1213-ETN9 bearing: complete specifications & equivalents
The 1213-ETN9 is a ISO 15 radial bearing sized 65 x 120 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 | 65 mm |
| Outer diameter D | 120 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 | 35.1 kN |
| Basic static load rating C0 | 14 kN |
| Fatigue load limit Pu | 0.72 kN |
| Reference speed (thermal) | 11000 rpm |
| Limiting speed (mechanical) | 7000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1150 g |
| Manufacturer designation | 1213 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 & 1200-series range
| Bore d | 2.559 in |
|---|---|
| Outer diameter D | 4.724 in |
| Width B | 0.906 in |
| ISO bore code | 13 |
| Radial section height (D−d)/2 | 27.5 mm |
| Smallest bore in 1200-series | 6 mm |
| Largest outer diameter in 1200-series | 230 mm |
| Width range across 1200-series | 6–154 mm |
| Bore position in 1200-series (smallest first) | 19 of 32 |
| Bore above smallest 1200-series size | 59 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 1213 | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 65×120×23 mm envelope per ISO 15; catalogue load ratings differ by >10% — re-rate the application before substituting. |
| 1213-EKTN9 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 65×120×23 mm envelope with catalogue ratings within 10 %; 1213 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 1213-ETN9 model number is decoded
The 12xx series is the light/normal-section self-aligning ball bearing (ISO dimension series 02). the last two digits encode the bore: 1213 carries code 13 = 65 mm (code × 5). Envelope 65×120×23 mm (2.559×4.724×0.906 in) with a 27.5 mm radial section height, C 35.1 kN, C0 14 kN and Pu 0.72 kN. The open 1213 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 65 mm shaft. Reference (thermal) speed 11000 r/min, limiting speed 7000 r/min, catalogue mass 1150 g.
Typical equipment & failure modes
Common applications
- industrial fans and blowers
- woodworking machinery
- pump shafts with mild misalignment
- material-handling equipment
Known failure patterns
- lubricant starvation where no regreasing interval is maintained
- contamination wear when the open arrangement is used without adequate external sealing
- 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 1213-ETN9 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 1213-ETN9 chamfer so the 23 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
- The ETN9 suffix on 1213-ETN9 denotes a glass-fibre-reinforced polyamide 66 cage: quiet and light at the 7000 r/min limiting speed, but it softens above roughly 120 °C — check the oil temperature in hot drives.
- The spherical outer raceway lets 1213-ETN9 tolerate shaft deflection, but it does not increase thrust capacity — combined loads still need an angular-contact or deep-groove bearing.
- Fillet radii must clear the 1213-ETN9 chamfer so the 23 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 1213-ETN9 (2RS1) allows less — the lip seal binds before the spherical raceway does.
Frequently asked questions
What are the dimensions of 1213-ETN9?
SKF 1213 ETN9 measures 65 mm bore × 120 mm OD × 23 mm width (2.559 × 4.724 × 0.906 in), mass about 1150 g. It is open, with no shields or seals.
How does the bore code in 1213 work?
The final two digits of 1213 are bore code 13, multiplied by 5 to give 65 mm.
Which fits should I use for 1213-ETN9?
With a rotating inner ring use roughly k5 on the shaft and H7 in the 120 mm housing; reverse the interference if the outer ring rotates.
How heavy is 1213-ETN9?
Catalogue mass is 1150 g for 1213 ETN9; 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.