4 Bolt Flange Bearing, Back Side to Center Width 1.37 in, Bearing Insert Material Alloy Steel, Bearing Insert Type Radial Ball, Bore Diameter 2 7/16 in, Bore Type Cylindrical, Closure Double Sealed, Housing Material Cast Iron, Housing Type Square, Included Bearing G1207KRRB, Lubricant Material NLGI #2 Equivalent, Maximum Speed 2,800 RPM, Maximum Temperature 200 Degrees F, Minimum Temperature -65 Degrees F, Mount Hole Center-to-Center Height 5 5/8 in, Number of Mount Holes 4