A setscrew 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 setscrew 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 Pillow Block Ball Bearing Unit, Normal Duty, Series: 211 Series, 2-3/16 in Bore Dia, 4 in Bolt Center-to-Center Length, 2-1/4 in Base to Bore Centerline, 5-1/2 in Overall Length, 2.22 in Overall Width, 4.63 in Overall Height, Tapped Base Mount, Round Bore Type, 2 in Base Width, 65 deg Setscrew Locking Device, Single Lip Seal, Non-Expansion Expansion Type, 9755 lb Dynamic/6588 lb Static, 4000 rpm Maximum, Cast Iron, Powder Coated 65 deg setscrew locking systemPrecision hardened and honed inner and outer ringsGrade 10 ballsWide inner ring design