A-920-223-AI BearingOne New Aftermarket Replacement Knife Head Bearing Fits International Harvester Fits Case IH Grain Heads This aftermarket replacement knife head bearing Fits International Harvester and Fits Case IH grain head assemblies. The bearing supports the sickle knife head drive on the cutting platform, a critical wear component during harvest operations. It is used on the 810, 820, and Gen III series grain heads as well as the 1010 and 1020 grain head