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Standard
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NBN ISO 8643:2021
Earth-moving machinery — Hydraulic excavator and backhoe loader lowering control device — Requirements and tests
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Summary
This document establishes uniform requirements and test procedures for lowering control devices
fitted on the boom, intermediate boom and arm cylinders of hydraulic excavators and backhoe loaders
to control the rate of drop in the case of a hydraulic line failure or rupture.
It is applicable to the lowering control devices of hydraulic excavators and the backhoe equipment of
backhoe loaders used for object handling which are equipped with the standard linkage as defined by
the manufacturer. On machines where alternative linkage combinations are offered, only the standard
length defined by the manufacturer is subject to testing.
fitted on the boom, intermediate boom and arm cylinders of hydraulic excavators and backhoe loaders
to control the rate of drop in the case of a hydraulic line failure or rupture.
It is applicable to the lowering control devices of hydraulic excavators and the backhoe equipment of
backhoe loaders used for object handling which are equipped with the standard linkage as defined by
the manufacturer. On machines where alternative linkage combinations are offered, only the standard
length defined by the manufacturer is subject to testing.
Technical characteristics
| Publisher | Bureau de Normalisation Belge (NBN) |
| Publication Date | 06/09/2021 |
| Page Count | 22 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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09/06/2021
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