AS ISO 6746.1:2021 Earth-moving machinery一Definitions of dimensions and codes Part 1: Base machine.
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ISO 6746-1 was prepared by Technical Committee ISO/TC 127, Earth-moving machinery, Subcommittee SC 4, Commercial nomenclature, classification and rating.
This third edition cancels and replaces the second edition (150 6746-1:1987), which has been technically revised.
ISO 6746 consists of the following parts, under the general title Earth-moving machinery — Definitions of dimensions and codes:
— Part 1: Base machine
— Part 2: Equipment and attachments
A single capital letter shall be used to indicate the type of base-machine dimension, according to
H = height (see Annex A);
W= width (see Annex B);
L = length (see Annex C];
R = radius (see Annex D];
A = angle (see Annex E).
More than one reference number may be added to the appropriate capital letter, depending on the needs of the specific earth-moving base machine for which a standard or commercial specification is being developed.AS ISO 6746.1 pdf download.