| Bearing type | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| 6304-2ZNR | 20 | 52 | 15 |
| 6304-RSH | 20 | 52 | 15 |
| 6304-RSL | 20 | 52 | 15 |
| 6304-Z | 20 | 52 | 15 |
| 6304-ZNR | 20 | 52 | 15 |
| 6305 ETN9 | 25 | 62 | 17 |
| 6305 N | 25 | 62 | 17 |
| 6305 NR | 25 | 62 | 17 |
| 6305/HR11QN | 25 | 62 | 17 |
| 6305/HR11TN | 25 | 62 | 17 |
| 6305/HR22Q2 | 25 | 62 | 17 |
| 6305/HR22T2 | 25 | 62 | 17 |
| 6305-2RS1 | 25 | 62 | 17 |
| 6305-2RZ | 25 | 62 | 17 |
| 6305-2Z | 25 | 62 | 17 |
| 6305-2Z/VA201 | 25 | 62 | 17 |
| 6305-2Z/VA208 | 25 | 62 | 17 |
| 6305-2Z/VA228 | 25 | 62 | 17 |
| 6305-2ZNR | 25 | 62 | 17 |
| 6305-RS1 | 25 | 62 | 17 |
| 6305-RZ | 25 | 62 | 17 |
| 6305-Z | 25 | 62 | 17 |
| 6305-ZNR | 25 | 62 | 17 |
| 6306 ETN9 | 30 | 72 | 19 |
| 6306 N | 30 | 72 | 19 |
| 6306 NR | 30 | 72 | 19 |
| 6306/HR11QN | 30 | 72 | 19 |
| 6306/HR11TN | 30 | 72 | 19 |
| 6306/HR22Q2 | 30 | 72 | 19 |
| 6306/HR22T2 | 30 | 72 | 19 |
