C2206-TN9 bearing: complete specifications & equivalents
The C2206-TN9 is a ISO 15 radial bearing sized 30 x 62 x 20 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 | 62 mm |
| Width B | 20 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | polymer (PA66 glass-fibre reinforced) |
| Basic dynamic load rating C | 69.5 kN |
| Basic static load rating C0 | 62 kN |
| Fatigue load limit Pu | 7.2 kN |
| Reference speed (thermal) | 11000 rpm |
| Limiting speed (mechanical) | 15000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 280 g |
| Manufacturer designation | C 2206 TN9 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.1 CARB toroidal roller bearings |
| Last verified | 2026-09-27 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.1 CARB toroidal roller bearings) · extracted 2026-09-27
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.1 CARB toroidal roller bearings); 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 & C2200-series range
| Bore d | 1.181 in |
|---|---|
| Outer diameter D | 2.441 in |
| Width B | 0.787 in |
| ISO bore code | 06 |
| Radial section height (D−d)/2 | 16 mm |
| Smallest bore in C2200-series | 30 mm |
| Largest outer diameter in C2200-series | 400 mm |
| Width range across C2200-series | 20–108 mm |
| Bore position in C2200-series (smallest first) | 1 of 21 |
| Bore above smallest C2200-series size | 0 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C2206-KTN9 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 30×62×20 mm ISO 15 envelope and equivalent catalogue C/C0; C 2206 KTN9 is the 1:12 tapered-bore K TN9 PA66-caged execution of this size — boundary dimensions interchangeable, only mounting and cage execution differ. |
| C2206-V | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 30×62×20 mm envelope, but catalogue C/C0 differ between the cylindrical-bore TN9 PA66-caged and cylindrical-bore full-complement V executions (69.5/62 kN vs 76.5/71 kN) — envelope match, not a load-rating equivalent. |
| 22206 | SKF | full Dimensions and internal design equivalent — standard interchange. | Envelope-identical (30×62×20 mm) SKF spherical roller bearing SKF 22206 E with ratings within 10 % — not a drop-in substitute: SKF 22206 E locates the shaft axially while the CARB bearing must float; the two are designed to run as a locating/non-locating pair. |
| 22206-EK | SKF | full Dimensions and internal design equivalent — standard interchange. | Envelope-identical (30×62×20 mm) SKF spherical roller bearing SKF 22206 EK with ratings within 10 % — not a drop-in substitute: SKF 22206 EK locates the shaft axially while the CARB bearing must float; the two are designed to run as a locating/non-locating pair. |
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 C2206-TN9 model number is decoded
The CARB bearing C 2206 TN9 combines the self-aligning behaviour of a spherical roller bearing with the axial freedom of a cylindrical bearing in one 30 mm bore, 62 mm outside diameter, 20 mm wide unit rated 69.5 kN dynamic. Reading the code: C marks the CARB toroidal family, the first two digits (22) identify the ISO dimension series and the last two (06) encode the 30 mm bore; suffixes describe bore and execution. The TN9 suffix marks a glass fibre reinforced PA66 cage: lower friction and quieter than the full-complement V execution, with a 11,000 r/min reference speed, the usual choice for continuous-duty fans and paper rolls. The 280 g mass over the 30×62×20 mm envelope yields about 2.32 kN dynamic per millimetre of bore — the long toroidal rollers give this family its radial capacity density. Mounting: slide the bearing onto the 30 mm seat or heat it (max 120 °C) and seat it square; never press through the 20 mm roller set, and leave the free-end housing shoulder clear so axial float is unrestricted.
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
- paper machine drying cylinders and calender rolls with long, thermally expanding shafts
Known failure patterns
- roller-end and flange smearing after lubricant starvation at the long roller contacts
- thermal preloading when a shaft is located at both ends and growth has nowhere to go
- PA66 cage (TN9) softening when the sustained temperature passes the polymer limit
- rolling-contact fatigue spalling after the catalogue L10 life is exhausted
- grease churning and overheating when a high-speed thrust position is over-packed
Selection pitfalls — read before you substitute
- At 30 mm bore the small CARB executions are unusually wide (20 mm) for their 62 mm OD — confirm the housing width before substituting a standard spherical bearing of the same bore.
- Envelope-identical spherical roller bearings (same ISO 15 d×D×B) are not drop-in equivalents — they locate the shaft axially, while C 2206 TN9 must float; the two are designed to be used as a pair.
- Never use C 2206 TN9 as the locating bearing: it carries no axial load by design — the arrangement needs a separate locating spherical, tapered or angular bearing facing the thrust.
- Tapered-bore K executions mount on adapter sleeves (1:12) and K30 on withdrawal sleeves (1:30) — the 30 mm bore changes the sleeve family, and the drive-up procedure differs accordingly.
- Reference and limiting speeds are different limits: the 11,000 r/min reference speed is the thermal criterion under load, the limiting value is the mechanical ceiling; observe the reference under load unless the arrangement calculation says otherwise.
- The 69.5/62 kN ratings and 280 g mass are SKF catalogue values transcribed from ch. 10.1 of PUB BU/P1 17000 (PDF table page 858); mounting data — axial displacement (s) and seating details — appears in the running text because the structured record carries the boundary envelope only.
Frequently asked questions
What does C 2206 TN9 mean in SKF part numbering?
C marks CARB; 22 the dimension series; the size code gives 30 mm bore; TN9 is the execution (cylindrical bore for direct shaft fitting, TN9 glass-fibre PA66 cage). The envelope follows ISO 15 and matches spherical roller bearing outlines, but the functions differ.
Why is C 2206 TN9 used opposite a spherical roller bearing?
The spherical bearing locates the shaft and takes thrust; the CARB bearing at the other end self-aligns but floats, absorbing thermal expansion without inducing axial load. The pair is standard on paper machine drying cylinders and long caster rolls.
Is the C 2206 TN9 sealed?
No, it is an open execution relying on the housing seals; relubrication follows the groove/hole features of the size.
What fails first on a misapplied CARB bearing?
Blocking the designed axial float — clamping the free end or locating both shaft ends — turns thermal growth into edge loading and spalls the toroidal raceways. Cage damage and ordinary fatigue follow overload or dry running.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.1 CARB toroidal roller bearings on 2026-09-27. Read our editorial & correction policy.