C2314 bearing: complete specifications & equivalents
The C2314 is a ISO 15 radial bearing sized 70 x 150 x 51 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 | 150 mm |
| Width B | 51 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 405 kN |
| Basic static load rating C0 | 430 kN |
| Fatigue load limit Pu | 49 kN |
| Reference speed (thermal) | 3800 rpm |
| Limiting speed (mechanical) | 5000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 4300 g |
| Manufacturer designation | C 2314 |
| 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 & C2300-series range
| Bore d | 2.756 in |
|---|---|
| Outer diameter D | 5.906 in |
| Width B | 2.008 in |
| ISO bore code | 14 |
| Radial section height (D−d)/2 | 40 mm |
| Smallest bore in C2300-series | 70 mm |
| Largest outer diameter in C2300-series | 280 mm |
| Width range across C2300-series | 51–93 mm |
| Bore position in C2300-series (smallest first) | 1 of 8 |
| Bore above smallest C2300-series size | 0 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C2314-K | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 70×150×51 mm ISO 15 envelope and equivalent catalogue C/C0; C 2314 K is the 1:12 tapered-bore K steel-caged execution of this size — boundary dimensions interchangeable, only mounting and cage execution differ. |
| 22314 | SKF | full Dimensions and internal design equivalent — standard interchange. | Envelope-identical (70×150×51 mm) SKF spherical roller bearing SKF 22314 E with ratings within 10 % — not a drop-in substitute: SKF 22314 E locates the shaft axially while the CARB bearing must float; the two are designed to run as a locating/non-locating pair. |
| 22314-EK | SKF | full Dimensions and internal design equivalent — standard interchange. | Envelope-identical (70×150×51 mm) SKF spherical roller bearing SKF 22314 EK with ratings within 10 % — not a drop-in substitute: SKF 22314 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 C2314 model number is decoded
In SKF catalogue PUB BU/P1 17000, C 2314 denotes a toroidal roller bearing whose 51 mm long rollers crown at both ends: the contact accepts angular misalignment while the ring positions float, which is why CARB bearings are specified at the free shaft end. The designation C 2314 separates into C (CARB), 23 (dimension series), 14 (70 mm bore) and the bare number (cylindrical bore for direct shaft fitting, pressed steel cage); envelope 70×150×51 mm follows the ISO 15 plan. The cylindrical 70 mm bore mounts directly on a machined seat; the outer ring takes a loose housing fit so the bearing can float axially. The same size is listed in both bore executions, and the boundary dimensions 70×150×51 mm are identical — only the mounting method changes. Float capacity is a selection criterion: the catalogue lists the permissible axial displacement (s) for the 51 mm wide set; size the free-end housing so thermal growth stays within it, not just inside the overall width. Open executions accept relubrication — route it through the outer-ring groove on sizes that have one and purge stale grease at service intervals. Grease through the annular groove features where provided; on open executions feed lubricant past the long roller set at assembly, since the 51 mm wide cavity does not fill itself.
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
- raceway spalling once the catalogue L10 life is exceeded or after sustained overload
- 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
- brinelling of washer raceways from impact or mounting force applied through the rolling elements
- 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 (51 mm) for their 150 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 2314 must float; the two are designed to be used as a pair.
- Never use C 2314 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 405/430 kN ratings and 4300 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
How is C 2314 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 51 mm roller set.
What are the dimensions and ratings of the C 2314?
A C 2314 measures 70 mm bore × 150 mm outside diameter × 51 mm width (2.756 × 5.906 × 2.008 in). From SKF catalogue PUB BU/P1 17000: dynamic C 405 kN, static C0 430 kN, fatigue limit Pu 49 kN, reference speed 3,800 r/min, limiting speed 5,000 r/min, mass about 4300 g.
Can a CARB bearing like C 2314 locate the shaft axially?
No — that is the defining feature. C 2314 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 2314 designation read?
C = CARB toroidal family; 23 = dimension series; 14 = 70 mm bore (code 14 × 5); suffix the bare number selects cylindrical bore for direct shaft fitting, pressed steel cage. K is a 1:12 tapered bore for an adapter sleeve, K30 a 1:30 bore for a withdrawal sleeve.
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.