AS 1403-1985

1 - AS 1403-1985 DESIGN OF ROTATING STEEL SHAFTS
4 - PREFACE
4 - CONTENTS
5 - FOREWORD
6 - SPECIFICATION
6 - 1 SCOPE.
6 - 2 REFERENCED DOCUMENTS.
6 - 3 DEFINITIONS.
6 - 3.1 Applied loading
6 - 3.2 Equivalent rotational mass moment of inertia of a shaft and its associated components
6 - 3.3 Stress-raising characteristic
6 - 4 NOTATION.
7 - 5 APPLIED LOADING.
7 - 6 MINIMUM CALCULATED DIAMETER OF SHAFT.
7 - 6.1 Minimum calculated diameter.
7 - 6.2 Solid shafts.
7 - 6.3 Hollow shafts.
7 - 7 SHAFT DESIGN AND MANUFACTURE.
7 - 7.1 Shaft material.
7 - 7.2 Shaft diameters.
8 - 7.3 Stress-raising characteristics
8 - 7.4 Welding on shafts.
8 - 7.5 Splines and keyways.
8 - 7.6 Deflection.
8 - 8 SHAFT DESIGN FACTORS.
8 - 8.1 Size factor
8 - 8.2 Stress-raising factor
19 - APPENDIX A - ‘TRIAL’ SHAFT DIAMETER
20 - APPENDIX B - ITERATIVE METHOD FOR CALCULATING MINIMUM DIAMETER OF SHAFT
21 - APPENDIX C - CHARACTERISTICS OF MOTOR CONTROLLERS AND TORQUE-LIMITING DEVICES
21 - C1 INTRODUCTION.
21 - C2 EFFECT OF MOTOR CONTROLLERS ON SHAFT LOADING.
21 - C3 EFFECT OF TORQUE-LIMITING DEVICES ON SHAFT LOADING.
23 - APPENDIX D - TYPICAL WORKED EXAMPLE- CRANE DRIVING MECHANISM
23 - D1 SCOPE.
23 - D2 DATA.
25 - D3 CALCULATIONS.
31 - APPENDIX E - TYPICAL WORKED EXAMPLE- CRANE HOIST DRIVE
31 - E1 SCOPE.
32 - E2 DATA.
32 - E3 ANALYSES OF LOADS FOR THE PURPOSE OF DETERMINING THE MINIMUM DIAMETER OF SHAFT 1.
37 - APPENDIX F - TYPICAL WORKED EXAMPLE-CONVEYOR DRIVE
37 - F1 SCOPE.
37 - F2 DATA.
39 - F3 CALCULATIONS.

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.