Floating Double Roller Bearing Pillow Block F-DPB-08-OPN-S for 1/2" Shaft, ScrapersFloating Double Roller Pillow Block Bearing (DPB 08) for a 1 2" Diameter Shaft, which has two sets of 3 opposing roller bearings while maintaining the standard size open bearing profile of a Single Roller Pillow Block (SPB); thus the term "Double." By contrast, a Twin Roller Pillow Block (TWN) also has two sets of 3 opposing roller bearings, but the TWN blocks are double sized as if they were two SPBs fused together. Use this floating "F" part number