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 | |
| 23288 MB/W33 | 23288 MBK/W33 | 440 | 790 | 280 | 8216 | 12380 | 520 | 590 |
| 24188 MB/W33 | 24188 MBK30/W33 | 440 | 720 | 280 | 7816 | 13100 | 390 | 460 |
| 23188 MB/W33 | 23188 MBK/W33 | 440 | 720 | 226 | 6201 | 9970 | 760 | 360 |
| 24088 MB/W33 | 24088 MBK30/W33 | 440 | 650 | 212 | 4892 | 9090 | 740 | 245 |
| 23088 MB/W33 | 23088 MBK/W33 | 440 | 650 | 157 | 3832 | 6540 | 900 | 180 |
| 23988 MB/W33 | 23988 MBK/W33 | 440 | 600 | 118 | 2475 | 4860 | 880 | 99.5 |
| 23284 MB/W33 | 23284 MBK/W33 | 420 | 760 | 272 | 7543 | 11510 | 540 | 535 |
| 24184 MB/W33 | 24184 MBK30/W33 | 420 | 700 | 280 | 7433 | 12520 | 430 | 445 |
| 23184 MB/W33 | 23184 MBK/W33 | 420 | 700 | 224 | 5911 | 9230 | 770 | 350 |
| 24084 MB/W33 | 24084 MBK30/W33 | 420 | 620 | 200 | 4524 | 8190 | 770 | 210 |
| 23084 MB/W33 | 23084 MBK/W33 | 420 | 620 | 150 | 3481 | 5960 | 940 | 155 |
| 23984 MB/W33 | 23984 MBK/W33 | 420 | 560 | 106 | 2046 | 4110 | 970 | 74.5 |
| 22380 MB/W33 | 22380 MBK/W33 | 400 | 820 | 243 | 7768 | 10380 | 660 | 650 |
| 23280 MB/W33 | 23280 MBK/W33 | 400 | 720 | 256 | 6958 | 10280 | 580 | 450 |
| 24180 MB/W33 | 24180 MBK30/W33 | 400 | 650 | 250 | 6294 | 10390 | 450 | 340 |
| 23180 MB/W33 | 23180 MBK/W33 | 400 | 650 | 200 | 4863 | 7500 | 830 | 265 |
| 24080 MB/W33 | 24080 MBK30/W33 | 400 | 600 | 200 | 4423 | 7840 | 790 | 205 |
| 23080 MB/W33 | 23080 MBK/W33 | 400 | 600 | 148 | 3360 | 5750 | 980 | 150 |
| 23980 MB/W33 | 23980 MBK/W33 | 400 | 540 | 106 | 1999 | 3890 | 1080 | 71 |
| 23276 MB/W33 | 23276 MBK/W33 | 380 | 680 | 240 | 6168 | 9070 | 660 | 375 |
