Pillow Block Bearing Base Height 1.311 in Base Width 4.374 in Bearing Insert Material Alloy Steel Bearing Insert Type Radial Ball Bore Diameter 3 7/16 in Bore Type Cylindrical Center Height 3 63/64 in Closure Open Housing Material Cast Iron Lubricant Material NLGI #3 Equivalent Maximum Speed 1 300 RPM Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Mount Hole Center-to-Center Length 10 61/64 in Mount Type Bolt-Through Number of Mount Holes 2