Foreword

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This document was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 7, Equipment for harvesting and conservation.

This second edition cancels and replaces the first edition (ISO 4254‑13:2012), which has been technically revised.

The main changes are as follows:

— additional information has been added to the Scope regarding applicability;
— the Normative references have been updated;
— in Clause 3:
- — some terms and definitions have been modified, added or removed;
- — former Figure 1 has been removed and subsequent figures have been renumbered;
— blade test and performance requirements have been moved to ISO 5718‑2;
— in Clause 4, subclauses 4.8, 4.9, 4.10 and 4.11 have been revised to reflect the strength and performance requirements in the standards concerned;
— in Clause 5:
- — title has been revised;
- — Figure 2 (former Figure 3) has been modified;
- — Figure 3 (former Figure 4) has been modified;
- — 5.2.2.3 has been added to indicate a test condition;
- — 5.3.1.4 has been modified to indicate new requirements for test equipment;
- — 5.4.1.4 has been added to indicate new requirements for test equipment;
- — 5.4.5 test acceptance criteria has been modified;
- — 5.5.4 test acceptance criteria has been modified;
- — subclause 5.7 and succeeding subclauses have been removed;
- — subclause 5.8 and succeeding subclauses, including Table 1 and Figure 12, have been removed;
- — 5.6.2.6 has been modified to correct an error in the sand particle size requirements for test equipment;
— the Bibliography has been updated.

A list of all parts of ISO 4254 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.

BS ISO 4254-13:2023

Agricultural machinery. Safety - Large rotary mowers

Current

Published:

30 Jun 2023