b'The Need for Extended-Reach Boring BarsVibration-damping technologies are for not just longer-length toolholders but boring bars.Theres a ton of demand in the oil and gas industry to get much deeper into a bore for ID turning, said Gregg Bishop of Ultra-Dex USA. Theyre always trying to push that envelope to reach size and finish limits we never thought were possible. Imagine a 40" bore with a standard 4" bar. You cant do that with a traditional carbide shank boring bar.He said oil and gas applications use threads with a high insert engagement, which creates a lot of deflection when Ultra-Dex USA cutting, and therefore vibration occurs even at short bar lengths. Ultra-Dex USA offers chatter-free In response to demand, Ultra-Dex developed aboring bars with an internal chatter-free line of boring bars with up to adamping technology based on a 14-1 ratio. These long-overhang ratioshigh-density alloy.are made possible by an internal damping technology based on asteel boring bar with the same hangout ratios, Bishop said. high-density alloy that providesIts a productivity booster, so the (return on investment) optimal dynamic stability. on the added cost is found where the customer takes into They can run at higher speedsconsideration the increased throughput. and feeds versus a plain carbide orHolly B. MartinG ENERALA PPLICATIONT OOLS H IGHP ERFORMANCET OOLSwww.gi.comphone: 800-348-2885ctemag.com/cteguide.com57Toolholders.indd 57 6/13/19 4:43 PM'