 115 mm seat.
Typical equipment & failure modes
Common applications
- long fan and kiln main shafts where the free end must float without thrust load
- heavy industrial gearbox layshafts used as the non-locating position
- winder and reel drums in paper and steel strip plants
- winder and reel drums in paper and steel strip plants
Known failure patterns
- 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
- 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
- overheating from a preload set at mounting when sleeve travel overshot the catalogue clearance
Selection pitfalls — read before you substitute
- Keep the pair complete in stores: storing bearing C 2226 K and sleeve H 3126 L 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 C2226-K-H3126-L unit — replace the sleeve with the bearing.
- Do not re-use a sleeve that shows taper scuffing: a scratched cone changes the travel-to-clearance relationship of the whole C2226-K-H3126-L unit — replace the sleeve with the bearing.
- The 735/930 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 2226 K + H 3126 L 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 C2226-K-H3126-L?
The unit is CARB bearing C 2226 K on adapter sleeve H 3126 L, fitting a 115 mm shaft (4.528 in), housing bore 230 mm, bearing width 64 mm. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 735 kN, C0 930 kN, fatigue load limit Pu 91.5 kN, combined mass about 14.0 kg. Reference speed 2,800 r/min, limiting speed 3,800 r/min (bearing values).
Why does C2226-K-H3126-L list a 115 mm shaft size when the bearing bore is 130 mm?
The sleeve takes up the difference: the adapter sleeve H 3126 L has a tapered outside that engages the bearing's 130 mm tapered bore and a cylindrical bore that seats on the 115 mm shaft. The catalogue's principal dimensions describe the mounted result — shaft seat, housing bore and bearing width — not the bearing bore alone.
Is C2226-K-H3126-L 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 2226 K and the sleeve H 3126 L 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 C2226-K-H3126-L as one catalogue line keeps bearing and sleeve compatible; if ordering separately, quote both full designations including execution letters.
How is the clearance of C2226-K-H3126-L set at mounting?
By driving the adapter sleeve up its conical seat: the sleeve expands on the 115 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.