4 Bolt Flange Bearing, Back Side to Center Width 1.14 in, Bearing Insert Material Alloy Steel, Bearing Insert Type Radial Ball, Bore Diameter 2 3/16 in, Bore Type Cylindrical, Closure Double Sealed, Housing Material Cast Iron, Housing Type Square, Included Bearing UCX11-35, Lubricant Material NLGI #2 Equivalent, Maximum Speed 3,000 RPM, Maximum Temperature 220 Degrees F, Minimum Temperature -20 Degrees F, Mount Hole Center-to-Center Height 5.625 in, Number of Mount Holes 4