C2207-KTN9-H307-E bearing: complete specifications & equivalents
The C2207-KTN9-H307-E is a ISO 15 radial bearing sized 30 x 72 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 | 30 mm |
| Outer diameter D | 72 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 | 83 kN |
| Basic static load rating C0 | 80 kN |
| Fatigue load limit Pu | 9.3 kN |
| Reference speed (thermal) | 9500 rpm |
| Limiting speed (mechanical) | 13000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 590 g |
| Manufacturer designation | SKF C 2207 KTN9 + H 307 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 | 1.181 in |
|---|---|
| Outer diameter D | 2.835 in |
| Width B | 0.906 in |
| ISO bore code | 07 |
| Radial section height (D−d)/2 | 21 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) | 2 of 51 |
| Bore above smallest carb-adapter-sleeve size | 5 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C2207 | 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 C2207-KTN9-H307-E model number is decoded
The C2207-KTN9-H307-E unit pairs the 35 mm-bore CARB toroidal roller bearing C 2207 KTN9 with adapter sleeve H 307 E, so it mounts on a plain cylindrical 30 mm shaft without a precision shoulder.Numbering logic: the bearing half C 2207 KTN9 follows the CARB works numbering (type C, dimension series, 35 mm bore), while H 307 E identifies the sleeve execution for that bore; the combo C2207-KTN9-H307-E exists in the catalogue so that shaft (30 mm), housing (72 mm) and both components are specified with one order number. Adapter sleeve H 307 E: the sleeve sits between bearing and shaft, its tapered OD engaging the bearing's tapered bore and its cylindrical bore slipping over the 30 mm shaft. Driving the sleeve up its cone expands it on the shaft and sets the bearing's internal clearance at mounting. Dividing C 83 kN by the 35 mm bore gives 2.37 kN per millimetre of journal — compare this density against neighbouring CARB sizes when the 30 mm seat is fixed and the life requirement is not. Dismounting: release the locknut of H 307 E, 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 2207 KTN9 and H 307 E must be checked against the application temperature before substitution.
Typical equipment & failure modes
Common applications
- vibrating screen exciters fitted with the VE240 tolerance execution
- 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
- vibrating screen exciters fitted with the VE240 tolerance execution
Known failure patterns
- 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
- 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 307 E onto a different CARB bearing of the same bore size without verifying the execution letters — seat length and taper contact differ.
- Do not run C2207-KTN9-H307-E 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.
- Contamination discipline: the CARB bearing is open (this execution has no seals); flush the housing before mounting C2207-KTN9-H307-E and maintain the lubricant filtration — hard particles indent the toroidal raceway quickly at heavy load.
- The 83/80 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 2207 KTN9 + H 307 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 C2207-KTN9-H307-E?
The unit is CARB bearing C 2207 KTN9 on adapter sleeve H 307 E, fitting a 30 mm shaft (1.181 in), housing bore 72 mm, bearing width 23 mm. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 83 kN, C0 80 kN, fatigue load limit Pu 9.3 kN, combined mass about 0.6 kg. Reference speed 9,500 r/min, limiting speed 13,000 r/min (bearing values).
Why does C2207-KTN9-H307-E list a 30 mm shaft size when the bearing bore is 35 mm?
The sleeve takes up the difference: the adapter sleeve H 307 E has a tapered outside that engages the bearing's 35 mm tapered bore and a cylindrical bore that seats on the 30 mm shaft. The catalogue's principal dimensions describe the mounted result — shaft seat, housing bore and bearing width — not the bearing bore alone.
Is C2207-KTN9-H307-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 2207 KTN9 and the sleeve H 307 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 C2207-KTN9-H307-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 C2207-KTN9-H307-E set at mounting?
By driving the adapter sleeve up its conical seat: the sleeve expands on the 30 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.