PROKING BN-50 CNC LATHE

Technical Description

The 50-inch swing CNC lathe represents a mid-range heavy-duty turning machine designed for precision metalworking applications, particularly suited for oil country tubular goods and large valve production. With a 50-inch swing capacity over the bed, this machine accommodates substantial workpieces while maintaining rigorous dimensional accuracy through computer numerical control. Powered by a 30 horsepower main spindle motor, the lathe delivers sufficient cutting force for demanding machining operations on ferrous and non-ferrous materials. The spindle features an infinitely variable speed control commanded through S-code programming, with automatic gear shifting via pneumatic actuators to optimize cutting conditions across diverse applications. The CNC control system utilizes either Fanuc 0i-TF or Fanuc 31i-B controllers, enabling sophisticated part programming and adaptive machining strategies. Dual servo axes (X and Z) each rated at 7 kilowatts provide precise positioning with cutting feed rates ranging from 0.001 to 250 millimeters per revolution on the X-axis and 0.001 to 400 millimeters per revolution on the Z-axis. Construction features a one-piece cast bed with alloy steel spindle supported by opposed taper roller bearings, ensuring dimensional stability during extended production runs. The machine accommodates center distances up to 12,000 millimeters with optional swing capacities over the cross-slide, providing versatility for various workpiece geometries. Integral coolant circulation and automatic spindle speed adjustments enhance operational efficiency and tool life for continuous production environments.