Dodge Pillow Block Roller Bearing Unit, Imperial SN, Series: 315/520, 90 mm Bore Dia, 292.8 to 327 mm Bolt Center-to-Center Length, 112 mm Base to Bore Centerline, 379.8 mm Overall Length, 120 mm Overall Width, 218.3 mm Overall Height, Two-Bolt Base Mount, Round Bore Type, 110.2 mm Base Width, Adapter Mounted Locking Device, Trident Triple-Lip Seal, Expansion Expansion Type, -20 to 200 deg F, Cast Iron, Uncoated Patented ISN push/pull adapter mounting systemEliminates need for feeler gaugesEasy and intuitive removal method