Abstract: A tensioning system for a drive belt of a blower of a forage harvester includes a tensioning roller, a rod for moving the tensioning roller towards and away from the belt, a spring surrounding the rod and acting between a first abutment mounted on the rod and a second abutment connected to the chassis of the harvester to urge the roller towards the belt. The chassis connected abutment is carried by an arm that is movable relative to the chassis and anchored by a tie bar.

Abstract: A spring system for a feeder device of an agricultural harvester having a first roller movably mounted in a casing and biased by the spring system towards a second roller in order the compress crop passing between the two rollers. The spring system comprises at least one spring surrounding a guide rod that extends in use between a movable support of the first roller and the casing of the feeder device. The guide rod is formed of two telescopically collapsible parts, one connected to the roller support and the other to the casing.

Abstract: A roller assembly for a belt drive system of an agricultural machine, the roller assembly having a shaft, a roller rotatably mounted on the shaft, and adjustment means for adjusting the position of the shaft. The adjustment means includes means for angular adjustment of the position of the shaft in two distinct directions.

Abstract: A forage harvester is provided with a crop processor roll assembly that comprises a shaft and a removable crop processor roll having a fluted surface for cracking maize kernels. The roll has end plates, to which the shaft is connected by sleeves. The interior of the sleeve is joined to the shaft by two interference or press fits, and to the roll by a third press fit.

Abstract: A spring system is described for a feeder device of an agricultural harvester having a first roller movably mounted in a casing and biased by the spring system towards a second roller in order the compress crop passing between the two rollers. The spring system comprises at least one spring surrounding a guide rod 200 that extends in use between a movable support of the first roller and the casing of the feeder device. The guide rod 200 is formed of two telescopically collapsible parts 210, 212, one connected to the roller support and the other to the casing.

Abstract: A roller assembly (30) for a belt drive system (1) of an agricultural machine, the roller assembly (30) having a shaft (50), a roller (20, 22) rotatably mounted on said shaft (50), and adjustment means for adjusting the position of the shaft (50). The adjustment means comprise means (62, 64) for angular adjustment of the position of the shaft (50) in two distinct directions (X, Y).