Attributes . 4 Bolt Pillow Block; 13-7/16" Bore; 14-1/2" Base to Center Height; Tapered Adapter Sleeve Mount; Spherical Roller Bearing; 39-1/4" Minimum Bolt Spacing; 40-3/4" Bolt Spacing Maximum; Relubricatable; Cast Iron; Triple Ring Labyrinth; Non-expansion . Names