Pillow Block Bearing Base Height 3.25 in Base Width 6.25 in Bearing Insert Material Alloy Steel Bearing Insert Type Tapered Roller Bore Diameter 5 7/16 in Bore Type Cylindrical Center Height 6 11/16 in Expansion Type Expansion Housing Material Cast Iron Included Bearing Timken Type E Tapered Roller Lubricant Material Lithium Complex Grease Maximum Speed 915 RPM Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Mount Hole Center-to-Center Length 18.25 in