2210-ETN9 bearing: complete specifications & equivalents
The 2210-ETN9 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 | polymer (PA66 glass-fibre reinforced) |
| Basic dynamic load rating C | 33.8 kN |
| Basic static load rating C0 | 11.2 kN |
| Fatigue load limit Pu | 0.57 kN |
| Reference speed (thermal) | 14000 rpm |
| Limiting speed (mechanical) | 9500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 600 g |
| Manufacturer designation | 2210 ETN9 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018) |
| Last verified | 2026-09-27 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-27
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); 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 & 2200-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 2200-series | 10 mm |
| Largest outer diameter in 2200-series | 200 mm |
| Width range across 2200-series | 14–53 mm |
| Bore position in 2200-series (smallest first) | 11 of 23 |
| Bore above smallest 2200-series size | 40 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 2210 | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 50×90×23 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 2210-E-2RS1TN9 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 50×90×23 mm envelope, but catalogue C/C0 differ between executions (33.8/11.2 kN vs 22.9/8.15 kN) — boundary dimensions match, not a load-rating equivalent. |
| 2210-E-2RS1KTN9 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 50×90×23 mm envelope, but catalogue C/C0 differ between executions (33.8/11.2 kN vs 22.9/8.15 kN) — boundary dimensions match, not a load-rating equivalent. |
| 2210-EKTN9 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 50×90×23 mm envelope with catalogue ratings within 10 %; 2210 EKTN9 is the glass-fibre PA66 cage, open arrangement, tapered bore execution of this size — boundary dimensions interchangeable, only the seal/cage/bore execution differs. |
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 2210-ETN9 model number is decoded
The 22xx series is the wide light-section self-aligning ball bearing (ISO dimension series 22). the last two digits encode the bore: 2210 carries code 10 = 50 mm (code × 5). Envelope 50×90×23 mm (1.969×3.543×0.906 in) with a 20.0 mm radial section height, C 33.8 kN, C0 11.2 kN and Pu 0.57 kN. The open 2210 ETN9 carries no shields or seals and relies on application lubrication and external sealing. The ETN9 suffix identifies the glass-fibre-reinforced polyamide 66 cage execution. The bore is cylindrical (straight), for a press-fit on a 50 mm shaft. Reference (thermal) speed 14000 r/min, limiting speed 9500 r/min, catalogue mass 600 g.
Typical equipment & failure modes
Common applications
- agricultural gearboxes
- textile machinery drives
- industrial fans and blowers
- woodworking machinery
Known failure patterns
- lubricant starvation where no regreasing interval is maintained
- contamination wear when the open arrangement is used without adequate external sealing
- cage damage from running beyond the limiting speed
- raceway smearing under marginal lubrication at start-up
Selection pitfalls — read before you substitute
- Assign interference to the rotating ring: on a 50 mm rotating shaft use a k5 seat with an H7 housing; reverse the logic if the outer ring rotates.
- At 50 mm bore, C3 clearance is the safe choice when interference fits plus temperature rise consume the CN clearance; a hot tight bearing with no residual clearance fails fast.
- The ETN9 suffix on 2210-ETN9 denotes a glass-fibre-reinforced polyamide 66 cage: quiet and light at the 9500 r/min limiting speed, but it softens above roughly 120 °C — check the oil temperature in hot drives.
- The fatigue load limit is 0.57 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
- At 50 mm bore, C3 clearance is the safe choice when interference fits plus temperature rise consume the CN clearance; a hot tight bearing with no residual clearance fails fast.
- The spherical outer raceway lets 2210-ETN9 tolerate shaft deflection, but it does not increase thrust capacity — combined loads still need an angular-contact or deep-groove bearing.
Frequently asked questions
What are the dimensions of 2210-ETN9?
SKF 2210 ETN9 measures 50 mm bore × 90 mm OD × 23 mm width (1.969 × 3.543 × 0.906 in), mass about 600 g. It is open, with no shields or seals.
How does the bore code in 2210 work?
The final two digits of 2210 are bore code 10, multiplied by 5 to give 50 mm.
How much misalignment can 2210-ETN9 tolerate?
Self-aligning ball bearings tolerate roughly 2–3° of static misalignment for open executions; sealed 2RS1 variants like 2210-ETN9 allow less (about 1°) because the seal lip binds first.
Can 2210-ETN9 take axial load?
A self-aligning ball bearing can carry some axial load in addition to radial load, but its axial capacity is lower than an angular-contact bearing of the same envelope. Use it where misalignment, not thrust, is the main requirement.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018) on 2026-09-27. Read our editorial & correction policy.