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 15/16 in Bore Type Cylindrical Closure Double Sealed Housing Material Cast Iron Housing Type Square Included Bearing UC210-115D1 Lubricant Material NLGI #3 Equivalent Maximum Speed 3 100 RPM Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Mount Hole Center-to-Center Height 4.375 in Number of Mount Holes 4