For concentric grip on the shaft and less vibration at higher speeds, specify Dodge D-LOK normal or medium duty mounted ball bearings. These unique, concentric collar bearings are engineered with attributes that assure you superior holding power with improved concentricity. Even at high speeds, the D-LOK bearing grips the shaft tighter and more uniformly for less vibration. Dodge Take-Up Ball Bearing, Non-Expansion Normal Duty Narrow Slot, Series: 207 Series, 1-7/16 in Bore Dia, 4-1/2 in Length, 4.13 in Height, 5759 lb Dynamic/3461 lb Static, For Use With: NS308 Take-Up Frames, Steel Bearing, Powder Coated Precision hardened and honed inner and outer ringsNew rugged housing designD-LOK locking mechanismDualGuard positive contact seal including rubberized flingersStronger, flexible ball retainerSimplified anti-rotation deviceElectrostatically applied epoxy paint