4 Bolt Flange Bearing Back Side to Center Width 0.827 in Bearing Insert Material Alloy Steel Bearing Insert Type Radial Ball Bore Diameter 1 3/8 in Bore Type Cylindrical Closure Double Sealed Housing Material Cast Iron Housing Type Square Included Bearing A-UEL207-106D1 Lubricant Material NLGI #3 Equivalent Maximum Speed 4 200 RPM Maximum Temperature 250 Degrees F Minimum Temperature -40 Degrees F Mount Hole Center-to-Center Height 3.625 in Number of Mount Holes 4