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Features 
Superior load-bearing capacity for heavy-duty applications.
Precision-engineered for smooth, low-friction operation.
Robust design ensures long-lasting performance.
Features 
Specification | Bearing type | Principal dimensions | Basic load ratings | Reference weight(kg) | ||||||||
| New | Original | (mm) | (KN) | (KN) | |||||||
| Type | Type | d | D | T | B | C | R | r | Cr | Cor | W |
| 30303 | 7303E | 17 | 47 | 15.25 | 14 | 12 | 1 | 1 | 28.3 | 27.4 | 0.129 |
| 30304 | 7304E | 20 | 52 | 16.25 | 15 | 13 | 1.5 | 1.5 | 33.1 | 33.2 | 0.1 65 |
| 30305 | 7305E | 25 | 62 | 18.25 | 17 | 15 | 1.5 | 1.5 | 46.9 | 48.1 | 0.263 |
| 30306 | 7306E | 30 | 72 | 20.75 | 19 | 16 | 1.5 | 1.5 | 59 | 63.1 | 0.387 |
| 30307 | 7307E | 35 | 80 | 22.75 | 21 | 18 | 2 | 1.5 | 75.3 | 82.6 | 0.515 |
| 30308 | 7308E | 40 | 90 | 25.25 | 23 | 20 | 2 | 1.5 | 90.9 | 107.6 | 0.747 |
| 30309 | 7309E | 45 | 100 | 27.25 | 25 | 22 | 2 | 1.5 | 108.9 | 129.8 | 0.984 |
| 30310 | 7310E | 50 | 110 | 29.25 | 27 | 23 | 2.5 | 2 | 130.1 | 157.1 | 1.28 |
| 30311 | 7311E | 55 | 120 | 31.5 | 29 | 25 | 2.5 | 2 | 153.3 | 187.6 | 1.63 |
| 30312 | 7312E | 60 | 130 | 33.5 | 31 | 26 | 3 | 2.5 | 171.4 | 210 | 1.99 |
| 30313 | 7313E | 65 | 140 | 36 | 33 | 28 | 3 | 2.5 | 195.9 | 241.7 | 2.44 |
| 30314 | 7314E | 70 | 150 | 38 | 35 | 30 | 3 | 2.5 | 219 | 271.7 | 2.98 |
| 30315 | 7315E | 75 | 160 | 40 | 37 | 31 | 3 | 2.5 | 252.8 | 318.8 | 3.57 |
| 30316 | 7316E | 80 | 170 | 42.5 | 39 | 33 | 3 | 2.5 | 278.8 | 352.5 | 4.27 |
| 30317 | 7317E | 85 | 180 | 44.5 | 41 | 34 | 4 | 3 | 304.9 | 388.2 | 4.96 |
| 30318 | 7318E | 90 | 190 | 46.5 | 43 | 36 | 4 | 3 | 342.1 | 440.9 | 5800 |
| 30319 | 7319E | 95 | 200 | 49.5 | 45 | 38 | 4 | 3 | 369 | 477.7 | 6.8 |
| 30320 | 7320E | 100 | 215 | 51.5 | 47 | 39 | 4 | 3 | 406.4 | 526.4 | 8.22 |
Diagram 
