| 摘要 |
A forage harvester cutterhead includes knife holders which each, in one embodiment, form a major portion of a smooth, curved impeller blade surface, which in a second embodiment form a portion of an impeller blade surface with the major portio n of the impeller blade surface being defined by a replaceable sheet metal insert that is held in place by a rail located in a recess of the knife holder, and which in a third embodiment for m a portion of an impeller blade surface with a major portion of the impeller blade surface being defined by a surface of an appendage of a replaceable rail located in a recess of the kni fe holder.
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