Double Roller Bearing Pillow Block DPB-20-OPN-S 1.25" ID - ScrapersDouble Roller Pillow Block Bearing (DPB) with an open bearing style for a 1. 25" Diameter Shaft, which has two sets of 3 opposing roller bearings while maintaining the standard size 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 twice the size as if they were two SPBs fused together. Double the load capacity of