Dimension table · DIN 720 / ISO 355
Tapered roller bearings series 303
All 24 sizes from d 15 to 150 mm bore: principal dimensions d × D × B, dynamic and static load ratings (C, C₀), limiting speed and mass — plus the executions and brands available from us (127 products).
| Designation | d (mm) | D (mm) | B (mm) | C (kN) | C₀ (kN) | n lim (rpm) | m (kg) | Offers |
|---|---|---|---|---|---|---|---|---|
| 30302 | 15 | 42 | 14,25 | 22,4 | 20,0 | 18000 | 0,090 | 3 |
| 30303 | 17 | 47 | 15,25 | 28,1 | 25,0 | 16000 | 0,130 | 4 |
| 30304 | 20 | 52 | 16,25 | 39,0 | 32,5 | 14000 | 0,170 | 7 |
| 30305 | 25 | 62 | 18,25 | 44,6 | 43,0 | 12000 | 0,270 | 7 |
| 30306 | 30 | 72 | 20,75 | 64,0 | 56,0 | 10000 | 0,380 | 8 |
| 30307 | 35 | 80 | 22,75 | 83,0 | 73,5 | 9000 | 0,540 | 8 |
| 30308 | 40 | 90 | 25,25 | 100,0 | 95,0 | 8000 | 0,772 | 5 |
| 30309 | 45 | 100 | 27,25 | 125,0 | 120,0 | 7000 | 0,980 | 8 |
| 30310 | 50 | 110 | 29,25 | 143,0 | 140,0 | 6300 | 1,260 | 6 |
| 30311 | 55 | 120 | 31,5 | 166,0 | 163,0 | 5600 | 1,620 | 6 |
| 30312 | 60 | 130 | 33,5 | 168,0 | 196,0 | 5300 | 2,000 | 7 |
| 30313 | 65 | 140 | 36 | 194,0 | 228,0 | 4800 | 2,460 | 6 |
| 30314 | 70 | 150 | 38 | 220,0 | 260,0 | 4500 | 2,950 | 6 |
| 30315 | 75 | 160 | 40 | 246,0 | 290,0 | 4300 | 3,560 | 4 |
| 30316 | 80 | 170 | 42,5 | 270,0 | 320,0 | 4300 | 4,300 | 4 |
| 30317 | 85 | 180 | 44,5 | 303,0 | 365,0 | 4000 | 4,840 | 4 |
| 30318 | 90 | 190 | 46,5 | 330,0 | 400,0 | 4000 | 5,490 | 7 |
| 30319 | 95 | 200 | 49,5 | 330,0 | 390,0 | 3400 | 6,750 | 6 |
| 30320 | 100 | 215 | 51,5 | 402,0 | 490,0 | 3200 | 7,960 | 3 |
| 30322 | 110 | 240 | 54,5 | 473,0 | 585,0 | 2800 | 10,762 | 5 |
| 30324 | 120 | 260 | 59,5 | 561,0 | 710,0 | 2600 | 14,200 | 6 |
| 30326 | 130 | 280 | 63,75 | 627,0 | 800,0 | 2400 | 16,660 | 4 |
| 30328 | 140 | 300 | 67,75 | – | – | – | 20,500 | 1 |
| 30330 | 150 | 320 | 72 | – | – | – | 25,000 | 2 |
Load ratings (C, C0), limiting speed and mass are catalogue values of the open steel standard execution — sizes without a verified catalogue value show "–". Contact seals (RS/2RS) reduce the limiting speed; stainless and ceramic executions differ. All data without guarantee.