1. Product Overview 40TM18VZ single row deep groove ball bearing with dimensions 48mm bore × 80mm OD × 16mm width. Equipped with double-sided reinforced VZ rubber contact seals to block dust, fine mud splash and grease leakage. High-precision raceway grinding, standard C0 internal clearance, stable radial & light axial load capacity. Made of full quenched GCr15 chrome steel, widely used in tractor transmission, auto auxiliary gearboxes and medium-duty agricultural equipment.