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 features 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® D-LOK™ Take-Up D-Lock Ball Bearing, Normal Duty Wide Slot, Series: 205, 1 in Bore, Stainless Steel Bearing, Uncoated