This genuine McCormick 642239M1 ball bearing is a critical component for various Massey Ferguson, Landini, and McCormick agricultural machines. With an inner diameter of 40mm, an outer diameter of 80mm, and a width of 18mm, this robust bearing ensures smooth operation and reliable performance. It is also cross-referenced as Massey Ferguson 642239M91 and is suitable for a wide range of tractor series including MF 100, 200, 300, 500, 600, 800, 1000, 2000, 3000, 4000, 5000, 6000, 8000, Landini 5830-19000 series, and McCormick CX, MC, MTX, XTX, ZTX series.