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 | |
| 22228 MB/W33 | 22228 MBK/W33 | 140 | 250 | 68 | 743 | 893 | 2800 | 14 |
| 24128 MB/W33 | 24128 MBK30/W33 | 140 | 225 | 85 | 811 | 1140 | 1900 | 13.5 |
| 23128 MB/W33 | 23128 MBK/W33 | 140 | 225 | 68 | 663 | 898 | 2500 | 10.5 |
| 24028 MB/W33 | 24028 MBK30/W33 | 140 | 210 | 69 | 610 | 890 | 2500 | 8.55 |
| 23028 MB/W33 | 23028 MBK/W33 | 140 | 210 | 53 | 486 | 672 | 2900 | 6.55 |
| 22326 MB/W33 | 22326 MBK/W33 | 130 | 280 | 93 | 1178 | 1324 | 2100 | 29 |
| 23226 MB/W33 | 23226 MBK/W33 | 130 | 230 | 80 | 827 | 1050 | 2300 | 14.5 |
| 29226 MB/W33 | 29226 MBK/W33 | 130 | 230 | 64 | 657 | 920 | 11 | |
| 22226 MB/W33 | 22226 MBK/W33 | 130 | 230 | 64 | 753 | 920 | 3200 | 11 |
| 24126 MB/W33 | 24126 MBK30/W33 | 130 | 210 | 80 | 703 | 985 | 2100 | 11 |
| 23126 MB/W33 | 23126 MBK/W33 | 130 | 210 | 64 | 595 | 766 | 2800 | 8.8 |
| 24026 MB/W33 | 24026 MBK30/W33 | 130 | 200 | 69 | 568 | 814 | 2600 | 8.05 |
| 23026 MB/W33 | 23026 MBK/W33 | 130 | 200 | 52 | 448 | 610 | 3200 | 6 |
| 22324 MB/W33 | 22324 MBK/W33 | 120 | 260 | 86 | 1030 | 1110 | 2300 | 23 |
| 23224 MB/W33 | 23224 MBK/W33 | 120 | 215 | 76 | 745 | 912 | 2500 | 12 |
| 22224 MB/W33 | 22224 MBK/W33 | 120 | 215 | 58 | 660 | 753 | 3300 | 8.7 |
| 231581 MB/W33 | 120 | 205 | 68 | 528 | 863 | 9.2 | ||
| 24124 MB/W33 | 24124 MBK30/W33 | 120 | 200 | 80 | 679 | 940 | 2300 | 10.5 |
| 23124 MB/W33 | 23124 MBK/W33 | 120 | 200 | 62 | 543 | 683 | 2900 | 8 |
| 24024 MB/W33 | 24024 MBK30/W33 | 120 | 180 | 60 | 461 | 662 | 2900 | 5.45 |
