ISO 8909-1:2021 pdf download – Equipment for harvesting — Forage harvesters — Part 1: Vocabulary. 4.2.2.3 flail? cutter device using multiple, radially attached blades that are mounted to pivot on a horizontal rotor Note 1 to entry: Each blade has a transversely cutting edge to cut off crop by impact. Note 2 to entry: The rotor is positioned transverse to the direction of travel. 4.2.3 rotary disc disc on the head row unit used to shear off the crop Note 1 to entry: There are two systems: the one-disc rotary knife system requires a stationary knife against which to shear...