Pillow Block Bearing Base Height 1.88 in Base Width 4 in Bearing Insert Material Alloy Steel Bearing Insert Type Tapered Roller Bore Diameter 2 15/16 in Bore Type Cylindrical Center Height 3.125 in Expansion Type Expansion Housing Material Cast Iron Included Bearing Timken Type E Tapered Roller Lubricant Material Lithium Complex Grease Maximum Speed 1 965 RPM Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Mount Hole Center-to-Center Length 9.5 in