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.
✉️ 22205 MB/W33 22205 MBK/W33 25 52 18 49.1 43.8 12200 15100 0.26
✉️ 21305 MB/W33 21305 MBK/W33 25 62 17 48.8 41.2 8700 10500 0.28
✉️ 22206 MB/W33 22206 MBK/W33 30 62 20 65.6 59.6 9300 12400 0.29
✉️ 21306 MB/W33 21306 MBK/W33 30 72 19 64.5 60.8 7600 8900 0.41
✉️ 22207 MB/W33 22207 MBK/W33 35 72 23 87.9 83.4 8100 10200 0.45
✉️ 21307 MB/W33 21307 MBK/W33 35 80 21 79 70.9 6700 8400 0.55
✉️ 22208 MB/W33 22208 MBK/W33 40 80 23 97.2 88.2 7200 9500 0.53
✉️ 21308 MB/W33 21308 MBK/W33 40 90 23 109 108 6200 8200 0.75
✉️ 22308 MB/W33 22308 MBK/W33 40 90 33 153 140 5400 6900 1.05
✉️ 22209 MB/W33 22209 MBK/W33 45 85 23 103.5 97.9 7000 8800 0.58
✉️ 21309 MB/W33 21309 MBK/W33 45 100 25 127 125 5800 7300 0.99
✉️ 22309 MB/W33 22309 MBK/W33 45 100 36 187 183 4900 6000 1.4
✉️ 22210 MB/W33 22210 MBK/W33 50 90 23 109 107 6500 8100 0.63
✉️ 21310 MB/W33 21310 MBK/W33 50 110 27 159 163 5200 6600 1.35
✉️ 22310 MB/W33 22310 MBK/W33 50 110 40 225 224 4500 5400 1.9
✉️ 22211 MB/W33 22211 MBK/W33 55 100 25 131 127 5700 7400 0.84
✉️ 21311 MB/W33 21311 MBK/W33 55 120 29 159 163 5200 6700 1.7
✉️ 22311 MB/W33 22311 MBK/W33 55 120 43 279 279 4000 4900 2.45
✉️ 22212 MB/W33 22212 MBK/W33 60 110 28 162 164 5100 6500 1.15
✉️ 21312 MB/W33 21312 MBK/W33 60 130 31 217 239 4400 5600 2.1
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