Goodyear Rubber Products

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�                                                                         Shafting
VAN GORP'S STANDARD SHAFTING IS AISI 1045, WHICH REPRESENTS THE HIGHER CARBON RANGE IN
THE OPEN HEARTH CARBON GROUP. ITS MECHANICAL PROPERTY ADVANTAGES OVER LOWER CARBON
STEELS PROVE ESPECIALLY VALUABLE FOR TRANSMISSION SHAFTING. THE HIGHER CARBON CONTENT
IN AISI 1045 RESULTS IN ONE OF THE STRONGEST STEELS IN THE CARBON RANGE, EXCLUDING ALLOY
STEELS, AND MACHINES TO A SMOOTHER FINISH THAN AISI 1018.
SHAFT DEFLECTION SHOULD BE CLARIFIED BECAUSE MANY CUSTOMERS ASSUME THAT AN ALLOY STEEL
WILL HAVE LESS DEFLECTION THAN A LOW OR MEDIUM CARBON STEEL. THIS ASSUMPTION IS NOT
CORRECT. THE PRINCIPAL OF SHAFT DEFLECTION IS QUOTED FROM THE PUBLICATION OF DELAVAL
STEAM TURBINE COMPANY IN TRENTON, NEW JERSEY, ENTITLED "USEFUL DATA FOR DETERMINING
STRESSES, TORQUES, BENDING MOMENTS AND DEFLECTIONS IN STEEL SHAFTS", AS FOLLOWS:
          "Where an untreated carbon steel shaft is not strong enough, considerable improvement can be obtained by heat treatment
          and much more by the use of heat treated alloy steels, but if greater stiffness or rigidity is required, no improvement results
          from heat treatment or the use of better materials as deflection is entirely unrelated to strength.
          "Unless the length or span is reduced, the only way that the deflection can be reduced is by INCREASING the size of the
          shaft as the modulus of elasticity of all steel is practically the same.
          "In many cases when a shaft is made large enough to secure the required rigidity, the stress may be low enough that low
          strength steel may be entirely satisfactory unless greater hardness is required for other reasons."
PLEASE REMEMBER, EXCESSIVE SHAFT DEFLECTION IS THE MAJOR CAUSE OF CONVEYOR PULLEY
FAILURES. IT IS WISE TO BE GENEROUS IN SELECTING THE PROPER SHAFT DIAMETER FOR YOUR
PARTICULAR SHAFT AND PULLEY APPLICATION.
When ordering shafting, specify the following:                     4.  Diameter and length of journal, if required
1.  Diameter and length                                            5.  Bearing Centers
2.  Number and size of keyways required
3.  Length of shaft which extends beyond each end                  If possible, furnish a simple sketch of the pulley and
     of the pulley                                                 shaft, as this will help eliminate errors.
                                                                                                          Length of
                                                                                                          Keyway if
                                                                                                          Required
          Shaft Dia.
                                                                                              Size of
                                                                                              Keyway if
                                                                                              Required
                                                                                                                 American Made
30

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CALL TOLL FREE IN THE USA 1-866-711-4673

INTERNATIONAL SALES CALL +1-727-342-5086 WE SHIP WORLDWIDE

CALL TOLL FREE
IN THE USA
1-866-711-4673

INTERNATIONAL SALES CALL
+1-727-342-5086
WE SHIP WORLDWIDE