AS ISO 7457:2021 pdf free.Earth-moving machinery一Determination of turning dimensions of wheeled machines.
AS ISO 7457 specifies methods for determining the turning radius, turning diameter, machine clearance diameter, and inside and outside tyre clearance diameters, described in the horizontal plan by a wheeled earth-moving machine with its equipment and attachments when executing a turn.
This International Standard is applicable to all types of steerable wheeled earth-moving machinery. It is applicable irrespective of the type of steering used.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of I EC and ISO maintain registers of currently valid International Standards.
ISO 50 10:1992, Earth-moving machinery — Rubber-ty red machines — Steering requirements.
ISO 6165:1997, Earth-moving machinery — Basic types — Vocabulary.
ISO 9248:1992, Earth-moving machinery — Units for dimensions, performance and capacities, and their
measurement accuracies.
3 Definitions
For the purposes of this International Standard, the definitions given in ISO 6165 and the following apply.
3.1 turning centre Point about which all turns of constant radius are made. (See figure 1.)
3.2 turning diameter Diameter of the circular path described by the centre of tyre contact with the surface of the test site of the wheel describing the largest circle when the machine is executing its sharpest practicable turn under the test conditions described in clause 7. or by calculation for skid steer loaders. (See figure 1.)
3.3 turning radius Half the turning diameter (as defined in 32). (See figure 1.)
3.4 machine clearance diameter Diameter of the smallest circle which will enclose the outermost points of projection of the machine and its equipment and attachments when it executes its sharpest practical turn, under the conditions described in clause 2 or by calculation for skid steer loaders. (See [igurei.)AS ISO 7457 pdf download.
Tags: Earth-moving machinery
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