C2214-TN9 bearing: complete specifications & equivalents
The C2214-TN9 is a ISO 15 radial bearing sized 70 x 125 x 31 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 70 mm |
| Outer diameter D | 125 mm |
| Width B | 31 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | polymer (PA66 glass-fibre reinforced) |
| Basic dynamic load rating C | 186 kN |
| Basic static load rating C0 | 196 kN |
| Fatigue load limit Pu | 22.8 kN |
| Reference speed (thermal) | 5000 rpm |
| Limiting speed (mechanical) | 7000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1500 g |
| Manufacturer designation | C 2214 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 | 2.756 in |
|---|---|
| Outer diameter D | 4.921 in |
| Width B | 1.22 in |
| ISO bore code | 14 |
| Radial section height (D−d)/2 | 27.5 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) | 9 of 21 |
| Bore above smallest C2200-series size | 40 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C2214-KTN9 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 70×125×31 mm ISO 15 envelope and equivalent catalogue C/C0; C 2214 KTN9 is the 1:12 tapered-bore K TN9 PA66-caged execution of this size — boundary dimensions interchangeable, only mounting and cage execution differ. |
| C2214-V | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 70×125×31 mm envelope, but catalogue C/C0 differ between the cylindrical-bore TN9 PA66-caged and cylindrical-bore full-complement V executions (186/196 kN vs 212/228 kN) — envelope match, not a load-rating equivalent. |
| 22214 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 70×125×31 mm envelope as the SKF spherical roller bearing SKF 22214 E, but catalogue C/C0 differ (186/196 kN vs 213/228 kN) — and the functions differ: spherical locates axially, CARB floats. Pair them; never swap one-for-one. |
| 22214-EK | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 70×125×31 mm envelope as the SKF spherical roller bearing SKF 22214 EK, but catalogue C/C0 differ (186/196 kN vs 213/228 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 C2214-TN9 model number is decoded
The CARB bearing C 2214 TN9 combines the self-aligning behaviour of a spherical roller bearing with the axial freedom of a cylindrical bearing in one 70 mm bore, 125 mm outside diameter, 31 mm wide unit rated 186 kN dynamic. In C 2214 TN9 the 22 dimension series fixes the 125 mm OD and 31 mm width around the 70 mm bore (code 14 × 5); the suffix TN9 then selects the cylindrical bore for direct shaft fitting, TN9 glass-fibre PA66 cage. The TN9 suffix marks a glass fibre reinforced PA66 cage: lower friction and quieter than the full-complement V execution, with a 5,000 r/min reference speed, the usual choice for continuous-duty fans and paper rolls. 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 2214 TN9 deliberately carries none. After fitting, confirm the inner ring can be pushed axially by hand through the catalogue displacement range; a ring that will not slide means the position is locked and will preload in service.
Typical equipment & failure modes
Common applications
- winder and reel drums in paper and steel strip plants
- paper machine drying cylinders and calender rolls with long, thermally expanding shafts
- continuous-caster guide rolls and slab-caster segments under heat growth
- vibrating screen exciters fitted with the VE240 tolerance execution
Known failure patterns
- raceway spalling once the catalogue L10 life is exceeded or after sustained overload
- 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
- condensation pitting in machines that run intermittently in humid environments
- abrasive paste forming as dust bypasses the housing seals into the open washer set
Selection pitfalls — read before you substitute
- At 70 mm bore the small CARB executions are unusually wide (31 mm) for their 125 mm OD — confirm the housing width before substituting a standard spherical bearing of the same bore.
- 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.
- Envelope-identical spherical roller bearings (same ISO 15 d×D×B) are not drop-in equivalents — they locate the shaft axially, while C 2214 TN9 must float; the two are designed to be used as a pair.
- Never use C 2214 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 70 mm bore changes the sleeve family, and the drive-up procedure differs accordingly.
- The 186/196 kN ratings and 1500 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
Can a CARB bearing like C 2214 TN9 locate the shaft axially?
No — that is the defining feature. C 2214 TN9 deliberately allows the inner ring to float axially inside the outer ring while the toroidal rollers self-align. It must be paired with a separate locating bearing (spherical, tapered or angular contact) that takes 100 % of the thrust.
How is the C 2214 TN9 designation read?
C = CARB toroidal family; 22 = dimension series; 14 = 70 mm bore (code 14 × 5); suffix TN9 selects cylindrical bore for direct shaft fitting, TN9 glass-fibre PA66 cage. K is a 1:12 tapered bore for an adapter sleeve, K30 a 1:30 bore for a withdrawal sleeve.
What is the difference between V and TN9 CARB executions?
V is the full-complement execution with no cage — more rollers, higher C (186 kN here) but a lower speed ceiling and no thermal reference speed. TN9 is the glass-fibre PA66 caged execution, faster and quieter at somewhat lower load. C 2214 TN9 is the cylindrical bore for direct shaft fitting, TN9 glass-fibre PA66 cage.
How is C 2214 TN9 mounted?
Slide or heat (max 120 °C) the bearing onto the 70 mm seat, give the outer ring a loose housing fit, leave the float travel unobstructed, and never press through the 31 mm roller set.
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.