Pillow Block Bearing Base Height 0.88 in Base Width 1.88 in Bearing Insert Material Alloy Steel Bearing Insert Type Tapered Roller Bore Diameter 1 in Bore Type Cylindrical Center Height 1.5 in Expansion Type Expansion Housing Material Cast Iron Included Bearing Timken Type E Tapered Roller Lubricant Material Lithium Complex Grease Maximum Speed 3 800 RPM Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Mount Hole Center-to-Center Length 4 35/64 in