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 | |
| 22338 MB/W33 | 22338 MBK/W33 | 190 | 400 | 132 | 2267 | 2640 | 1400 | 82.5 |
| 23238 MB/W33 | 23238 MBK/W33 | 190 | 340 | 120 | 1788 | 2359 | 1600 | 48 |
| 22238 MB/W33 | 22238 MBK/W33 | 190 | 340 | 92 | 1320 | 1680 | 2100 | 36.5 |
| 24138 MB/W33 | 24138 MBK30/W33 | 190 | 320 | 128 | 1621 | 2470 | 1300 | 43 |
| 23138 MB/W33 | 23138 MBK/W33 | 190 | 320 | 104 | 1454 | 2060 | 1800 | 35 |
| 24038 MB/W33 | 24038 MBK30/W33 | 190 | 290 | 100 | 1186 | 1770 | 1700 | 24.5 |
| 23038 MB/W33 | 23038 MBK/W33 | 190 | 290 | 75 | 931 | 1330 | 2100 | 18 |
| 23938 MB/W33 | 23938 MBK/W33 | 190 | 260 | 52 | 490 | 791 | 2300 | 8.3 |
| 22336 MB/W33 | 22336 MBK/W33 | 180 | 380 | 126 | 2110 | 2420 | 1500 | 71.5 |
| 23236 MB/W33 | 23236 MBK/W33 | 180 | 320 | 112 | 1554 | 2110 | 1700 | 39.5 |
| 22236 MB/W33 | 22236 MBK/W33 | 180 | 320 | 86 | 1218 | 1540 | 2300 | 29.5 |
| 24136 MB/W33 | 24136 MBK30/W33 | 180 | 300 | 118 | 1464 | 2150 | 1400 | 34.5 |
| 23136 MB/W33 | 23136 MBK/W33 | 180 | 300 | 96 | 1247 | 1730 | 1900 | 28 |
| 24036 MB/W33 | 24036 MBK30/W33 | 180 | 280 | 100 | 1131 | 1710 | 1900 | 23 |
| 23036 MB/W33 | 23036 MBK/W33 | 180 | 280 | 74 | 884 | 1240 | 2300 | 17 |
| 23936 MB/W33 | 23936 MBK/W33 | 180 | 250 | 52 | 512 | 821 | 2500 | 7.9 |
| 22334 MB/W33 | 22334 MBK/W33 | 170 | 360 | 120 | 1894 | 2130 | 1600 | 61 |
| 23234 MB/W33 | 23234 MBK/W33 | 170 | 310 | 110 | 1481 | 1910 | 1700 | 37.5 |
| 22234 MB/W33 | 22234 MBK/W33 | 170 | 310 | 86 | 1176 | 1450 | 2300 | 28.5 |
| 24134 MB/W33 | 24134 MBK30/W33 | 170 | 280 | 109 | 1271 | 1890 | 1600 | 27.5 |
