MB Series Self-Aligning Roller BearingsSelf-aligning roller bearings

MB-type self-aligning roller bearings feature a symmetrical barrel-shaped roller design and are equipped with an inner ring-guided double-row solid brass cage. With a robust structure and exceptional rigidity, they offer excellent self-aligning capabilities, effectively compensating for shaft deflection and misalignment errors. These bearings can withstand extremely high radial loads and bidirectional axial loads, while also providing outstanding resistance to shock, vibration, and wear, ensuring smooth and reliable operation. and excellent high-temperature resistance. The cage of this bearing type boasts high strength and good toughness, making it resistant to deformation and fracture under severe operating conditions involving heavy loads, frequent impacts, and intense vibrations. Compared to the MA type, its inner ring guidance method is more targeted, ensuring more precise roller positioning and more stable lubrication during operation. It is suitable for working environments with extremely high requirements for bearing reliability and service life, and is widely used in large-scale industrial equipment subject to strong impacts and heavy loads, such as mining crushers, large vibrating screens, metallurgical rolling mills, heavy-duty gear reducers, cement equipment, and port cranes—all of which are subject to high impact and heavy loads. Thanks to its exceptional structural strength and durable operational characteristics, it has become a critical bearing component for ensuring continuous and stable equipment operation under extreme conditions.


MB Series Self-Aligning Roller BearingsSelf-aligning roller bearings

Product Parameters

Inquiry Bearing Designation Basic Dimensions (mm) Rated Load (kN) Limiting Speed (r/min) Weight
≈kg
Cylindrical Bore Tapered Bore d D B C Dynamic C0 Static Ref. Lim.
✉️ 238/630 MB/W33 238/630 MBK/W33 630 780 112 2502 6050 400 660 120
✉️ 239/630 MB/W33 239/630 MBK/W33 630 850 165 4693 9660 370 600 280
✉️ 230/630 MB/W33 230/630 MBK/W33 630 920 212 6968 12480 350 600 485
✉️ 240/630 MB/W33 240/630 MBK30/W33 630 920 290 9119 17900 300 470 645
✉️ 231/630 MB/W33 231/630 MBK/W33 630 1030 315 12778 20390 240 470 1050
✉️ 241/630 MB/W33 241/630 MBK30/W33 630 1030 400 15082 26730 170 250 1400
✉️ 238/670 MB/W33 238/670 MBK/W33 670 820 112 2592 6420 360 620 130
✉️ 239/670 MB/W33 239/670 MBK/W33 670 900 170 5134 10760 330 600 315
✉️ 230/670 MB/W33 230/670 MBK/W33 670 980 230 7799 14410 310 510 600
✉️ 240/670 MB/W33 240/670 MBK30/W33 670 980 308 10378 20350 270 450 790
✉️ 231/670 MB/W33 231/670 MBK/W33 670 1090 336 13199 22465 220 430 1250
✉️ 241/670 MB/W33 241/670 MBK30/W33 670 1090 412 16093 28910 160 230 1600
✉️ 232/670 MB/W33 232/670 MBK/W33 670 1220 438 19011 30260 200 320 2270
✉️ 238/710 MB/W33 238/710 MBK/W33 710 870 118 3049 7490 330 600 153
✉️ 239/710 MB/W33 239/710 MBK/W33 710 950 180 5693 11840 310 530 365
✉️ 249/710 MB/W33 249/710 MBK30/W33 710 950 243 6871 15580 270 430 495
✉️ 230/710 MB/W33 230/710 MBK/W33 710 1030 236 8521 16280 280 500 670
✉️ 240/710 MB/W33 240/710 MBK30/W33 710 1030 315 11237 22380 240 390 895
✉️ 231/710 MB/W33 231/710 MBK/W33 710 1150 345 14637 25600 220 400 1450
✉️ 241/710 MB/W33 241/710 MBK30/W33 710 1150 438 17613 32400 150 210 1900
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