Described in detail aligning thrust roller bearing preload improvements

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    Thrust Spherical Roller Bearings From a structural point of view, the tight ring of the bearing roller cage locked by the bush to the overall separation between the live ring an d the overall is separable. The lower bearing installed in the vertical by means of bearings, shaft and shaft the weight of other parts, so tight, non-state of separation between living circle. Both ends of the bearing of the upper and horizontal installation vertical installation, usually, the bolts will compress the end cap pressed back a certain distance (0.2-1mm), in order to avoid too small due to the clearance in The operation temperature difference caused by the phenomenon of bearing stuck. The gap appeared, such as the gap is too large, it will form a state of separation between the components and the living circle of the tight circle, so reasonable pretension to prevent the rolling elements spin and revolution skidding, you can keep rolling element raceway the correct position.high speed bearings
    The bearing work properly, it is necessary to exert a certain amount of axial load, the required minimum axial load as:

    Fa mim = Coz/1000

    The Fa mim ------- minimum axial load (KN)

    The Coa ------------- Basic static load rating (KN)

    2004, Benxi Iron and Steel Company mill hot strip mill 1700 supporting the production of thrust-aligning roller bearings 292/500 bearing, the bearing face to face two sets installed in the mill backup roll to withstand the axial force. It face to face horizontally mounted bearing, in order to prevent the bearing from work, stuck with end cover bolts pressed after the release of more than 0.2mm distance. At the same time to avoid the work roll bending, thrust bearings to withstand the radial force, taken between the axle box hole and live ring outer diameter 2mm, with the gap, intermittent force, more likely to have stuck, and even bearing another withstand loc al impact and damage.ball bearing suppliers

    After the analysis that this compression method is irrational, but can only think of ways to study design in the side surface of the bearing ring 8 cloth spring holes, and install 8 3 mm in diameter on the bearing design springs, each spring maximum spring force of 800 Newton, such bearings installed in the bearing and compression cover, due to the spring force of the first direct role in the bearing and the cover-side surface, so that when the journal to the about displacement float, it can guarantee the correct position of the rolling element raceway. Roller and the raceway start to finish in good contact state. Preloaded purpose is basically to achieve under a rocky ledge axial force, the spring hole in the cylindrical Shaw in the role of the spring force, the first contact with bearing and cover plate, the axial force had buffer, so that the original bearing damage been resolved, the bearing life is greatly extended, to meet user requirements, users praise.high speed bearing