GRAY SERIES 300 HEAVY DUTY VERTICAL BORING MILL

The GRAY SERIES 300 is a heavy-duty vertical boring mill engineered for large-scale machining operations. Key specifications include a generous 144-inch table diameter and a maximum swing of 151 inches. It offers substantial working height, with a maximum height under the cross rail of 120 inches and a maximum under ram or tool block of 112 inches. The machine is equipped with dual vertical rams, each capable of a 96-inch stroke. Powering the system is a 75 HP table drive motor, facilitating table speeds infinitely variable from 0.8 to 50 RPM, and accommodating heavy workloads with a table capacity of 100 tons. Precision feeding is ensured by infinitely variable feeds ranging from 0.0005 to 2.0 inches per revolution. Operation and control are managed by a reliable CNC system, specifically the Giddings & Lewis 8000 CNC.