1200-ETN9 bearing: complete specifications & equivalents
The 1200-ETN9 is a ISO 15 radial bearing sized 10 x 30 x 9 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 10 mm |
| Outer diameter D | 30 mm |
| Width B | 9 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | polymer (PA66 glass-fibre reinforced) |
| Basic dynamic load rating C | 5.53 kN |
| Basic static load rating C0 | 1.18 kN |
| Fatigue load limit Pu | 0.061 kN |
| Reference speed (thermal) | 56000 rpm |
| Limiting speed (mechanical) | 36000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 34 g |
| Manufacturer designation | 1200 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 | 0.394 in |
|---|---|
| Outer diameter D | 1.181 in |
| Width B | 0.354 in |
| ISO bore code | 00 |
| Radial section height (D−d)/2 | 10 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) | 5 of 32 |
| Bore above smallest 1200-series size | 4 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 1200 | NTN | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
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 1200-ETN9 model number is decoded
The 12xx series is the light/normal-section self-aligning ball bearing (ISO dimension series 02). bore code 00 follows the 10/12/15/17 mm exception table, so 1200 fits a 10 mm shaft. Envelope 10×30×9 mm (0.394×1.181×0.354 in) with a 10.0 mm radial section height, C 5.53 kN, C0 1.18 kN and Pu 0.061 kN. The open 1200 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 10 mm shaft. Reference (thermal) speed 56000 r/min, limiting speed 36000 r/min, catalogue mass 34 g.
Typical equipment & failure modes
Common applications
- fan and blower shafts
- woodworking machine spindles
- light gearbox layshafts
- food-processing conveyors
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 1200-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 1200-ETN9 chamfer so the 9 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
- The ETN9 suffix on 1200-ETN9 denotes a glass-fibre-reinforced polyamide 66 cage: quiet and light at the 36000 r/min limiting speed, but it softens above roughly 120 °C — check the oil temperature in hot drives.
- Catalogue ratings for 1200-ETN9 (C 5.53 kN, C0 1.18 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.
- Mount 1200-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.
- The fatigue load limit is 0.061 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
Frequently asked questions
What are the dimensions of 1200-ETN9?
SKF 1200 ETN9 measures 10 mm bore × 30 mm OD × 9 mm width (0.394 × 1.181 × 0.354 in), mass about 34 g. It is open, with no shields or seals.
How does the bore code in 1200 work?
Codes 00–03 follow the exception table (10, 12, 15, 17 mm): 1200 fits a 10 mm shaft. Code × 5 starts at code 04.
What load can 1200-ETN9 take?
Catalogue values for 1200 ETN9: dynamic C 5.53 kN, static C0 1.18 kN, fatigue limit Pu 0.061 kN. Use C in life calculation and C0 for static checks at 10 mm bore.
What is the speed rating of 1200-ETN9?
SKF lists a 56000 r/min thermal reference speed and a 36000 r/min mechanical limiting speed for 1200 ETN9; real limits also depend on lubrication and fits.
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.