The self-aligning roller bearings used in fans have the characteristics of automatic centering, bearing multi-directional loads, adapting to low-speed heavy loads, resisting impact vibrations, structural optimization, sealing and dust prevention, high rigidity, and wide application. The specific analysis is as follows:
Automatic centering function: The outer raceway of the self-aligning roller bearing is spherical, and the curvature center is located on the bearing axis. This design enables it to compensate for coaxiality errors. When the main shaft bends or the angle deviation between the shaft and the bearing housing is caused by changes in wind force during the operation of the fan, the bearings can still operate normally to ensure the stability of the equipment. For example, when the main shaft of a wind turbine tilts due to wind force, the bearing can maintain stable operation through its centering performance.
Bearing multi-directional loads: Spherical roller bearings can simultaneously withstand radial loads and bidirectional axial loads.
. In a wind turbine, the main shaft needs to bear the weight of the blades and hub (radial force), the axial force generated by wind force, and the overturning moment caused by changes in wind force. The double row roller structure of this bearing can distribute the load, avoid single row overload, and extend the service life.Adapt to low-speed heavy load: The main shaft speed of the fan is low, but it needs to withstand huge loads.
. Self aligning roller bearings improve their load-bearing capacity by optimizing the contact between the rollers and the raceway (line contact), making them particularly suitable for low-speed heavy load scenarios. For example, in large construction and mining machinery, this bearing is commonly used to withstand vibration impact and heavy loads.Impact and vibration resistance: Under low-speed conditions, the contact area between the roller and the raceway of the self-aligning roller bearing is large, which can effectively disperse the impact force and reduce the impact of vibration on the equipment.
. This characteristic makes it stand out in industries with frequent vibrations such as wind power and metallurgy.Structural optimization design: Modern self-aligning roller bearings are constantly improving in terms of materials and structure, such as adopting a symmetrical roller design, eliminating axial force through a movable intermediate retaining ring, so that the rollers are not constrained by the central edge, and longer rollers can be used to further improve the load-bearing capacity.
.Sealing and dustproof design: For the operating environment of the fan, self-aligning roller bearings are usually equipped with sealing devices (such as sealing rings and dust covers) to prevent dust and impurities from entering the interior of the bearing, reduce wear, and extend service life.
. For example, the fan specific bearing series has been specially designed to meet noise requirements and improve its service life on the fan.High rigidity: The self-aligning roller bearing has a large contact area between the roller and the raceway, high rigidity, and small deformation when subjected to radial loads, ensuring the accuracy of equipment operation.
. This characteristic is particularly important in equipment that requires high-precision rotational motion, such as papermaking and printing.Wide application scenarios: Spherical roller bearings are not only used in fans, but also widely used in heavy machinery (such as construction machinery, mining machinery), steel metallurgy (such as rolling mills, continuous casting machines), wind power industry (such as spindle bearings), paper printing (such as transmission systems and drum components) and other fields, meeting the performance requirements of different industries for bearings.
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