| Boundary dimensions(mm) | Mass(g) | Bearing Number | ||
| d | F | B | (Approx.) | |
| 40 | 45 | 22.5 | - | IR40X45X22.5 | 40 | 45 | 30 | 77.1 | IR40X45X30 |
| 40 | 48 | 22 | 92.3 | IR40X48X22 | 40 | 48 | 23 | 97.3 | IR40X48X23 |
| 40 | 48 | 40 | 170 | IR40X48X40 | 40 | 50 | 20 | 106 | IR40X50X20 |
| 40 | 50 | 22 | 118 | IR40X50X22 | 42 | 47 | 20 | 53.5 | IR42X47X20 |
| 42 | 47 | 30 | 81 | IR42X47X30 | 45 | 50 | 20 | 58 | IR45X50X20 |
| 45 | 50 | 25 | 71.1 | IR45X50X25 | 45 | 50 | 25.5 | 73.7 | IR45X50X25.5 |
| 45 | 50 | 26 | 75 | IR45X50X26 | 45 | 50 | 35 | 101 | IR45X50X35 |
| 45 | 50 | 40 | 120 | IR45X50X40 | 45 | 52 | 22 | 89 | IR45X52X22 |
| 45 | 52 | 23 | 93 | IR45X52X23 | 45 | 52 | 40 | 164 | IR45X52X40 |
| 45 | 55 | 20 | 117 | IR45X55X20 | 45 | 55 | 22 | 130 | IR45X55X22 |
| 45.2 | 58 | 36 | 126 | IR45.2X58X36 | 47 | 60 | 35 | 130 | IR47X60X35 |
| 50 | 55 | 20 | 62.6 | IR50X55X20 | 50 | 55 | 35 | 112 | IR50X55X35 |
