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 7/16 in, Bore Type Cylindrical, Closure Double Sealed, Housing Material Cast Iron, Housing Type Square, Included Bearing A-UC207-107D1/LP09M, 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