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 | |
| 23134 MB/W33 | 23134 MBK/W33 | 170 | 280 | 88 | 1102 | 1490 | 2100 | 22 |
| 24034 MB/W33 | 24034 MBK30/W33 | 170 | 260 | 90 | 973 | 1440 | 2100 | 17.5 |
| 23034 MB/W33 | 23034 MBK/W33 | 170 | 260 | 67 | 743 | 1040 | 2400 | 13 |
| 22332 MB/W33 | 22332 MBK/W33 | 160 | 340 | 114 | 1694 | 1950 | 1700 | 52 |
| 23232 MB/W33 | 23232 MBK/W33 | 160 | 290 | 104 | 1263 | 1650 | 1900 | 31 |
| 22232 MB/W33 | 22232 MBK/W33 | 160 | 290 | 80 | 1048 | 1280 | 2500 | 22.5 |
| 24132 MB/W33 | 24132 MBK30/W33 | 160 | 270 | 109 | 1229 | 1750 | 1700 | 25 |
| 23132 MB/W33 | 23132 MBK/W33 | 160 | 270 | 86 | 1035 | 1360 | 2100 | 20.5 |
| 24032 MB/W33 | 24032 MBK/W33 | 160 | 240 | 80 | 777 | 1180 | 2100 | 13 |
| 23032 MB/W33 | 23032 MBK/W33 | 160 | 240 | 60 | 613 | 879 | 2600 | 9.7 |
| 24932 MB/W33 | 160 | 220 | 60 | 413 | 840 | 6.85 | ||
| 22330 MB/W33 | 22330 MBK/W33 | 150 | 320 | 108 | 1523 | 1740 | 1800 | 43.5 |
| 23230 MB/W33 | 23230 MBK/W33 | 150 | 270 | 96 | 1135 | 1457 | 1900 | 24.5 |
| 22230 MB/W33 | 22230 MBK/W33 | 150 | 270 | 73 | 905 | 1070 | 2600 | 18 |
| 24130 MB/W33 | 24130 MBK30/W33 | 150 | 250 | 100 | 1036 | 1510 | 1800 | 20 |
| 23130 MB/W33 | 23130 MBK/W33 | 150 | 250 | 80 | 890 | 1190 | 2300 | 16 |
| 24030 MB/W33 | 24030 MBK30/W33 | 150 | 225 | 75 | 682 | 1030 | 2300 | 10.5 |
| 23030 MB/W33 | 23030 MBK/W33 | 150 | 225 | 56 | 538 | 749 | 2800 | 7.95 |
| 22328 MB/W33 | 22328 MBK/W33 | 140 | 300 | 102 | 1434 | 1540 | 1900 | 36.5 |
| 23228 MB/W33 | 23228 MBK/W33 | 140 | 250 | 88 | 964 | 1240 | 2100 | 19 |
