AS 1403-2004

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Design of rotating steel shafts

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This Standard provides formulae for the design of rotating steel shafts that are subjected to torsional, bending and axial-tensile loads either singly or in combination, on the basis of infinite life.

Header

About this publication

Preface

Foreword

1 Scope

2 Referenced documents

3 Definitions

4 Notation

5 Applied loading

6 Minimum calculated diameter of shaft

6.1 Minimum calculated diameter

6.2 Solid shafts

6.3 Hollow shafts

7 Shaft design and manufacture

7.1 Shaft material

7.2 Shaft diameters

7.3 Stress-raising characteristics (see Clause 8.2)

7.4 Welding on shafts

7.5 Splines and keyways

7.6 Deflection

8 Shaft design factors

8.1 Size factor (Ks)

8.2 Stress-raising factor (K)

Appendix A

Appendix B

Appendix C

C1 Introduction

C2 Effect of motor controllers on shaft loading

C2.1 Motor controllers for a.c. motors

C2.2 Motor controllers for d.c. motors

C3 Effect of torque-limiting devices on shaft loading

C3.1 Fluid couplings

C3.2 Friction clutches

C3.3 Eddy current clutches

Appendix D

D1 Scope

D2 Data

D2.1 General

D2.2 Data available to carry out subsequent calculations

D3 Calculations.

D3.1 General

D3.2 Selection of the appropriate formula

D3.3 Basic calculations

D3.3.1 Calculation of rotational speeds

D3.3.2 Calculation of moments of inertia

D3.4 Analysis of the driving system

D3.4.1 Basic torque calculations

D3.4.2 Calculation of the angular acceleration of the driving medium

D3.4.3 Calculation of input torque for shaft 2

D3.4.4 Calculation of forces arising at the gears and reactions arising at the bearings for shaft 2

D3.5 Calculations of bending moments

D3.6 Calculation of shaft diameter

D3.6.1 Selection of various factors

D3.6.2 Calculation of minimum shaft diameter

D3.6.3 Checking of actual shaft diameter

D3.7 ‘Trial’ diameter method

Appendix E

E1 Scope

E2 Data

E2.1 General

E2.2 Data available to carry out subsequent calculations.

E3 Analyses of loads for the purpose of determining the minimum diameter of shaft 1

E3.1 Basic calculations

E3.1.1 Calculation of rotational speeds

E3.1.2 Calculation of moment of inertia.

E3.2 Analysis while hoisting the maximum load

E3.2.1 Basic torque calculations

E3.2.2 Calculation of the angular acceleration of the driving medium.

E3.2.3 Calculation of the output torque for shaft 1

E3.2.4 Calculation of forces arising at the gear and reactions arising at the bearings for shaft 1 (see Figure E2)

E3.2.5 Calculation of maximum bending moment at the centre-line of the pinion

E3.2.6 Calculation of shaft diameter

E3.2.7 Establishing shaft geometry

E3.2.8 Checking of shaft diameter

E3.2.9 Calculation/checking of minimum shaft diameter.

E3.3 Analysis while lowering the maximum load and applying the maximum braking torque

E3.3.1 Calculations of angular acceleration of the driving medium

E3.3.2 Calculation of the output torque for shaft 1

E3.3.3 Calculation of forces arising at the gear and reactions arising at the bearings for shaft 1

E3.3.4 Calculation of maximum bending moment at the centreline of the pinion

Appendix F

F1 Scope

F2 Data

F2.1 General

F2.2 Data available to carry out subsequent calculations

F3 Calculations

F3.1 Calculation of system acceleration

F3.2 Calculation of torque on pulley shaft

F3.3 Calculation of forces acting on pulley shaft due to belt tensions

F3.4 Calculation of force on drive pulley shaft extension due to drive (see Figure F4)

F3.5 Selection of formula for calculating shaft diameter