The Koyo 138326 is a genuine Koyo UCF309 bearing unit, designed for robust performance in various industrial machinery applications. This complete bearing block features a 45mm bore diameter, an overall length of 175mm, an overall width of 130mm, and an overall height of 130mm. It weighs approximately 2.70 kg and has bolt hole centers of 140mm, ensuring secure mounting. Koyo UCF309 units are known for their durability and reliability in demanding environments.