NF ISO 5718-1, U31-013-1 (06/2023)

This document specifies requirements for blades used as cutting elements on rotary disc mowers and rotary drum mowers, used only in agriculture for harvesting forage (as defined in ISO 4254-12) which are carried, semi-mounted, trailed or self-propelled. It specifies testing and marking requirements for these blades. This document does not apply to blades used on: — mower-mulchers; — large rotary mowers covered by ISO 4254-13; — hand-operated mowers; — walk-behind mowers; — lawn mowers covered by the ISO 5395 series. NOTE 1 The main objective of this document is to determine the characteristics of materials. The blades of rotating disc mowers and rotating drum mowers are exposed to considerable centripetal forces and impacts with foreign objects. A bend test and an impact resistance test intended to verify the fragility and strength of the material are therefore included in this document. NOTE 2 This document does not specify dimensional requirements.
(Automatic translation from French)