Chevalier's FBB-110L series T-type horizontal boring mill suits heavy-duty, high-precision applications with a 120" × 83" × 80" (XYZ) machining work zone. The rigid design of the machine body and column offers structural stability, and the fully supported base on the X and Y axes prevents overhang or vibration during cutting, the company says. The machine features a one-piece, Meehanite cast iron base with large, heavy-duty box ways on the X, Y and Z axes that are coated with an antifriction Turcite material for consistent, smooth movement.
The 35-hp, 50-taper, cartridge-type spindle features a large diameter and air purging. Running with a two-speed gearhead stock that generates as much as 1,500 Nm of torque, the spindle can also be extended (in the W axis) for deep-hole boring of tough materials.
The machine’s table offers full C-axis contouring with 0.001-degree minimum intervals. It also has a hydraulic break disk and a locking pin every 90-degrees for stability while cutting. An AC servo motor with a worm shaft and gear drives the rotary table, providing high torque for heavy workpieces. A built-in angular scale enables accuracy of ±15 arcseconds.