Dodge Pillow Block Ball Bearing Unit, Normal Duty Non-Expansion Single Lip, Series: 208, 40 mm Bore Dia, 131.6 to 149.4 mm Bolt Center-to-Center Length, 54 mm Base to Bore Centerline, 184.2 mm Overall Length, 1-15/16 in Overall Width, 106.4 mm Overall Height, Two-Bolt Base Mount, Round Bore Type, 49 mm Base Width, Setscrew Locking Device, Single Lip Seal, Non-Expansion Expansion Type, 32627 lb Dynamic/19906 lb Static, 225 to 400 deg F, Steel, Powder Coated Normal duty wide inner ringStronger and more flexible cage