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Windtech International January February 2024 issue

 

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NSK Bearing 2NSK engineers have developed a variety of different designs that are optimally matched to the attributes required of main rotor bearings. For instance, elevated levels of mechanical stress are prevalent as the rotor is exposed to very high wind loads.

Although rotational speeds are relatively low at 5 to 20 rpm, the main rotor bearing has to be capable of withstanding both radial and axial loads, including the resulting bending movement of the rotor shaft. NSKHPS high performance spherical roller bearings featuring a high load factor have been developed specifically for applications of this type, and are manufactured and heat treated in accordance with NSK’s internal Wind Standard U 303. The breadth of the new range means that a selection of different designs are available.

 
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