The NTN UCUP209D1 is a genuine NTN pillow block bearing unit featuring a robust cast iron housing (P209 series) and a reliable UC209D1 insert bearing with set screw locking. Designed for standard duty industrial applications, it offers a 45mm bore diameter, 184mm overall length, 102mm overall height, and a base to center height of 54mm. This unit ensures secure mounting with 140mm bolt hole spacing and M16 bolt size, providing efficient performance and durability.