Page 685 - Rollingbearings
P. 685

Loads
           Calculating the radial                                                                         Fig. 19
           load acting on                                                         Matched bearings arranged face-to-face,
                                                                                  radial load
           matched bearings

           When matched tapered roller bearings,
           arranged face-to-face or back-to-back, are
           mounted together with a third bearing, the
           bearing arrangement is statically indetermin-
           ate. In these cases, the radial load F  acting
                                    r
           on the bearing pair must be calculated irst                                            F r
           Matched bearings arranged
           face-to-face

           For matched bearings, where two bearings
           are arranged face-to-face (ig. 19), it can be
           assumed that the radial load acts at the
           geometric centre of the matched bearings,
           as the distance between the pressure
           centres of the two bearings is short when
           compared with the distance between the
           geometric centres of the set and the other
           bearing  In this case, it can be assumed that
           the bearing arrangement is statically
           determined








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