TS 4803

TS 4803 is a terminology and symbol standard for the dimensions of earth-moving machinery, covering the way the main machine and its associated equipment are designated. It provides a common technical language for basic earth-moving machines used in roadworks, dams, canals, sites, trenches and similar operations, so their size, arrangement and equipment relationships can be described consistently.

A shared technical language for the base machine and equipment

In standards of this kind, the key goal is consistent meaning across different machine types. The base machine refers to the core structure of the machine, including the main body, running gear and power unit that carry the primary function. Equipment refers to attached or auxiliary devices used for tasks such as excavating, loading, transporting, spreading or compacting. Standardising dimensions and symbols reduces ambiguity in catalogues, technical drawings, comparative data and general machine descriptions.

Why dimensional terminology matters in earth-moving machinery

Earth-moving machinery is a broad family of equipment that moves, shapes and redistributes soil and other materials. The family may include excavators, loaders, bulldozers, graders and related machines, but the focus of this standard is not performance testing; it is how dimensions are identified and represented. Clear dimensional terminology helps with machine layout, working envelope discussion and comparison of data from different manufacturers.

This listing corresponds to the withdrawn edition and was issued as equivalent to ISO 6746-1 and ISO 6746-2:1980. It remains useful as a conceptual reference for the terminology and symbol system used in earth-moving machinery documentation.