Four row tapered roller bearings are produced in the TQO and TQI designs. The main difference is the configuration, or arrangement, of the roller and cage assemblies and the number of inner and outer rings dictated by this. TQO bearings are, however, used almost exclusively.
Horton Bearing Services produces an extensive range of Four row tapered roller bearings which covers not only the conventional designs with intermediate rings between the outer and/or inner rings , but also a new design with modified rings which integrate the intermediate rings . The particular advantages of Bearing 430TQO570-2 without intermediate rings which have been developed by Horton Bearing Services include:
simpler mounting because of fewer components
improved load distribution over the four rows of rollers, leading to less wear and longer service life
simpler axial location on the roll necks because of reduced inner ring width tolerances
dimensional equivalence to conventional four-row tapered roller bearings with intermediate
To enable Bearing 430TQO570-2 advantages to be exploited in all applications, Bearing 430TQO570-2 of conventional design with intermediate rings produced by SKF are gradually being converted to the new design.
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