AS 1403-1985

Provides formulas, on the basis of infinite life, for the design of rotating steel shafts which are subjected to torsional, bending, and axial-tensile loads. It does not apply to shafts specially developed and tested in laboratories or in the field and to shafts for specific applications. A method of establishing a 'trial' diameter, an iterative method of calculating minimum diameter, details of the characteristics of motor controllers and torque-limiting devices, and three worked examples are given in appendices.

This standard applies to the design of rotating steel shafts which are subjected to torsional, bending and axial-tensile loads either singly or in combination, on the basis of infinite life. The standard does not apply to shafts specially developed, e.g. those involving extensive laboratory and field testing, heat treatment and like developments, or to shafts for specific applications such as automotive and construction equipment transmissions.NOTES:Particular consideration has to be given to deflections of long shafts where the effects of out-of-balance forces tend to induce 'whipping', and to long shafts which are subject to buckling due to compressive loading (see Foreword). The use of this method of shaft design enables justification of the use of shafts of minimal diameter. Where the designer conservatively sizes a shaft, then only those calculations necessary to ensure that the shaft complies with this standard (see Clause 5) are required.