The MB-type self-aligning roller bearing features a double-row, symmetrical barrel-shaped roller configuration, fitted with a two-piece, solid, machined brass cage. Designed with an inner ring guide, the inner ring is fitted with a central rib to ensure stable positioning of the rollers during operation. As the MB type relies on the inner ring to guide the cage, it operates more smoothly and offers superior high-speed stability compared to the MA type; compared to the CA type, the split cage provides better heat dissipation. They are widely used in rolling mills, large fans, cement plant equipment, conveyors, paper-making machinery and heavy-duty gearboxes.
| Bearing model number | Basic Dimensions（mm） | Basic load （KN） |
Rated speed(rpm) | Bearing weight | ||||
|---|---|---|---|---|---|---|---|---|
| Cylindrical hole | Conical hole | d inner diameter |
D outer diameter |
B thickness |
Dynamic load Cr |
Static load Cor |
Limiting Speed | |
| 23024 MB/W33 | 23024 MBK/W33 | 120 | 180 | 46 | 366 | 508 | 3500 | 4.2 |
| 22322 MB/W33 | 22322 MBK/W33 | 110 | 240 | 80 | 985 | 1100 | 2500 | 18.5 |
| 23222 MB/W33 | 23222 MBK/W33 | 110 | 200 | 69.8 | 625 | 759 | 2800 | 9.85 |
| 22222 MB/W33 | 22222 MBK/W33 | 110 | 200 | 53 | 577 | 629 | 3400 | 7 |
| 24122 MB/W33 | 24122 MBK30/W33 | 110 | 180 | 69 | 545 | 741 | 2700 | 7.1 |
| 23122 MB/W33 | 23122 MBK/W33 | 110 | 180 | 56 | 452 | 578 | 3200 | 5.75 |
| 24022 MB/W33 | 24022 MBK30/W33 | 110 | 170 | 60 | 439 | 619 | 3100 | 5 |
| 23022 MB/W33 | 23022 MBK/W33 | 110 | 170 | 45 | 330 | 432 | 3800 | 3.8 |
| 22320 MB/W33 | 22320 MBK/W33 | 100 | 215 | 73 | 860 | 948 | 2700 | 13.5 |
| 21320 MB/W33 | 21320 MBK/W33 | 100 | 215 | 47 | 432 | 486 | 3850 | 8.6 |
| 23220 MB/W33 | 23220 MBK/W33 | 100 | 180 | 60.3 | 502 | 590 | 3000 | 6.85 |
| 22220 MB/W33 | 22220 MBK/W33 | 100 | 180 | 46 | 431 | 482 | 4000 | 4.9 |
| 24120 MB/W33 | 24120 MBK30/W33 | 100 | 165 | 65 | 461 | 631 | 2800 | 5.65 |
| 23120 MB/W33 | 23120 MBK/W33 | 100 | 165 | 52 | 391 | 483 | 3400 | 4.55 |
| 24020 MB/W33 | 24020 MBK30/W33 | 100 | 150 | 50 | 290 | 408 | 3500 | 3.15 |
| 22319 MB/W33 | 22319 MBK/W33 | 95 | 200 | 67 | 693 | 762 | 2900 | 10.5 |
| 21319 MB/W33 | 21319 MBK/W33 | 95 | 200 | 45 | 430 | 488 | 4000 | 7.05 |
| 22219 MB/W33 | 22219 MBK/W33 | 95 | 170 | 43 | 387 | 446 | 4200 | 4.15 |
| 22318 MB/W33 | 22318 MBK/W33 | 90 | 190 | 64 | 638 | 690 | 3200 | 9.05 |
| 21318 MB/W33 | 21318 MBK/W33 | 90 | 190 | 43 | 392 | 441 | 4100 | 6.1 |
