4 Bolt Flange Bearing, Back Side to Center Width 0.906 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 UCX09-112D1, Lubricant Material NLGI #3 Equivalent, Maximum Temperature 250 Degrees F, Minimum Temperature -40 Degrees F, Mount Hole Center-to-Center Height 4 23/64 in, Number of Mount Holes 4, Overall Height 5 5/8 in