C2209-KTN9-H309-E bearing: complete specifications & equivalents
The C2209-KTN9-H309-E is a ISO 15 radial bearing sized 40 x 85 x 23 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 40 mm |
| Outer diameter D | 85 mm |
| Width B | 23 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | polymer (PA66 glass-fibre reinforced) |
| Basic dynamic load rating C | 93 kN |
| Basic static load rating C0 | 93 kN |
| Fatigue load limit Pu | 10.8 kN |
| Reference speed (thermal) | 7500 rpm |
| Limiting speed (mechanical) | 11000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 760 g |
| Manufacturer designation | SKF C 2209 KTN9 + H 309 E |
| 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 | 1.575 in |
|---|---|
| Outer diameter D | 3.346 in |
| Width B | 0.906 in |
| ISO bore code | 09 |
| Radial section height (D−d)/2 | 22.5 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) | 4 of 51 |
| Bore above smallest carb-adapter-sleeve size | 15 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C2209 | 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 C2209-KTN9-H309-E model number is decoded
The locknut torque of H 309 E sets the sleeve travel; use the SKF procedure (measure clearance reduction, not torque feel) — over-driving the sleeve preloads the 45 mm CARB bearing and overheats the unit within hours. The unit's temp range follows the bearing: -40 to +120 °C continuous for the standard execution; cage and sleeve execution letters on C 2209 KTN9 and H 309 E must be checked against the application temperature before substitution.SKF C 2209 KTN9 + H 309 E is the SKF catalogue designation for a CARB toroidal roller bearing delivered on a sleeve: bearing C 2209 KTN9, adapter sleeve H 309 E, fitting a 40 mm cylindrical shaft seat at 85 mm housing diameter.Numbering logic: the bearing half C 2209 KTN9 follows the CARB works numbering (type C, dimension series, 45 mm bore), while H 309 E identifies the sleeve execution for that bore; the combo C2209-KTN9-H309-E exists in the catalogue so that shaft (40 mm), housing (85 mm) and both components are specified with one order number. Adapter sleeve H 309 E: the sleeve sits between bearing and shaft, its tapered OD engaging the bearing's tapered bore and its cylindrical bore slipping over the 40 mm shaft. Driving the sleeve up its cone expands it on the shaft and sets the bearing's internal clearance at mounting. With a combined mass of 0.8 kg over the 40×85×23 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
- 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
- sleeve creep on the shaft seat when the sleeve was not driven to its marked travel or clearance
Selection pitfalls — read before you substitute
- Sleeve and bearing are a matched taper pair: never fit sleeve H 309 E 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 C2209-KTN9-H309-E unit — replace the sleeve with the bearing.
- Protect the 40 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 C2209-KTN9-H309-E.
- The 93/93 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 2209 KTN9 + H 309 E 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 C2209-KTN9-H309-E?
The unit is CARB bearing C 2209 KTN9 on adapter sleeve H 309 E, fitting a 40 mm shaft (1.575 in), housing bore 85 mm, bearing width 23 mm. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 93 kN, C0 93 kN, fatigue load limit Pu 10.8 kN, combined mass about 0.8 kg. Reference speed 7,500 r/min, limiting speed 11,000 r/min (bearing values).
Why does C2209-KTN9-H309-E list a 40 mm shaft size when the bearing bore is 45 mm?
The sleeve takes up the difference: the adapter sleeve H 309 E has a tapered outside that engages the bearing's 45 mm tapered bore and a cylindrical bore that seats on the 40 mm shaft. The catalogue's principal dimensions describe the mounted result — shaft seat, housing bore and bearing width — not the bearing bore alone.
Is C2209-KTN9-H309-E 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 2209 KTN9 and the sleeve H 309 E 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 C2209-KTN9-H309-E as one catalogue line keeps bearing and sleeve compatible; if ordering separately, quote both full designations including execution letters.
How is the clearance of C2209-KTN9-H309-E set at mounting?
By driving the adapter sleeve up its conical seat: the sleeve expands on the 40 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.