Pillow Block Bearing Base Height 1.19 in Base Width 2.19 in Bearing Insert Material Alloy Steel Bearing Insert Type Spherical Roller Bore Diameter 1 1/2 in Center Height 1.875 in Expansion Type Expansion Housing Material Cast Iron Included Bearing Expansion M2000 Spherical Roller Lubricant Material Lithium Grease Maximum Speed 2 800 RPM Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Mount Hole Center-to-Center Length 5 in Mount Type Bolt-Through