Gray VBM 300/120" Vertical Boring Machine Dual Head VBM with 120" Table, 125 HP Table Drive Machine Specifications (per GRAY manual) Table Diameter 120" Maximum swing 132" Maximum Machine Height 24'-8" Rail 40" Face Heads: Right Hand, Ram Type, Nonswivel, with fixed 4 position qualified tool block for 2" tools. Left Hand, Ram Type, Nonswivel, with fixed 4 position qualified tool block for 2" tools. Maximum Height under Rail Head Saddle 102" Minimum Height under Rail Head Saddle 24" Dimensions - Both Right and Left Hand Heads Maximum Height under Tool Block 90" Vertical Travel: Ram Slide below Saddle 72" Horizontal Travel: Ram Head to Table Center 74" Ram Head past Table Center 1" Smallest Hole Tool Block will Enter 16-1/2" Ram size 12" X 12" Feed Range 0.01 to 120 IPM Table 120" Diameter Load Capacity 172,000 @ Max RPM With set of (4) 14" Face Plate Jaws Table Drive Two Range Table Speed - Infinitely Variable: High Range - 16.2 to 50 RPM Constant HP Low Range - 6.5 to 20 RPM Constant HP Overall - 1 to 50 RPM Table Drive - Reversing SCR Type 125 HP @ 650 RPM Motor Base Speed General notes: Serial number: 9837 Original installation date: September 1973 NC Control is a GE 7500 NC of early 1970 era. The magnetic control and Table Drive is of the same era. The Heads and Rams have Hydraulic Servo Motor Drives, these would typically require a retrofit to Digital AC Servo Motors, new Table drive and motor as well. In short, totally new electric controls needed. Left head is not operational, believed to be mechanical problem.