| Boundary dimensions(mm) | Mass(g) | Bearing Number | |||
| d | F | B | (Approx.) | ||
| 30 | 35 | 16.5 | 31.4 | LR30X35X16.5 | 30 | 35 | 20.5 | 40.7 | LR30X35X20.5 |
| 35 | 40 | 12.5 | 27.2 | LR35X40X12.5 | 35 | 40 | 16.5 | 37.4 | LR35X40X16.5 |
| 35 | 40 | 20.5 | 46.1 | LR35X40X20.5 | 40 | 45 | 16.5 | 41.4 | LR40X45X16.5 |
| 40 | 45 | 20.5 | 52.5 | LR40X45X20.5 | 45 | 50 | 20.5 | 58.8 | LR45X50X20.5 |
| 45 | 50 | 25.5 | 73.7 | LR45X50X25.5 | 50 | 55 | 20.5 | 64.1 | LR50X55X20.5 |
| 50 | 55 | 25 | 77.8 | LR50X55X25 | 120 | 135 | 45 | 1000 | IR120X135X45 |
