The Case IH ST405 is an authentic OEM ball bearing, precisely engineered with an inner diameter of 40mm, an outer diameter of 80mm, and a width of 18mm. Weighing approximately 0.45 kg, this durable component is designed to ensure smooth operation and reliable performance in various Case IH JXC series agricultural tractors, including models like JXC75, JXC85, JXC95, JXC105, JXC110, JXC115, JXC120, JXC125, JXC130, JXC135, and JXC140. It is a critical replacement part for maintaining the integrity and efficiency of your machinery's rotating assemblies.