| 带座轴承型号 | 轴径 | 外形尺寸(mm)/(in.) | ||
| d(mm) | d(inch) | D | B | |
| RB204-12 | - | 3/4 | 47/1.8504 | 31/1.2205 | RB204 | 20 | - | 47/1.8504 | 31/1.2205 |
| UC205-14 | - | 7/8 | 52/2.0472 | 34/1.3386 | RB205-15 | - | 15/16 | 52/2.0472 | 34/1.3386 |
| RB205 | 25 | - | 52/2.0472 | 34/1.3386 | RB205-16 | - | 1 | 52/2.0472 | 34/1.3386 |
| UC206-18 | - | 1-1/8 | 62/2.4409 | 38.1/1.5000 | RB206 | 30 | - | 62/2.4409 | 38.1/1.5000 |
| RB206-19 | - | 1-3/16 | 62/2.4409 | 38.1/1.5000 | RB206-20 | - | 1-1/4 | 62/2.4409 | 38.1/1.5000 |
| UC207-20 | - | 1-1/4 | 72/2.8346 | 42.9/1.6890 | RB207-21 | - | 1-5/16 | 72/2.8346 | 42.9/1.6890 |