Pillow Block Bearing Base Height 1.75 in Base Width 2.75 in Bearing Insert Material Alloy Steel Bearing Insert Type Spherical Roller Bore Diameter 2 1/2 in Center Height 2.75 in Expansion Type Fixed Housing Material Cast Iron Included Bearing Non-Expansion M2000 Spherical Roller Lubricant Material Lithium Grease Maximum Speed 1 800 RPM Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Mount Hole Center-to-Center Length 7 1/8 in Mount Type Bolt-Through