Pillow Block Bearing Base Height 1.25 in Base Width 2.38 in Bearing Insert Material Alloy Steel Bearing Insert Type Tapered Roller Bore Diameter 1 1/2 in Bore Type Cylindrical Center Height 2.125 in Expansion Type Expansion Housing Material Cast Iron Included Bearing Timken Type E Tapered Roller Lubricant Material Lithium Complex Grease Maximum Speed 2 800 RPM Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Mount Hole Center-to-Center Length 6 3/64 in