22314-EK bearing: complete specifications & equivalents
The 22314-EK 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 | 413 kN |
| Basic static load rating C0 | 430 kN |
| Fatigue load limit Pu | 45 kN |
| Reference speed (thermal) | 3400 rpm |
| Limiting speed (mechanical) | 4500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 5350 g |
| Manufacturer designation | SKF 22314 EK |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.2 adapter-sleeve executions |
| Last verified | 2026-09-26 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.2 adapter-sleeve executions) · extracted 2026-09-26
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.2 adapter-sleeve executions); 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 & 22300-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 22300-series | 40 mm |
| Largest outer diameter in 22300-series | 320 mm |
| Width range across 22300-series | 33–108 mm |
| Bore position in 22300-series (smallest first) | 7 of 18 |
| Bore above smallest 22300-series size | 30 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 22314 | SKF | full Dimensions and internal design equivalent — standard interchange. | Tapered-bore (1:12) sleeve-mounted execution of 22314; identical ISO 15 envelope, fits H2314 adapter sleeve on a 60 mm shaft. |
| C2314 | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF CARB toroidal bearing C 2314 shares the 70×150×51 mm envelope with ratings within 10 %; it self-aligns but floats axially and cannot locate the shaft — locating/non-locating pair, not a substitute. |
| C2314-K | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF CARB toroidal bearing C 2314 K shares the 70×150×51 mm envelope with ratings within 10 %; it self-aligns but floats axially and cannot locate the shaft — locating/non-locating pair, not a substitute. |
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 22314-EK model number is decoded
For sleeve mounting on a 70 mm shaft, SKF order number SKF 22314 EK is the 1:12 tapered-bore spherical roller bearing in the 22300-series family (dimension series 23 (heavy OD, wide)); the cylindrical-bore equivalent is a separate order number, 22314. On the SKF nameplate, 22314-ek follows the ISO 15 convention: 2 for the spherical roller type, 23 for the dimension series 23 (heavy OD, wide), final digits 14 for the 70 mm bore. The K in the designation marks the 1:12 tapered bore: SKF mounts it on an H-series adapter sleeve (with KM locknut and MB lock washer) on a plain commercial-grade shaft, or on an AH withdrawal sleeve where the bearing must abut a shaft shoulder. The 45 kN Pu figure feeds the adjusted-life equation at contaminated or partial-film conditions, and the 1.04 C0/C balance shows this execution is tuned to heavy radial-plus-axial duty with misalignment tolerance. Mounting on the 1:12 taper is controlled by clearance reduction or measured axial drive-up, never by locknut torque: SKF tables give the target radial-clearance decrease for the 70 mm 22314-ek, checked with feeler gauges before and after drive-up.
Typical equipment & failure modes
Common applications
- cement-mill trunnion and drive shafts
- heavy conveyor head shafts in mining
- fan and pulley shafts that need periodic bearing removal in the field
- shafting produced to commercial tolerances, where the adapter sleeve supplies the precision seat
Known failure patterns
- raceway fatigue spalling of the sphered outer raceway after extended service above the catalogue L10 rating
- inner-ring raceway spalling from edge loading when misalignment exceeds the self-aligning recovery range
- sleeve seizure and shaft seat damage from omitting the anti-seize film between withdrawal sleeve and journal before drive-up
- surface distress and smearing when the relubrication interval is exceeded — the W33 groove is only effective if grease actually reaches the roller rows
- rolling-contact fatigue spalling after the rated L10 life is exceeded
Selection pitfalls — read before you substitute
- Mount the 70 mm bore 22314-ek by induction heating (max 120 °C) or oil injection — driving a bearing of this section home through the rollers brinells both raceways, and the damage only speaks up as vibration hours later.
- The 22300-series series at 70 mm bore (150×51 mm) is the heavy wide-section choice — highest capacity, lowest speed limit; do not substitute a 222 or 230 series in the same bore without re-checking both life and the 4,500 r/min ceiling.
- The 22314-ek and its cylindrical-bore counterpart 22314 share envelope and load ratings (413/430 kN) but are not interchangeable in a housing already fitted for direct shaft mounting — the sleeve changes the assembly stack-up.
- The adapter sleeve is selected by actual shaft diameter, not by the 70 mm nominal bearing bore: H-sleeve part numbers span a small diameter range, so two different shaft diameters can use the same 22314-ek with different sleeves.
- Shaft and housing fillets must clear the bearing chamfer so the 51 mm-wide rings seat square; use an undercut or withdrawal groove rather than an oversized radius that locks on the ring face.
- The 413/430 kN ratings are SKF catalogue values for this tapered-bore execution (SKF 22314 EK); sleeve, KM nut and MB washer are separate order numbers, and the catalogue version (SKF catalogue PUB BU/P1 17000) should travel with the mounting specification.
Frequently asked questions
What are the dimensions and catalogue data of 22314-ek?
The SKF 22314 EK is a double-row spherical roller bearing with a 1:12 tapered bore, 70 mm nominal bore, 150 mm outer diameter and 51 mm width (2.756 × 5.906 × 2.008 in) per ISO 15. From SKF catalogue PUB BU/P1 17000: C 413 kN, C0 430 kN, Pu 45 kN, reference speed 3,400 r/min, limiting speed 4,500 r/min, mass about 5350 g. It is mounted on an adapter (H) or withdrawal (AH) sleeve, not directly on the shaft.
What does the K suffix mean on 22314-ek?
K marks a 1:12 tapered bore for sleeve mounting — SKF writes EK or CCK(/W33), FAG writes -K- inside the suffix chain for sleeve mounting. The bearing seats on an H-series adapter sleeve with a KM locknut and MB lock washer (plain shaft, h9 tolerance), or on an AH withdrawal sleeve against a shaft shoulder. The rarer K30 suffix would instead mean a 1:30 taper; dimension series 40/41 spherical rollers commonly use it.
Which adapter sleeve fits the 22314-ek?
The sleeve is selected by the actual shaft diameter in millimetres, not only by the 70 mm nominal bore: SKF H-sleeve numbers each cover a small shaft-diameter range and are width-series specific (H39/H30/H31/H32 matching dimension series 39/40/31/32), and each kit bundles the sleeve, KM locknut and MB lock washer. For shoulder locations use an AH withdrawal sleeve instead. Confirm the sleeve number against the SKF catalogue PUB BU/P1 17000 mounting tables for your shaft size.
How is the 22314-ek driven up and checked?
Mounting is controlled by radial-clearance reduction or axial drive-up distance from the SKF catalogue tables for the 1:12 taper, never by locknut torque. Measure clearance with feeler gauges before and after tightening the KM nut, stop at the tabulated decrease, and lock the MB washer tab. Over-drive removes too much clearance (inner-ring cracking risk); under-drive lets the sleeve creep and fret.
What is the difference between 22314-ek and 22314?
They share the ISO 15 envelope and the same 413/430 kN ratings, but 22314-ek has the 1:12 tapered bore for sleeve mounting on a plain shaft, while 22314 has a cylindrical bore for direct mounting on a machined interference journal (typically k5 with H7 housing). They are separate order numbers, not interchangeable in the same shaft arrangement.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.2 adapter-sleeve executions on 2026-09-26. Read our editorial & correction policy.