22210-EK bearing: complete specifications & equivalents
The 22210-EK is a ISO 15 radial bearing sized 50 x 90 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 | 50 mm |
| Outer diameter D | 90 mm |
| Width B | 23 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 107 kN |
| Basic static load rating C0 | 108 kN |
| Fatigue load limit Pu | 11.8 kN |
| Reference speed (thermal) | 7000 rpm |
| Limiting speed (mechanical) | 9500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 900 g |
| Manufacturer designation | SKF 22210 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 & 22200-series range
| Bore d | 1.969 in |
|---|---|
| Outer diameter D | 3.543 in |
| Width B | 0.906 in |
| ISO bore code | 10 |
| Radial section height (D−d)/2 | 20 mm |
| Smallest bore in 22200-series | 25 mm |
| Largest outer diameter in 22200-series | 290 mm |
| Width range across 22200-series | 18–80 mm |
| Bore position in 22200-series (smallest first) | 6 of 22 |
| Bore above smallest 22200-series size | 25 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 22210 | SKF | full Dimensions and internal design equivalent — standard interchange. | Tapered-bore (1:12) sleeve-mounted execution of 22210; identical ISO 15 envelope, fits H310 adapter sleeve on a 45 mm shaft. |
| C2210-TN9 | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF CARB toroidal bearing C 2210 TN9 shares the 50×90×23 mm envelope with ratings within 10 %; it self-aligns but floats axially and cannot locate the shaft — locating/non-locating pair, not a substitute. |
| C2210-KTN9 | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF CARB toroidal bearing C 2210 KTN9 shares the 50×90×23 mm envelope with ratings within 10 %; it self-aligns but floats axially and cannot locate the shaft — locating/non-locating pair, not a substitute. |
| C2210-V | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF CARB toroidal bearing C 2210 V shares the 50×90×23 mm envelope but catalogue C/C0 differ (114/122 kN vs 107/108 kN); it floats axially and cannot locate the shaft — pair, 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 22210-EK model number is decoded
In SKF catalogue PUB BU/P1 17000, 22210-ek denotes the tapered-bore version (K suffix, taper 1:12) of the 22200-series spherical roller bearing: dimensioned 50×90×23 mm, it seats on an adapter or withdrawal sleeve rather than directly on a machined journal. Numbering ties the bearing to its envelope: 22210-ek means spherical-roller type, dimension series 22, 50 mm bore — which is why the 90×23 mm outline swaps dimensionally with other ISO 15 bearings of the same code. Sleeve mounting is why the K execution exists: a plain h9-tolerance shaft is enough because the adapter sleeve supplies the precision seat, and the bearing is removable without pulling over an interference journal — a separate order number from the cylindrical-bore bearing, never a field conversion. The 11.8 kN Pu figure feeds the adjusted-life equation at contaminated or partial-film conditions, and the 1.01 C0/C balance shows this execution is tuned to heavy radial-plus-axial duty with misalignment tolerance. Because driving up the 1:12 taper consumes radial clearance, K executions are commonly ordered with C3 initial clearance so the residual running clearance after mounting matches the cylindrical-bore 22210 on an interference seat.
Typical equipment & failure modes
Common applications
- continuous-caster guide rolls
- extruder gearbox shafts
- split-housing plummer block arrangements with bearings swapped in situ
- heavy crusher and screen shafts mounted and dismounted with hydraulic nuts
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
- false brinelling on standby machines exposed to external vibration
Selection pitfalls — read before you substitute
- On this 50 mm bore, an interference inner-ring fit consumes a large share of the CN clearance; specify C3 when the inner ring rotates hot, and verify residual clearance after mounting rather than trusting the catalogue clearance class.
- The 22200-series series at 50 mm bore (90×23 mm) is the general-purpose spherical roller envelope; stepping up to 223 adds capacity and width, stepping to 230 trims the OD — neither is interchangeable without re-checking shoulders and speed.
- The adapter sleeve is selected by actual shaft diameter, not by the 50 mm nominal bearing bore: H-sleeve part numbers span a small diameter range, so two different shaft diameters can use the same 22210-ek with different sleeves.
- The 22210-ek and its cylindrical-bore counterpart 22210 share envelope and load ratings (107/108 kN) but are not interchangeable in a housing already fitted for direct shaft mounting — the sleeve changes the assembly stack-up.
- The 22210-ek shares its ISO 15 envelope across brands, but internal geometry differs — SKF load ratings in this row are 107/108 kN; another maker's same-size bearing may rate higher or lower, so do not interchange on envelope alone.
- The 107/108 kN ratings are SKF catalogue values for this tapered-bore execution (SKF 22210 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 22210-ek?
The SKF 22210 EK is a double-row spherical roller bearing with a 1:12 tapered bore, 50 mm nominal bore, 90 mm outer diameter and 23 mm width (1.969 × 3.543 × 0.906 in) per ISO 15. From SKF catalogue PUB BU/P1 17000: C 107 kN, C0 108 kN, Pu 11.8 kN, reference speed 7,000 r/min, limiting speed 9,500 r/min, mass about 900 g. It is mounted on an adapter (H) or withdrawal (AH) sleeve, not directly on the shaft.
What does the K suffix mean on 22210-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 22210-ek?
The sleeve is selected by the actual shaft diameter in millimetres, not only by the 50 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 22210-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 22210-ek and 22210?
They share the ISO 15 envelope and the same 107/108 kN ratings, but 22210-ek has the 1:12 tapered bore for sleeve mounting on a plain shaft, while 22210 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.