4 Bolt Flange Bearing Back Side to Center Width 0.937 in Bearing Insert Material Alloy Steel Bearing Insert Type Radial Ball Bore Diameter 1 3/4 in Bore Type Cylindrical Closure Double Sealed Housing Material Cast Iron Housing Type Square Included Bearing A-UC209-112D1/LP09M Lubricant Material NLGI #3 Equivalent Maximum Speed 3 450 RPM Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Mount Hole Center-to-Center Height 4.125 in Number of Mount Holes 4