JD8959 Bearing Cone Fits John DeereOne New Aftermarket Replacement Bearing Cone for John Deere (JD) Equipment This aftermarket replacement bearing cone replaces John Deere OEM part number JD8959. Tapered roller bearing cones are precision components used throughout John Deere construction and agricultural equipment drivetrains, axles, and transmissions to handle radial and axial loads. Replacing a worn bearing cone restores proper load transfer, reduces heat buildup, and prevents