Attributes . 4 Bolt Pillow Block; 10-1/2" Bore; 9-7/8" Base to Center Height; Tapered Adapter Sleeve Mount; Spherical Roller Bearing; 26-1/4" Minimum Bolt Spacing; 29-1/2" Bolt Spacing Maximum; Relubricatable; Cast Iron; Triple Ring Labyrinth; Non-expansion . Names