| Bearing No. | Boundary Dimensions(mm inch) | |||
| d | D | B | C | |
| UC311-34 | 2-1/8 | - | - | - |
| UC311-35 | 2-3/16 | - | - | - |
| UC312 | 60 | 130 | 71 | 36 |
| UC312-36 | 2-1/4 | 5.1181 | 2.7953 | 1.4173 |
| UC312-37 | 2-5/6 | - | - | - |
| UC312-38 | 2-3/8 | - | - | - |
| UC312-39 | 2-7/16 | - | - | - |
| UC313 | 65 | 140 | 75 | 38 |
| UC313-40 | 2-1/2 | 5.5118 | 2.9528 | 1.4961 |
| UC313-41 | 2-9/16 | - | - | - |
| UC314 | 70 | 150 | 78 | 40 |
| UC314-42 | 2-/8 | 5.9055 | 3.0708 | 1.5748 |
| UC314-43 | 2-11/16 | - | - | - |
| UC314-44 | 2-3/4 | - | - | - |
| UC315 | 75 | 160 | 82 | 42 |
| UC315-45 | 2-13/16 | 6.2992 | 3.2283 | 1.6535 |
| UC315-46 | 2-7/8 | - | - | - |
| UC315-47 | 2-15/16 | - | - | - |
| UC315-48 | 3 | - | - | - |
| UC316 | 80 | 170 | 86 | 44 |
| UC316-49 | 3-1/16 | 6.6929 | 3.3858 | 1.7323 |
| UC316-50 | 3-1/8 | - | - | - |
| UC316-51 | 3-1/8 | - | - | - |
| UC317 | 85 | 180 | 96 | 46 |