2211-E-2RS1KTN9 bearing: complete specifications & equivalents
The 2211-E-2RS1KTN9 is a ISO 15 radial bearing sized 55 x 100 x 25 mm (bore x OD x width) with 2RS sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 55 mm |
| Outer diameter D | 100 mm |
| Width B | 25 mm |
| Material | GCr15 |
| Seal / shield | 2RS |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | polymer (PA66 glass-fibre reinforced) |
| Basic dynamic load rating C | 27.6 kN |
| Basic static load rating C0 | 10.6 kN |
| Fatigue load limit Pu | 0.54 kN |
| Limiting speed (mechanical) | 4300 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 790 g |
| Manufacturer designation | 2211 E-2RS1KTN9 |
| 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 | 2.165 in |
|---|---|
| Outer diameter D | 3.937 in |
| Width B | 0.984 in |
| ISO bore code | 11 |
| Radial section height (D−d)/2 | 22.5 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) | 12 of 23 |
| Bore above smallest 2200-series size | 45 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 2211 | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 55×100×25 mm envelope per ISO 15; seal variant differs (2RS vs OPEN) — confirm sealing suits the duty. |
| 2211-E-2RS1TN9 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 55×100×25 mm envelope with catalogue ratings within 10 %; 2211 E-2RS1TN9 is the glass-fibre PA66 cage, two contact elastomer seals execution of this size — boundary dimensions interchangeable, only the seal/cage/bore execution differs. |
| 2211-ETN9 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 55×100×25 mm envelope, but catalogue C/C0 differ between executions (27.6/10.6 kN vs 39/13.4 kN) — boundary dimensions match, not a load-rating equivalent. |
| 2211-EKTN9 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 55×100×25 mm envelope, but catalogue C/C0 differ between executions (27.6/10.6 kN vs 39/13.4 kN) — boundary dimensions match, not a load-rating equivalent. |
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 2211-E-2RS1KTN9 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: 2211 carries code 11 = 55 mm (code × 5). Envelope 55×100×25 mm (2.165×3.937×0.984 in) with a 22.5 mm radial section height, C 27.6 kN, C0 10.6 kN and Pu 0.54 kN. SKF spells the sealed execution 2211 E-2RS1KTN9 (suffix 2RS1): two contact elastomer lips over a lifetime grease fill; the lips add drag, and no thermal reference speed is published. The E-2RS1KTN9 suffix identifies the glass-fibre-reinforced polyamide 66 cage execution. The K suffix marks a 1:12 tapered bore for direct mounting on a tapered shaft or with an adapter sleeve. Limiting speed 4300 r/min, catalogue mass 790 g.
Typical equipment & failure modes
Common applications
- material-handling equipment
- industrial electric motors
- conveyor drum and pulley shafts
- agricultural gearboxes
Known failure patterns
- fine dust or moisture passing a worn seal lip in dirty or wet duty
- grease loss when the sealed-for-life cavity is overheated with no relubrication path
- adapter-sleeve fretting when the sleeve is not locked against the shaft shoulder
- incorrect sleeve tightening that leaves the tapered bore loose or over-expanded, changing internal clearance
- fretting corrosion on a creeping shaft or housing seat
- cage damage from running beyond the limiting speed
Selection pitfalls — read before you substitute
- Self-aligning ball bearings tolerate up to roughly 2–3° of static misalignment, but the sealed 2211-E-2RS1KTN9 (2RS1) allows less — the lip seal binds before the spherical raceway does.
- Catalogue ratings for 2211-E-2RS1KTN9 (C 27.6 kN, C0 10.6 kN) are SKF figures from PUB BU/P1 17000; geometry revisions can change ratings without changing the designation, so keep the catalogue edition with the specification.
- Sealed self-aligning bearings tolerate less misalignment than open ones: keep static misalignment under roughly 1° on 2211-E-2RS1KTN9 to avoid seal-lip binding.
- The K suffix means a 1:12 tapered bore: 2211-E-2RS1KTN9 is not a drop-in for the straight-bore version — it needs a tapered shaft or an H-series adapter sleeve.
- The E-2RS1KTN9 suffix on 2211-E-2RS1KTN9 denotes a glass-fibre-reinforced polyamide 66 cage: quiet and light at the 4300 r/min limiting speed, but it softens above roughly 120 °C — check the oil temperature in hot drives.
- Mount 2211-E-2RS1KTN9 by heating the inner ring (max 120 °C) on a cylindrical bore — driving it home through the outer ring or balls brinells the raceways.
Frequently asked questions
What are the dimensions of 2211-E-2RS1KTN9?
SKF 2211 E-2RS1KTN9 measures 55 mm bore × 100 mm OD × 25 mm width (2.165 × 3.937 × 0.984 in), mass about 790 g. It has two contact rubber seals (2RS1) and a lifetime grease fill.
How does the bore code in 2211 work?
The final two digits of 2211 are bore code 11, multiplied by 5 to give 55 mm.
How heavy is 2211-E-2RS1KTN9?
Catalogue mass is 790 g for 2211 E-2RS1KTN9; seal and cage executions of the same envelope differ by a few grams.
What load can 2211-E-2RS1KTN9 take?
Catalogue values for 2211 E-2RS1KTN9: dynamic C 27.6 kN, static C0 10.6 kN, fatigue limit Pu 0.54 kN. Use C in life calculation and C0 for static checks at 55 mm bore.
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.