Pillow Block Bearing Base Height 0.75 in Bearing Insert Material UHMW Polyethylene Bearing Insert Type Sleeve Bore Diameter 1 in Center Height 1 7/16 in Housing Material UHMW Polyethylene Maximum Speed 3 500 RPM Maximum Temperature 180 Degrees F Minimum Temperature -60 Degrees F Mount Hole Center-to-Center Length 4 in Mount Type Bolt-Through Number of Mount Holes 2 Overall Height 2.75 in Overall Length 5.5 in Overall Width 1.5 in Self Lubricating Bearing Yes