4 Bolt Flange Bearing Back Side to Center Width 0.866 in Bearing Insert Material Alloy Steel Bearing Insert Type Radial Ball Bore Diameter 1 11/16 in Bore Type Cylindrical Closure Double Sealed Housing Material Cast Iron Housing Type Square Included Bearing UC209-111D1 Lubricant Material NLGI #3 Equivalent Maximum Speed 3 500 RPM Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Mount Hole Center-to-Center Height 4 9/64 in Number of Mount Holes 4