| Bearing NO. | Bearing Number | Boundary dimensions(mm) | |||
| d | D | T | r (min） | ||
| S51100 | S51100 | 10 | 24 | 9 | 0.3 |
| S51200 | S51200 | 10 | 26 | 11 | 0.6 |
| S51101 | S51101 | 12 | 26 | 9 | 0.3 |
| S51201 | S51201 | 12 | 28 | 11 | 0.6 |
| S51102 | S51102 | 15 | 28 | 9 | 0.3 |
| S51202 | S51202 | 15 | 32 | 12 | 0.6 |
| S51103 | S51103 | 17 | 30 | 9 | 0.3 |
| S51203 | S51203 | 17 | 35 | 12 | 0.6 |
| S51104 | S51104 | 20 | 35 | 10 | 0.3 |
| S51204 | S51204 | 20 | 40 | 14 | 0.6 |
| S51105 | S51105 | 25 | 42 | 11 | 0.6 |
| S51205 | S51205 | 25 | 47 | 15 | 0.6 |
| S51106 | S51106 | 30 | 47 | 11 | 0.6 |
| S51206 | S51206 | 30 | 52 | 16 | 0.6 |
| S51107 | S51107 | 35 | 52 | 12 | 0.6 |
| S51207 | S51207 | 35 | 62 | 18 | 1 |
| S51108 | S51108 | 40 | 60 | 13 | 0.6 |
| S51208 | S51208 | 40 | 68 | 19 | 1 |
| S51109 | S51109 | 45 | 65 | 14 | 0.6 |
| S51209 | S51209 | 45 | 73 | 20 | 1 |
| S51110 | S51110 | 50 | 70 | 14 | 0.6 |
| S51210 | S51210 | 50 | 78 | 22 | 1 |
| S51111 | S51111 | 55 | 78 | 16 | 0.6 |
| S51211 | S51211 | 55 | 90 | 25 | 1 |