ISO 7457:1997

Name: ISO 7457:1997 — Earth-moving machinery — Determination of turning dimensions of wheeled machines
SKU: ISO 7457:1997
Price: 25 EUR
Availability: InStock

Earth-moving machinery — Determination of turning dimensions of wheeled machines

Название (английский):

ISO 7457:1997

Earth-moving machinery — Determination of turning dimensions of wheeled machines

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 10
Дата публикации:: 11 декабря 1997 г.
Издание:: ISO IS 7457 edition 2 version 1
ICS:: 53.100

Тип поставки:

Full version25 €Ask AI2 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:1 рабочий день

Цена:25 €

Описание (английский):

La présente Norme internationale spécifie les méthodes permettant de déterminer le rayon de braquage, le diamètre de braquage, le diamètre de dégagement de l'engin et les diamètres de dégagement des pneus intérieurs et extérieurs, décrits dans le plan horizontal par un engin de terrassement à roues muni de son équipement et de ses accessoires quand il exécute une rotation. La présente Norme internationale est applicable à tous les types d'engin de terrassement à roues directrices, quel que soit le type de direction utilisé.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 7457:1997 specifies standardized methods for determining the turning dimensions of wheeled earth‑moving machinery. The standard defines how to measure and report the turning radius, turning diameter, machine clearance diameter, outer and inner tyre clearance diameters, and the non‑stop 180° turn width for steerable wheeled machines. It applies to all steerable wheeled earth‑moving machinery regardless of steering type, with special provisions for skid‑steer machines (calculated from drawings).

Key topics and technical requirements

Definitions and geometry: Clear definitions of turning centre, turning diameter/radius, machine clearance diameter and tyre clearance diameters (see figures in the standard).

Test area: A compacted or paved, visually flat surface (≤ 3% grade), good tyre adhesion and legible markings.

Test equipment: Basic measuring tools such as a steel tape (readable to 1 cm), plumb line and, where required, pedal‑effort measurement apparatus.

Preparation and loading state: Tyre sizes and pressures set to manufacturer recommendations; movable equipment in transport position; load states specified (e.g., tractor‑scrapers/dumpers at rated maximum gross mass; wheel loaders, tractors, excavators and graders at empty machine mass plus specified attachments and operator).

Test procedure:

Perform full‑lock turns (right and left) at the lowest practicable speed.
Mark tyre and machine projection points using a plumb line and measure diameters at not less than three equally spaced points; compute averages.
Repeat each test three times and record the mean turning dimensions.
Optionally determine diameters by calculation from three measured circumference points.

Skid‑steer exception: Turning centre and diameters determined by calculation from drawings; some tyre clearance definitions are not applicable.

Braked test option: Optional tests with inside non‑steered wheel brake applied at 450 N (or wheel‑locking effort if less) - results reported “with brakes”.

Reporting precision: Linear dimensions reported in metres, correct to two decimal places. Required test report items include manufacturer, model/serial, equipment, tyre sizes/pressures, track widths and all measured diameters.

Applications and users

ISO 7457:1997 is used by:

Equipment manufacturers for design verification and specification sheets.

Test labs and OEM validation teams for performance testing and compliance.

Fleet purchasers and specifiers comparing turning performance of wheel loaders, graders, dumpers, tractors and skid‑steer machines.

Site planners and transport/logistics teams assessing manoeuvring clearance and road/yard space requirements.

Regulatory and certification bodies assessing machine dimensional performance.

Related standards

ISO 5010:1992 - Steering requirements for rubber‑tyred machines

ISO 6165:1997 - Vocabulary for earth‑moving machinery types

ISO 9248:1992 - Units, measurement accuracies and tolerances

Keywords: ISO 7457:1997, turning radius, turning diameter, machine clearance diameter, tyre clearance diameter, earth‑moving machinery, wheeled machines, turning circle test.

ISO 7457:1997

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

ISO 9248:1992

Earth-moving machinery — Units for dimensions, performance and capacities, and their measurement accuracies

ISO 8212:1986

Soaps and detergents — Techniques of sampling during manufacture

ISO 20662:2020

Ships and marine technology — Hopper dredger supervisory and control systems

ISO 3021:2023

Adventure tourism — Hiking and trekking activities — Requirements and recommendations

ISO 3826-2:2008

Plastics collapsible containers for human blood and blood components — Part 2: Graphical symbols for use on l…

ISO/IEC 24730-1:2014

Information technology — Real-time locating systems (RTLS) — Part 1: Application programming interface (API)

ISO 8668-5:1992

Aircraft — Terminal junction systems — Part 5: Detail specification for type 3 system

ISO 7574-3:1985

Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and e…