As 3819.1-1998 Heavy Duty Towing Components 70 MM and 110 MM Diameter Towballs For Heavy Duty Couplings
As 3819.1-1998 Heavy Duty Towing Components 70 MM and 110 MM Diameter Towballs For Heavy Duty Couplings
As 3819.1-1998 Heavy Duty Towing Components 70 MM and 110 MM Diameter Towballs For Heavy Duty Couplings
1—1998
Australian Standard™
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Australian Standard™
PREFACE
The Standard was prepared by the Joint Standards Australia/Standards New Zealand
Committee ME/53, Semitrailer and Heavy Trailer Couplings.
This Standard is the result of a consensus among Australian and New Zealand
representatives on the Joint Committee to produce it as an Australian Standard.
The Standard applies to heavy duty towballs, of 70 mm and 110 mm diameter, for heavy
duty couplings. These are designed to suit vehicles towing trailers above 3.5 t aggregate
trailer mass (ATM) and for dealing with heavy duty towing components.
This Standard is Part 1 of a series dealing with heavy duty towing components. The other
Part in the series is —
Part 2: Heavy duty coupling bodies for 70 mm and 110 mm ball towballs.
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The term ‘normative’ has been used in this Standard to define the application of the
appendix to which it applies. A ‘normative’ appendix is an integral part of a Standard.
CONTENTS
Page
1 SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 OBJECTIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 REFERENCED DOCUMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5 MECHANICAL PROPERTIES AND PERFORMANCE REQUIREMENTS . . . . . 4
6 DESIGN AND CONSTRUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7 FINISH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
8 PERFORMANCE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
9 MARKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
10 PACKAGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
STANDARDS AUSTRALIA
Australian Standard
Heavy duty towing components
1 SCOPE This Standard specifies requirements for heavy duty couplings, that are
suitable for vehicles towing medium and heavy trailers on sealed and unsealed roads, and
covers two sizes of towballs —
(a) 70 mm for up to 10 t ATM single trailer only; and
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4 DEFINITIONS For the purpose of this Standard, the definitions below apply.
4.1 Aggregate trailer mass (ATM)—the total mass of the laden trailer when carrying
the maximum load recommended by the manufacturer. This includes any mass imposed on
the towing vehicle when the combination vehicle is resting on a horizontal supporting
plane.
COPYRIGHT
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