| Bearing model number | Basic Dimensions（mm） | Bearing weight | ||
|---|---|---|---|---|
| d inner diameter |
D outer diameter |
B thickness |
||
| 31330 | 150 | 320 | 82 | 27.4 |
| 31328 | 140 | 300 | 77 | 22.8 |
| 31326 | 130 | 280 | 72 | 18.4 |
| 31324 | 120 | 260 | 68 | 15.6 |
| 31322 | 110 | 290 | 63 | 11 |
| 31321 | 105 | 225 | 58 | 9.65 |
| 31320 | 100 | 215 | 56.5 | 8.59 |
| 31319 | 95 | 200 | 49.5 | 6.46 |
| 31318 | 90 | 190 | 46.5 | 5.46 |
| 31317 | 85 | 180 | 44.5 | 4.69 |
| 31316 | 80 | 170 | 42.5 | 4.05 |
| 31315 | 75 | 160 | 40 | 3.38 |
| 31314 | 70 | 150 | 38 | 2.86 |
| 31313 | 65 | 140 | 36 | 2.37 |
| 31312 | 60 | 130 | 33.5 | 1.9 |
| 31311 | 55 | 120 | 31.5 | 1.56 |
| 31310 | 50 | 110 | 29.25 | 1.21 |
| 31309 | 45 | 100 | 27.25 | 0.944 |
| 31308 | 40 | 90 | 25.25 | 0.727 |
| 31307 | 35 | 80 | 22.75 | 0.514 |
