Thin section deep groove ball bearing 61909 45x68x12 mm
Thin section bearings of the 69 series have considerably smaller dimensions than deep groove ball bearings of the 60, 62, 63 and 64 series with their thin, square cross section at the same inside diameter. Relatively high shaft- and axis diameters can thereby be installed at an also extremely confined installation space. They are extremely light and are suitable for comparatively high speeds. Used extensively in machine tools, textile machinery and jet engine gearbox applications.
| d | 45 mm | Bore diameter |
| D | 68 mm | Outside diameter |
| B | 12 mm | Width |
| d1 | 52.4 mm | Shoulder diameter inner ring |
| D1 | 61.2 mm | Shoulder diameter outer ring |
| r | 0.6 mm | Chamfer dimension |
| Cr | 14 kN | Basic dynamic load rating |
| C0r | 10.8 kN | Basic static load rating |
| 20000 r/min | Reference Speed | |
| 13000 r/min | Limiting speed |
| ≈m | 0.14 kg | Weight |
| Bearing steel | Material of race | |
| Sheet steel | Cage | |
| Open | Closures | |
| CN | Radial clearance | |
| P0 | Tolerance |
| SKF | NSK | TIMKEN |
| 61909 | 6909 | 9309K |
