The basic designs of single row deep groove ball bearings are open and sealed. For manufacturing reasons, open bearings of the same size as sealed or dust-proof bearings may also have seal grooves in the outer ring. Bearings with shields or seals on both sides are maintenance-free, lubricated for life. Such bearings cannot be cleaned and the temperature cannot exceed 80 degrees Celsius.
| Bearing Number | d mm | D mm | B mm |
| 6403 | 17 | 62 | 17 |
| 6404 | 20 | 72 | 19 |
| 6405 | 25 | 80 | 21 |
| 6406 | 30 | 90 | 23 |
| 6407 | 35 | 100 | 25 |
| 6408 | 40 | 110 | 27 |
| 6409 | 45 | 120 | 29 |
| 6410 | 50 | 130 | 31 |
| 6411 | 55 | 140 | 33 |
| 6412 | 60 | 150 | 35 |
| 6413 | 65 | 160 | 37 |
| 6414 | 70 | 180 | 42 |
| 6415 | 75 | 190 | 45 |
| 6416 | 80 | 200 | 48 |
| 6417 | 85 | 210 | 52 |
| 6418 | 90 | 225 | 54 |
| 6420 | 100 | 250 | 58 |
| 6422 | 110 | 280 | 65 |
| 6426 | 130 | 340 | 78 |