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.
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 |