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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,
                                                            SINGLE WIDTH CENTRIFUGAL (HORIZONTAL MOUNT)                                                                                                                          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

                           Arrangements                                                     Arrangements                                                        Arrangements                                                                 Split Roller Type - (1) fixed; (1) floating
                  1, 8, 9, 9F, 9ST, 9SS, 10                                                           3 & 7                                                        3SI* & 7SI*                                                           301 F and above
                                                                                                                                                                                                                                               o
                                                                                                                                                                                                                                              All Types – (1) fixed; (1) floating



                      DOUBLE WIDTH CENTRIFUGAL (HORIZONTAL MOUNT)                                                                                                     *Ball Type Bearings 300 F and
                                                                                                                                                                                                                 o
                                                                                                                                                                        below may require one fixed
                                                                                                                                                                            and one floating bearing







                                                                                                                                                                                                                                              FIXED BEARING                      FLOATING BEARING
                                                                                                                                                                                                                                                Also Know As:                         Also Know As:
                                                                                                                                                                                                                                          Non Expansion Bearing                    Expansion Bearing
                                                                                                                                                                                                                                                                                 Non-Locating Bearing


                            Arrangements                                                                         Arrangements
                                 3, 3F, & 7                                                                        3DI* & 7DI*
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