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FAN-PEDIA                                                                                                                                                                                                                                                BEARINGS

                     Published by
            Twin City Fan & Blower                                                                                                                                                                                           FIXED & FLOATING BEARINGS
                         ©2017                                                                 TCF.COM


                                                                                                                                                                                                                                 OVERVIEW
                                                                                                                                                                                                                                 Two  bearings  support  and  locate  a  shaft
                                                                                                                                                                                                                                 axially and radially in relation to the housing,
                                     AXIAL, MIXED FLOW, TUBULAR CENTRIFUGAL FANS                                                                                                                                                 which is stationary. There is “fixed” side and a
                                                                                                                                                                                                                                 “floating” side. The fixed side controls the shaft
                                                                                                                                                                                                                                 axially. The floating side has more freedom of
                                                                                                                                                                                                                                 movement  (floating)  to  help  compensate  for
                                                                                                                                                                                                                                 thermal expansion or contraction of shaft.




                                                                                                                                                                                                                                         Guidelines for use
                                                                                                                                                                                                                                         300 F and below
                                                                                                                                                                                                                                               o
                                                                                                                                                                                                                                             Ball Type – Use 2 fixed
                                                                                                                                                                                                                                             Roller Type – (1) fixed; (1) floating
                            Arrangement 9                                                   Arrangement 9                                                        Arrangement 9                                                               Split Roller Type - (1) fixed; (1) floating
                               Axial / Mixed Flow                                              Axial / Mixed Flow                                                   Axial / Mixed Flow
                                                                                                                                                                                                                                               o
                            (Vertical Floor Mount)                                         (Vertical Ceiling Mount)                                                 (Horizontal Mount)                                                   301 F and above
                                                                                                                                                                                                                                              All Types – (1) fixed; (1) floating


                                                                                      PLUG FANS










                                                                                                                                                                                                                                              FIXED BEARING                      FLOATING BEARING
                                                                                                                                                                                                                                                Also Know As:                         Also Know As:
                                                                                                                                                                                                                                          Non Expansion Bearing                    Expansion Bearing
                                                                                                                                                                                                                                                                                 Non-Locating Bearing
                                                                                          (Horizontal Mount)                             (Vertical Up Mount)                          (Vertical Down Mount)
          Arrangement 1P, 8, 8P, 9P
                                 Plug Fan                                                                                               Arrangement 9
                         (Horizontal Mount)                                                                                                        Plug Fan
                                                                                                                                                                                                                                                                                                                  74
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