4 Bolt Flange Bearing Bearing Insert Material Alloy Steel Bearing Insert Type Radial Ball Bore Diameter 3/4 in Bore Type Cylindrical Closure Double Sealed Housing Material Zinc Die Cast Housing Type Square Lubricant Material NLGI #2 Equivalent Maximum Speed 4 500 RPM Maximum Temperature 200 Degrees F Minimum Temperature -30 Degrees F Mount Hole Center-to-Center Height 2.5 in Number of Mount Holes 4 Overall Height 3.375 in Overall Length 3.375 in Overall Width 1.125 in