Dodge Ball Bearing Unit, High Temperature Normal Duty Non-Expansion, Series: 208 Series, 1-1/2 in Bore Dia, 4 in Bolt Center-to-Center Length, Four-Bolt Base Flange Mounting Type, 5.13 in Overall Length/Diameter, 2.05 in Overall Depth, 5.13 in Overall Height, D-LOK Concentric Clamp Collar Locking Device, Steel Bearing, Nitrile Rubber Seal, 7332 lb Dynamic/4475 lb Static, 5000 rpm Maximum, 400 deg F, Powder Coated Precision hardened and honed inner and outer ringsNew rugged housing designWide inner ring designDualGuard positive contact seal including rubberized flingersStronger and flexible ball retainerSimplified anti-rotation devicePremium triple lip QuadGuard seal