Overview
ISO 7133:2013 - Earth‑moving machinery - Scrapers - Terminology and commercial specifications defines standardized terminology and the required content of commercial literature for scrapers (including towed scrapers) and their equipment. The third edition (2013) revises earlier editions and provides a common basis for describing scraper types, dimensions, masses, modes of operation and commercial specification data in SI units.
Key topics and technical requirements
ISO 7133:2013 focuses on clear, unambiguous definitions and the information that manufacturers and vendors should provide in product literature. Core technical topics include:
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Terms and definitions
- Scraper types (self‑propelled, towed)
- Base machine, equipment, attachments, components
- Mass definitions: operating mass, payload, loaded mass, shipping mass, axle distribution
- Modes of operation: open‑bowl loading, elevated loading, push‑pull (dual loading)
- Performance terms: net power, maximum travel speed, rimpull
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Base machine classification and nomenclature
- Method of loading (open‑bowl vs elevated)
- Steering (front‑wheel vs articulated)
- Number of axles and engines, drive systems (front‑wheel, all‑wheel, centre‑axle, none for towed)
- Standardized component nomenclature and figures for tractor, scraper and attachments
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Dimensions and measurements
- Base machine and towed scraper dimensional references (measured with bowl at highest position)
- Annex A provides scraper‑specific equipment dimensions (normative)
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Commercial literature specification content
- Detailed items to include in product literature: engine (manufacturer, cycle, aspiration, displacement, ISO net power, torque, electrical system), transmission type, drive axle(s), steering, brakes, tyres, hydraulic system, elevated loading drive, bowl and cutting‑edge details, system fluid capacities, masses, hitch vertical load for towed scrapers, towing tractor power requirements, etc.
Practical applications and users
ISO 7133:2013 is useful for:
- Manufacturers creating consistent product data sheets and manuals
- Equipment dealers and marketers producing commercial literature and comparisons
- Procurement and fleet managers specifying scrapers for contracts and tenders
- Engineers and site planners verifying compatibility, towing power and mass distribution
- Standards writers and certification bodies ensuring consistent terminology and test/reporting conventions
By standardizing terminology, dimensions and required specification items, ISO 7133 improves comparability, reduces ambiguity in procurement, and supports safer, more efficient selection and operation of scrapers.
Related standards
Normative and related references include: ISO 5010, ISO 6484, ISO 6485, ISO 6746‑1, ISO 6746‑2, ISO 7457, ISO 9249 (and related engine/test code documents referenced within the standard). These provide complementary definitions, volumetric ratings and test methods.
