Forage harvester shear bar with concave cutting surface

Details Forage harvester shear bar with concave cutting surface Forage harvester shear bar with concave cutting surface

A - Human Necessities

01

D

56/60

A01D 34/42 (2006.01) A01F 29/06 (2006.01) B02C 18/18 (2006.01) B26D 1/38 (2006.01) B26D 7/26 (2006.01)

Patent

CA 1191352

FORAGE HARVESTER SHEAR BAR WITH CONCAVE CUTTING SURFACE Abstract of the Disclosure A forage harvester shear bar having a first surface across which crop material is fed for cutting by the harvester cutterhead. A cutting surface perpendicular to the first surface forms a cutting edge therein. The shear bar is arched upwardly by clamping against an arched support to provide enhanced rigidity and strength. The cutting surface is formed with a concavity therein, prior to being worn by usage in the forage harvester, to provide enhanced ability to achieve optimum, uniform clearance from the cutterhead. The concavity in the cutting surface provides compensation for the arch formed in the shear bar.

427009

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