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modern equipment review BTA Drilling MAchine for Deep-hole ApplicATions Available from Absolute Machine Tools, Zagar's Precihole BTA deep-hole drilling machines are offered in four models with spindle powers of 22, 37, 71 or 115 kW. The machines are equipped with either FANUC or Siemens CNCs. Models that hold the part stationary and feed the cutting tool are also available for applications where a high degree of concentricity is not required. The drilling machines are designed for major parts production in industries such as defense, oil and gas, hydraulics, automotive, general and heavy engineering, power generation, and nuclear energy, among others. BTA drilling, or single tube system (STS) drilling, provides holemaking in the range of 1.00" to 12.00" ID for solid drilling and 16.00" for counter-boring with lengths ranging to 40 ft., the company says. The process drills holes into the centers of cylindrical par ts, achieving high concentricity by rotating the cutting tool and feeding it into a counter-rotating tool. The tool is designed with carbide inserts and guide pads mounted to a toolholder drill tube. Coolant is introduced at a high pressure around the drill tube. The design is said to enable chip evacuation through the center of the drill and precise cutting efficiency. cnc Turning cenTer feATures live Tooling cApABiliTies piece. The live-tooling turret is driven by a 10-hp spindle motor and offers 12 stations available for live tooling. Movement of the base and quill are The Goodway GS-4000LM series of heavy-duty turning centers from Yama Seiki accommodates workpieces ranging to 24" in diameter. Four bed sizes are available, offering maximum turning lengths ranging from 29" to 118". Live-toolingturret, Y-axis and subspindle models are offered. The turning center is equipped with a chip conveyor, programmable base tailstock and turning toolholders. Live-tooling and C-axis control capabilities enable multitasking operations such as turning, milling, drilling and tapping on a work214 MMS September 2013 mmsonline.com Absolute Machine Tools Inc., call 800-852-7825 or visit absolutemachine.com.