11206-TN9 bearing: complete specifications & equivalents
The 11206-TN9 is a ISO 15 radial bearing sized 30 x 62 x 16 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 30 mm |
| Outer diameter D | 62 mm |
| Width B | 16 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | polymer (PA66 glass-fibre reinforced) |
| Basic dynamic load rating C | 15.6 kN |
| Basic static load rating C0 | 4.65 kN |
| Fatigue load limit Pu | 0.24 kN |
| Limiting speed (mechanical) | 6700 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 350 g |
| Manufacturer designation | 11206 TN9 |
| 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 & 11200-series range
| Bore d | 1.181 in |
|---|---|
| Outer diameter D | 2.441 in |
| Width B | 0.63 in |
| ISO bore code | 06 |
| Radial section height (D−d)/2 | 16 mm |
| Smallest bore in 11200-series | 20 mm |
| Largest outer diameter in 11200-series | 110 mm |
| Width range across 11200-series | 14–22 mm |
| Bore position in 11200-series (smallest first) | 3 of 8 |
| Bore above smallest 11200-series size | 10 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 1206-ETN9 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 30×62×16 mm envelope with catalogue ratings within 10 %; 1206 ETN9 is the glass-fibre PA66 cage, open arrangement execution of this size — boundary dimensions interchangeable, only the seal/cage/bore execution differs. |
| 1206-EKTN9 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 30×62×16 mm envelope with catalogue ratings within 10 %; 1206 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 11206-TN9 model number is decoded
The 112xx series is SKF's extended-inner-ring self-aligning ball bearing: the inner ring is wider than the outer, giving a longer shaft seat for locating-bearing duty. the last two digits encode the bore: 11206 carries code 06 = 30 mm (code × 5). Envelope 30×62×16 mm (1.181×2.441×0.63 in) with a 16.0 mm radial section height, C 15.6 kN, C0 4.65 kN and Pu 0.24 kN. The open 11206 TN9 carries no shields or seals and relies on application lubrication and external sealing. The TN9 suffix identifies the glass-fibre-reinforced polyamide 66 cage execution. The bore is cylindrical (straight), for a press-fit on a 30 mm shaft. Limiting speed 6700 r/min, catalogue mass 350 g.
Typical equipment & failure modes
Common applications
- shafts with a single locating bearing against a shoulder
- agricultural machinery driven shafts
- fan shafts with thermal expansion take-up
- woodworking machine cutter shafts
Known failure patterns
- lubricant starvation where no regreasing interval is maintained
- contamination wear when the open arrangement is used without adequate external sealing
- uneven loading of the two ball rows if the extended ring is not seated square on the shaft
- the extended inner ring acting as a thrust collar: never use it to carry axial load — locate with a shaft shoulder or locknut instead
- electrical pitting in VFD-driven motors without shaft grounding
- excessive misalignment loading one ball row heavily and spalling it early
Selection pitfalls — read before you substitute
- Mount 11206-TN9 by heating the inner ring (max 120 °C) on a cylindrical bore — driving it home through the outer ring or balls brinells the raceways.
- Fillet radii must clear the 11206-TN9 chamfer so the 16 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
- The 112xx extended inner ring of 11206-TN9 gives a wider shaft seat but the same 30×62×16 mm envelope as a 12xx of the same bore — the outer ring is interchangeable, the inner is not.
- The TN9 suffix on 11206-TN9 denotes a glass-fibre-reinforced polyamide 66 cage: quiet and light at the 6700 r/min limiting speed, but it softens above roughly 120 °C — check the oil temperature in hot drives.
- Fillet radii must clear the 11206-TN9 chamfer so the 16 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
- Self-aligning ball bearings tolerate up to roughly 2–3° of static misalignment, but the sealed 11206-TN9 (2RS1) allows less — the lip seal binds before the spherical raceway does.
Frequently asked questions
What are the dimensions of 11206-TN9?
SKF 11206 TN9 measures 30 mm bore × 62 mm OD × 16 mm width (1.181 × 2.441 × 0.63 in), mass about 350 g. It is open, with no shields or seals.
How does the bore code in 11206 work?
The final two digits of 11206 are bore code 06, multiplied by 5 to give 30 mm.
Which fits should I use for 11206-TN9?
With a rotating inner ring use roughly k5 on the shaft and H7 in the 62 mm housing; reverse the interference if the outer ring rotates.
How heavy is 11206-TN9?
Catalogue mass is 350 g for 11206 TN9; seal and cage executions of the same envelope differ by a few grams.
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.