Floating Single Roller Pillow Block Bearing F-SPB-20-OPN-S for 1.25" Shaft Diameter, ScraperFloating single roller pillow block bearing for a 1. 25" shaft diameter. Use a floating linear pillow block on one shaft and a standard linear bearing pillow block on the other to compensate for misalignment. This design is unique to most other offerings. Floating single roller bearing pillow block; order F SPB floaters for one shaft and standard roller pillow blocks for the other Use with 1. 25 Inch Diameter Shaft Open bearing style Beryllium copper