Attributes . 4 Bolt Pillow Block; 2-15/16" Bore; 3-3/4" Base to Center Height; Tapered Adapter Sleeve Mount; Spherical Roller Bearing; 9.882" Minimum Bolt Spacing; 10-63/64" Maximum Bolt Spacing; Relubricatable; Cast Iron; Triple Ring Labyrinth; Non-Expansion . Names