Pillow Block Bearing Base Height 1.63 in Base Width 2.5 in Bearing Insert Material Alloy Steel Bearing Insert Type Spherical Roller Bore Diameter 2 3/16 in Center Height 2.5 in Expansion Type Expansion Housing Material Cast Iron Included Bearing Expansion M2000 Spherical Roller Lubricant Material Lithium Grease Maximum Speed 2 150 RPM Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Mount Hole Center-to-Center Length 6.75 in Mount Type Bolt-Through