ISO 4301-5:2025
(Main)Cranes — Classification — Part 5: Bridge and gantry cranes
Cranes — Classification — Part 5: Bridge and gantry cranes
This document establishes a general classification of bridge and gantry cranes and their mechanisms based on the service conditions, mainly expressed by the following: a) total number of working cycles to be carried out during the specified design life of the crane; b) the load spectrum factor which presents the relative frequencies of loads to be handled; c) the average load displacements.
Appareils de levage à charge suspendue — Classification — Partie 5: Portiques et ponts roulants
General Information
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Standards Content (Sample)
International
Standard
ISO 4301-5
Second edition
Cranes — Classification —
2025-01
Part 5:
Bridge and gantry cranes
Appareils de levage à charge suspendue — Classification —
Partie 5: Portiques et ponts roulants
Reference number
© ISO 2025
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Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms. 1
5 Group classification . 2
6 Mechanism classification . 3
7 Average displacement calculations. 3
Annex A (informative) Guidance for conversion from time-based to cycle-based mechanisms . 5
Bibliography . 7
iii
Foreword
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This document was prepared by Technical Committee ISO/TC 96, Cranes, Sub-Committee SC 9, Bridge and
gantry cranes.
This second edition cancels and replaces the first edition (ISO 4301-5:1991), which has been technically
revised.
The main changes are as follows:
— a new approach for the classification of cranes and mechanisms by introducing the cycle-based
classification following ISO 4301-1:2016 for bridge and gantry crane equipment.
A list of all parts in the ISO 4301 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
International Standard ISO 4301-5:2025(en)
Cranes — Classification —
Part 5:
Bridge and gantry cranes
1 Scope
This document establishes a general classification of bridge and gantry cranes and their mechanisms based
on the service conditions, mainly expressed by the following:
a) total number of working cycles to be carried out during the specified design life of the crane;
b) the load spectrum factor which presents the relative frequencies of loads to be handled;
c) the average load displacements.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 4301-1, Cranes — Classification — Part 1: General
ISO 4306-1, Cranes — Vocabulary — Part 1: General
ISO 4306-5, Cranes — Vocabulary — Part 5: Bridge and gantry cranes
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4301-1, ISO 4306-1, ISO 4306-5,
and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
powerplant crane
bridge or gantry crane used to carry out construction and maintenance of power generating equipment
often requiring precision movements (e.g. removal of armature shaft for electric generator in hydroelectric
power station)
4 Symbols and abbreviated terms
The main symbols used in this document a
...
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