4 Bolt Flange Bearing, Bearing Insert Material Alloy Steel, Bearing Insert Type Radial Ball, Bore Diameter 45 mm, Bore Type Cylindrical, Closure Double Sealed, Housing Material Cast Iron, Housing Type Square, Included Bearing UC209-45MM, Lubricant Material NLGI #2 Equivalent, Maximum Temperature 120 Degrees C, Minimum Temperature -40 Degrees C, Mount Hole Center-to-Center Height 105.1 mm, Number of Mount Holes 4, Overall Height 137.3 mm, Overall Length 137.3 mm, Overall Width 52.3 mm