Pillow Block Bearing Base Height 2.25 in Base Width 2.81 in Bearing Insert Material Alloy Steel Bearing Insert Type Spherical Roller Bore Diameter 2 3/4 in Center Height 3.25 in Expansion Type Fixed Housing Material Cast Iron Included Bearing Non-Expansion M2000 Spherical Roller Lubricant Material Lithium Grease Maximum Speed 1 600 RPM Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Mount Hole Center-to-Center Length 8 1/8 in Mount Type Bolt-Through