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 | |
| 23264 MB/W33 | 23264 MBK/W33 | 320 | 580 | 208 | 4623 | 6690 | 850 | 240 |
| 22264 MB/W33 | 22264 MBK/W33 | 320 | 580 | 150 | 3782 | 4990 | 1160 | 175 |
| 24164 MB/W33 | 24164 MBK30/W33 | 320 | 540 | 218 | 4443 | 7090 | 610 | 210 |
| 23164 MB/W33 | 23164 MBK/W33 | 320 | 540 | 176 | 3653 | 5504 | 960 | 165 |
| 24064 MB/W33 | 24064 MBK30/W33 | 320 | 480 | 160 | 2920 | 5060 | 1080 | 100 |
| 23064 MB/W33 | 23064 MBK/W33 | 320 | 480 | 121 | 2328 | 3740 | 1260 | 78 |
| 23964 MB/W33 | 23964 MBK/W33 | 320 | 440 | 90 | 1502 | 2723 | 1300 | 42 |
| 23864 MB/W33 | 23864 MBK/W33 | 320 | 400 | 60 | 661 | 1656 | - | 17.5 |
| 23260 MB/W33 | 23260 MBK/W33 | 300 | 540 | 192 | 4042 | 5810 | 850 | 190 |
| 22260 MB/W33 | 22260 MBK/W33 | 300 | 540 | 140 | 3228 | 4220 | 1200 | 135 |
| 24160 MB/W33 | 24160 MBK30/W33 | 300 | 500 | 200 | 3825 | 6290 | 690 | 160 |
| 23160 MB/W33 | 23160 MBK/W33 | 300 | 500 | 160 | 3108 | 4688 | 1040 | 125 |
| 24060 MB/W33 | 24060 MBK30/W33 | 300 | 460 | 160 | 2779 | 4710 | 1050 | 97 |
| 23060 MB/W33 | 23060 MBK/W33 | 300 | 460 | 118 | 2192 | 3410 | 1340 | 71.5 |
| 23960 MB/W33 | 23960 MBK/W33 | 300 | 420 | 90 | 1400 | 2490 | 1400 | 39.5 |
| 23860 MB/W33 | 23860 MBK/W33 | 300 | 380 | 60 | 512 | 1196 | 17 | |
| 22356 MB/W33 | 22356 MBK/W33 | 280 | 580 | 175 | 4147 | 5130 | 970 | 235 |
| 23256 MB/W33 | 23256 MBK/W33 | 280 | 500 | 176 | 3453 | 4793 | 1057 | 150 |
| 22256 MB/W33 | 22256 MBK/W33 | 280 | 500 | 130 | 2844 | 3730 | 1330 | 115 |
| 24156 MB/W33 | 24156 MBK30/W33 | 280 | 460 | 180 | 3125 | 5080 | 800 | 120 |
