A set screw shaft attachment method is the most common means of securing a mounted ball bearing to a shaft and also the easiest to install. The Dodge mounted ball bearing offering is engineered with a 65 deg set screw angle. This ensures the maximum grip onto the shaft, especially when using premium cup point set screws with the high quality manufacturing of the Dodge insert. Dodge Ball Bearing Unit, Air Handling Normal Duty Non-Expansion, Series: 206 Series, 1-1/8 in Bore Dia, 3-1/4 in Bolt Center-to-Center Length, Four-Bolt Base Flange Mounting Type, 4-1/4 in Overall Length/Diameter, 1.56 in Overall Depth, 4-1/4 in Overall Height, 65 deg Setscrew Locking Device, Steel Bearing, Nitrile Rubber Seal, 4368 lb Dynamic/2538 lb Static, 6500 rpm Maximum, Powder Coated DualGuard seal with rubberized flinger is standardPrecision hardened and honed-series 200 mounted ball bearings in globally interchangeable, ISO dimensionsUnique 65 deg setscrew angle and premium cup point set screws optimize shaft holding power without excessive inner ring distortionStronger and flexible ball cageWide inner ring design