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 | |
| 23148 MB/W33 | 23148 MBK/W33 | 240 | 400 | 128 | 2147 | 3180 | 1400 | 66.5 |
| 24048 MB/W33 | 24048 MBK30/W33 | 240 | 360 | 118 | 1665 | 2660 | 1400 | 43 |
| 23048 MB/W33 | 23048 MBK/W33 | 240 | 360 | 92 | 1321 | 2040 | 1700 | 33.5 |
| 23948 MB/W33 | 23948 MBK/W33 | 240 | 320 | 60 | 688 | 1182 | 1800 | 13.5 |
| 22344 MB/W33 | 22344 MBK/W33 | 220 | 460 | 145 | 2834 | 3400 | 1200 | 120 |
| 23244 MB/W33 | 23244 MBK/W33 | 220 | 400 | 144 | 2534 | 3420 | 1300 | 81.5 |
| 22244 MB/W33 | 22244 MBK/W33 | 220 | 400 | 108 | 1813 | 2350 | 1700 | 60.5 |
| 24144 MB/W33 | 24144 MBK30/W33 | 220 | 370 | 150 | 2159 | 3330 | 1050 | 67 |
| 23144 MB/W33 | 23144 MBK/W33 | 220 | 370 | 120 | 1879 | 2740 | 1500 | 53.5 |
| 24044 MB/W33 | 24044 MBK30/W33 | 220 | 340 | 118 | 1656 | 2560 | 1500 | 40 |
| 23044 MB/W33 | 23044 MBK/W33 | 220 | 340 | 90 | 1256 | 1830 | 1700 | 30.5 |
| 23944 MB/W33 | 23944 MBK/W33 | 220 | 300 | 60 | 664 | 1060 | 1900 | 12.5 |
| 22340 MB/W33 | 22340 MBK/W33 | 200 | 420 | 138 | 2450 | 2890 | 1300 | 95 |
| 23240 MB/W33 | 23240 MBK/W33 | 200 | 360 | 128 | 1921 | 2690 | 1500 | 58 |
| 22240 MB/W33 | 22240 MBK/W33 | 200 | 360 | 98 | 1505 | 1920 | 1900 | 43.5 |
| 24140 MB/W33 | 24140 MBK30/W33 | 200 | 340 | 140 | 1896 | 2750 | 1200 | 53.5 |
| 23140 MB/W33 | 23140 MBK/W33 | 200 | 340 | 112 | 1679 | 2350 | 1700 | 43 |
| 24040 MB/W33 | 24040 MBK/W33 | 200 | 310 | 109 | 1355 | 2090 | 1700 | 31 |
| 23040 MB/W33 | 23040 MBK/W33 | 200 | 310 | 82 | 1058 | 1500 | 1900 | 23.5 |
| 23940 MB/W33 | 23940 MBK/W33 | 200 | 280 | 60 | 658 | 1020 | 2100 | 11.5 |
