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, Extreme Medium Duty, Series: 211 Series, 1-15/16 in Bore Dia, 6.38 to 7.44 in Bolt Center-to-Center Length, 2-1/2 in Base to Bore Centerline, 8.88 in Overall Length, 2.22 in Overall Width, 4.96 in Overall Height, Two-Bolt Base Mount, Round Bore Type, 2.3 in Base Width, 65 deg Setscrew Locking Device, Triple Lip Seal, Non-Expansion Expansion Type, 9755 lb Dynamic/6588 lb Static, 3250 rpm Maximum, Cast Iron, Powder Coated 65 deg setscrew locking systemPrecision hardened and honed inner and outer ringsGrade 10 ballsWide inner ring design