Attributes . 20MM Bore; 25MM Base to Center Height; 45MM Nominal Bolt Center Across Shaft; 4 Bolt Pillow Block; Aluminum Housing; Plain; 45MM Length Thru Bore; 4.7MM Mounting Hole Diam; Relubricatable; PAB2045PPAS; 2 Seals; Non-Adjustable; No Self Aligning . Names