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Mighty Viper’s PBM-135 CNC horizontal boring and milling machine with rotary table and oversized boxway design is said to provide stable, precision positioning accuracy and effective cutting capability for various applications. In addition, a wide base and column structure increases rigidity and damping capability, the company says.
The machine’s 5.11"-diameter spindle has a W axis that provides 28" of horizontal travel using two linear ways for accurate quill movement, while combined W- and Y-axis movement is engineered to automatically compensate for mechanical quill sagging, the company says. Its gear-driven spindle with four-step speed change provides up to 4,680 foot-pounds of torque. The 50-hp, 2,500-rpm spindle motor can be equipped with a variety of spindle heads, including a universal head, a 90-degree head, a 90-degree extension head and a quill support.
The rotary table offers positioning accuracy of ±10 arcseconds. The standard table can accommodate a load of 16,000 lbs, while an optional table offers a capacity of 26,400 lbs. A large-capacity cooling system is available for all spindle, cartridge, gearbox and hydraulic systems. ATC capacity ranges from 60 to 160 tools.
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