Dodge Flange Mount Roller Bearing Unit, Double-Interlock Expansion, Series: 307 Series, 3-7/16 in Bore Dia, 8.13 in Bolt Center-to-Center Length, 11-1/2 in Bolt Circle, Four-Bolt Base Flange Mounting Type, 11.38 in Overall Length/Diameter, 5 in Overall Depth, 10-1/4 in Overall Height, 65 deg Setscrew Locking Device, Steel Bearing, Rubber Seal, 17750 lb Dynamic/108600 lb Static, 1640 rpm Maximum, -100 to 200 deg F, Uncoated Factory assembled, adjusted and pre-lubricatedCase hardened rollers and racesEasy installation and maintenance65 deg setscrew angle Springlok collar/ flingers - more holding power than 90 to 120 degXTS triple lip seal standardOffers tapered roller bearing durability in a variety of mounting stylesSelf-aligning