NF ISO 8643, E58-151 (06/2024)

ISO 8643:2017 establishes uniform requirements and test procedures for lowering control devices mounted on boom, mid-boom or arm cylinders of hydraulic excavators or backhoe loaders to control the rate of fall in case of failure or rupture of the hydraulic circuit. It applies to lowering control devices of hydraulic excavators and shovel equipment of backhoe loaders used for handling objects which are equipped with a standard linkage as defined by the manufacturer. On machines with other connection combinations offered, only the standard length defined by the manufacturer is subject to testing.
(Automatic translation from French)