4 Bolt Flange Bearing, Back Side to Center Width 1.343 in, Bearing Insert Material Alloy Steel, Bearing Insert Type Radial Ball, Bore Diameter 2 15/16 in, Bore Type Cylindrical, Closure Double Sealed, Housing Material Cast Iron, Housing Type Square, Included Bearing UC215-47, Lubricant Material NLGI #2 Equivalent, Maximum Speed 2,450 RPM, Maximum Temperature 220 Degrees F, Minimum Temperature -20 Degrees F, Mount Hole Center-to-Center Height 6.25 in, Number of Mount Holes 4