COLCHESTER HARRISON T-6M CNC LATHES

Technical Description

This CNC lathe features a FANUC Series 21i-TB control system, designed for precision turning operations on bar stock materials. The machine accommodates an 8-inch chuck, providing substantial clamping force for workpiece retention during high-precision machining cycles. The 2-inch bar capacity allows for efficient stock material feeding through the spindle, suitable for production runs requiring consistent part geometry. With a maximum spindle speed of 4 RPM, this lathe operates in the low-speed, high-torque range, ideal for heavy-duty roughing operations and large-diameter workpiece machining where control and power take precedence over rapid spindle rotation. The 17-inch swing dimension indicates the maximum workpiece diameter that can be machined relative to the lathe bed centerline, defining the envelope of feasible part geometries. The FANUC 21i-TB CNC control provides advanced NC functions and multi-axis coordination capability, enabling complex tool path programming and simultaneous axis motion control. The system supports standard G-code programming with canned cycles for drilling, threading, and repetitive operations, along with configurable I/O parameters for interfacing peripheral equipment and data transfer protocols. The control accommodates both single-path and dual-path machining configurations, allowing for flexible production strategies. Constant surface speed control functionality optimizes cutting tool life through dynamic spindle speed adjustment relative to workpiece diameter during contouring operations. This combination of specifications positions the machine for heavy material removal applications requiring robust spindle torque and precise CNC automation in manufacturing environments.