Thin section deep groove ball bearing 61921 105x145x20 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 | 105 mm | Bore diameter |
| D | 145 mm | Outside diameter |
| B | 20 mm | Width |
| d1 | 117 mm | Shoulder diameter inner ring |
| D1 | 133 mm | Shoulder diameter outer ring |
| r | 1.1 mm | Chamfer dimension |
| Cr | 44.2 kN | Basic dynamic load rating |
| C0r | 44 kN | Basic static load rating |
| 9500 r/min | Reference Speed | |
| 5600 r/min | Limiting speed |
| ≈m | 0.87 kg | Weight |
| None | Locating feature outer ring | |
| Bearing steel | Material of race | |
| Sheet steel | Cage | |
| Open | Closures | |
| CN | Radial clearance | |
| P0 | Tolerance |
| SKF | NSK |
| 61921 | 6921 |
