ISO 4301-2-2020 PDF

Full title and description

ISO 4301-2:2020 — Cranes — Classification — Part 2: Mobile cranes. This International Standard establishes a general classification system for mobile cranes and related crane mechanisms based on service conditions, primarily expressed by number of working cycles, a load‑spectrum factor (relative frequencies of handled loads) and average load displacements; it applies to the work spectrum from moderate to very heavy numbers of work cycles for mobile cranes and related mechanisms.

Abstract

ISO 4301-2:2020 defines classification categories for mobile cranes to represent typical states of loading during a crane's design life. The classification system uses parameters including the total number of working cycles over the design life, a load spectrum factor describing relative load frequencies, and typical load travel distances; the standard is intended to help match design, testing, inspection and selection criteria to expected service conditions.

General information

• Status: Published.
• Publication date: 2020-11 (Edition 3, published late 2020).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 53.020.20 (Cranes).
• Edition / version: Edition 3 (2020).
• Number of pages: 8 pages.

Scope

This part of ISO 4301 establishes a classification system for mobile cranes and associated crane mechanisms to quantify service conditions for design, manufacturing and maintenance purposes. It is applicable to basic types of self‑propelled mobile cranes and associated mechanisms (see related vocabulary standards) and covers service spectra from moderate up to very heavy numbers of work cycles as defined in the standard's tables. The classification is intended to be used alongside Part 1 (general rules) and relevant vocabulary documents.

Key topics and requirements

• Classification by expected number of working cycles over the crane's design life (service life categories).
• Use of a load spectrum factor to represent relative frequencies of loads (load spectrum and severity).
• Consideration of average load displacements (typical travel distances) as part of service condition description.
• Applicability to self‑propelled mobile cranes and related mechanisms; intended to inform design, testing, inspection and maintenance planning.
• Harmonisation with ISO 4301-1 (general) and ISO 4306 vocabulary standards for consistent terminology and application.

Typical use and users

Manufacturers, design engineers, structural and mechanical engineers, inspection and certification bodies, procurement and maintenance teams, and regulatory authorities use ISO 4301-2:2020 to classify mobile cranes for appropriate design loadings, inspection intervals and life‑cycle planning. It is also used by standards committees and test laboratories to align test regimes with expected service conditions.

Related standards

Key related standards and documents include ISO 4301-1 (Cranes — Classification — Part 1: General), ISO 4306-1 and ISO 4306-2 (Cranes — Vocabulary), and other parts of the ISO 4301 series addressing different crane types (tower cranes, jib cranes, bridge and gantry cranes). ISO 4301-2:2020 replaces the 2009 edition.

Keywords

mobile cranes, crane classification, service conditions, load spectrum, working cycles, design life, crane inspection, ISO 4301, crane vocabulary

FAQ

Q: What is this standard?

A: ISO 4301-2:2020 is the ISO International Standard that specifies a classification system for mobile cranes based on service conditions such as number of working cycles, load spectrum and average load displacements.

Q: What does it cover?

A: It covers classification categories for mobile cranes and related mechanisms to represent expected loading over the design life; it is used to inform design decisions, inspection and maintenance planning, and to harmonize technical requirements with other parts of the ISO 4301 series.

Q: Who typically uses it?

A: Crane manufacturers, designers, testing and inspection bodies, maintenance planners, procurement teams and regulators commonly use this standard. It is also referenced by standards committees and laboratories.

Q: Is it current or superseded?

A: ISO 4301-2:2020 is the current (2020) edition of Part 2; it replaces the 2009 edition (ISO 4301-2:2009). The standard is maintained by ISO/TC 96/SC 6 and is subject to ISO's systematic review cycle.

Q: Is it part of a series?

A: Yes — ISO 4301 is a multi‑part series on crane classification (Part 1: General, Part 2: Mobile cranes, and other parts for specific crane types); it is intended to be used in conjunction with ISO vocabulary standards (ISO 4306‑1, ISO 4306‑2).

Q: What are the key keywords?

A: Mobile crane classification, service conditions, working cycles, load spectrum, design life, crane inspection, ISO 4301.