4 Bolt Flange Bearing Bearing Insert Material Alloy Steel Bearing Insert Type Radial Ball Bore Diameter 55 mm Bore Type Cylindrical Closure Double Sealed Housing Material Cast Iron Housing Type Square Included Bearing UC211-55MM Lubricant Material NLGI #2 Equivalent Maximum Temperature 120 Degrees C Minimum Temperature -40 Degrees C Mount Hole Center-to-Center Height 130.1 mm Number of Mount Holes 4 Overall Height 161.9 mm Overall Length 161.9 mm Overall Width 58.7 mm