1205 Self-Aligning Ball Bearing (25x52x15mm)
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Bearing dimensions and basic technical information.
Manufacturer Ratings
Load-rating symbols are printed as each manufacturer writes them in its own catalogue, so the same quantity can carry a different symbol from brand to brand.
| Brand | Dynamic Load Rating | Static Load Rating | Fatigue Load Limit |
|---|---|---|---|
| SKF 1205 ETN9 | 14.3 kN | 4 kN | 0.21 kN |
| NSK 1205 | 13.4 kN | 3.3 kN | — |
| Schaeffler (FAG) 1205-TVH | 12.3 kN | 3.3 kN | 0.209 kN |
| NTN 1205S | 12.2 kN | 3.3 kN | 0.13 kN |
Speed Ratings
Speed limits depend on sealing and lubrication, and definitions differ by manufacturer. Contact-sealed variants are normally greased for life and run slower. Always confirm the exact variant in the manufacturer's table.
| Brand | Grease open / shielded | Oil open | Reference | Limiting |
|---|---|---|---|---|
| SKF 1205 ETN9 | — | — | 28,000 r/min | 18,000 r/min |
| NSK 1205 | 12,000 r/min | 14,000 r/min | — | — |
| Schaeffler (FAG) 1205-TVH | — | — | 13,400 r/min | 15,500 r/min |
| NTN 1205S | 12,000 r/min | 14,000 r/min | — | — |
References
- SKF — SKF Group, Rolling Bearings, PUB BU/P1 17000/1 EN, Oct. 2018.
- NSK — NSK Ltd., Rolling Bearings for Industrial Machinery, CAT. No. E1103, Tokyo, Japan, Jan. 2025.
- Schaeffler (FAG) — Schaeffler Technologies AG & Co. KG, Rolling Bearings, HR 1, Herzogenaurach, Germany, Feb. 2025.
- NTN — NTN Corporation, Ball and Roller Bearings, CAT. No. 2203-3E, Osaka, Japan, Sep. 2000.
About This Type
Self-aligning ball bearings have two rows of balls running in a spherical outer-ring raceway, so the bearing accommodates shaft misalignment and housing deflection without edge loading. They carry moderate radial loads and light axial loads in both directions. Typical applications include agricultural and textile machinery, conveyors, fans and blowers, and woodworking machines — arrangements where perfect alignment cannot be held.
This type is the low-friction, high-speed choice when misalignment is expected but loads stay moderate; for heavy loads a spherical roller bearing is the stronger alternative. The CN/C2/C3 clearance groups apply, with C3 common where fits are tight or temperatures run high. Most sizes are available with a cylindrical bore or a tapered bore (suffix K) for adapter-sleeve mounting, and many come open or with integral contact seals.
Tapered-bore versions are mounted on adapter or withdrawal sleeves with the drive-up method, measuring the clearance reduction rather than relying on nut torque; the spherical raceway accommodates residual misalignment but not an over-tightened sleeve, which removes the internal clearance. Sealed variants are greased for life and need no relubrication.
Series note: The 12 series is the standard light design and the most widely used self-aligning ball bearing series.
Related Guides
Disclaimer: Data on this page is compiled from publicly available online sources for reference only, and not every model appears in a manufacturer's published catalog. Values may differ between sources and editions — always verify against the manufacturer's current documentation before design or purchase.Full disclaimer →