C2209-TN9 bearing: complete specifications & equivalents
The C2209-TN9 is a ISO 15 radial bearing sized 45 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 | 45 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 | 560 g |
| Manufacturer designation | C 2209 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 | 1.772 in |
|---|---|
| Outer diameter D | 3.346 in |
| Width B | 0.906 in |
| ISO bore code | 09 |
| Radial section height (D−d)/2 | 20 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) | 4 of 21 |
| Bore above smallest C2200-series size | 15 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C2209-KTN9 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 45×85×23 mm ISO 15 envelope and equivalent catalogue C/C0; C 2209 KTN9 is the 1:12 tapered-bore K TN9 PA66-caged execution of this size — boundary dimensions interchangeable, only mounting and cage execution differ. |
| C2209-V | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 45×85×23 mm envelope, but catalogue C/C0 differ between the cylindrical-bore TN9 PA66-caged and cylindrical-bore full-complement V executions (93/93 kN vs 106/110 kN) — envelope match, not a load-rating equivalent. |
| 22209 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 45×85×23 mm envelope as the SKF spherical roller bearing SKF 22209 E, but catalogue C/C0 differ (93/93 kN vs 104/98 kN) — and the functions differ: spherical locates axially, CARB floats. Pair them; never swap one-for-one. |
| 22209-EK | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 45×85×23 mm envelope as the SKF spherical roller bearing SKF 22209 EK, but catalogue C/C0 differ (93/93 kN vs 104/98 kN) — and the functions differ: spherical locates axially, CARB floats. Pair them; never swap one-for-one. |
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-TN9 model number is decoded
C 2209 TN9 is the dimension series 22 CARB toroidal roller bearings member of the CARB range: 45 mm bore, 85 mm OD, 23 mm width, with the asymmetrical-looking toroidal roller set that defines the CARB principle. SKF builds the CARB order number from size plus execution: the bare number C 2209 is the steel-caged cylindrical-bore bearing, K (or K30) makes the bore tapered for sleeve mounting, and the cage/seal letters follow — here TN9. The open execution relies on the housing seals and lubrication system, fed through groove/hole features on the large sizes. Explorer-class heat treatment and the crowned roller profile keep edge stress down when the 45 mm shaft deflects; the 7,500 r/min reference and 11,000 r/min limiting speed are both catalogue values. Pairing rule: use the CARB bearing opposite one locating spherical or tapered bearing — never at both shaft ends — and check the locating bearing takes 100 % of the thrust, since C 2209 TN9 deliberately carries none. Seat tolerances follow the ISO 15 recommendation for the normal-load position — the 85 mm outer ring typically takes a loose housing fit to preserve float, and the rings must be supported across their full faces.
Typical equipment & failure modes
Common applications
- continuous-caster guide rolls and slab-caster segments under heat growth
- 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
Known failure patterns
- roller-end and flange smearing after lubricant starvation at the long roller contacts
- edge loading and premature spalling when the CARB position is blocked from its designed axial float
- brass cage pocket wear under marginal lubrication in the large-bore M/MB executions
- electrical erosion of raceways on VFD-driven shafts without grounding or insulation
- abrasive paste forming as dust bypasses the housing seals into the open washer set
Selection pitfalls — read before you substitute
- At 45 mm bore the small CARB executions are unusually wide (23 mm) for their 85 mm OD — confirm the housing width before substituting a standard spherical bearing of the same bore.
- Tapered-bore K executions mount on adapter sleeves (1:12) and K30 on withdrawal sleeves (1:30) — the 45 mm bore changes the sleeve family, and the drive-up procedure differs accordingly.
- Reference and limiting speeds are different limits: the 7,500 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 quoted 93/93 kN ratings belong to this exact execution (C 2209 TN9); VE240 vibrating-screen variants and sealed 2CS/2NS variants have their own figures even at the same envelope.
- Do not block the axial displacement in the drawing: housing covers, labyrinth rings and snap rings must leave the catalogue float (s) free, or the bearing silently becomes a poorly located fixed bearing.
- The 93/93 kN ratings and 560 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
Is the C 2209 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.
Which dimensions does the C 2209 TN9 have?
A C 2209 TN9 measures 45 mm bore × 85 mm outside diameter × 23 mm width (1.772 × 3.346 × 0.906 in). From SKF catalogue PUB BU/P1 17000: dynamic C 93 kN, static C0 93 kN, fatigue limit Pu 10.8 kN, reference speed 7,500 r/min, limiting speed 11,000 r/min, mass about 560 g.
What does C 2209 TN9 mean in SKF part numbering?
C marks CARB; 22 the dimension series; the size code gives 45 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.
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.