Toshiba Machine BTD-200

The Toshiba Machine BTD-200 is a large-scale floor-type CNC horizontal boring and milling machine with a 200 mm diameter spindle, designed for the most demanding heavy machining applications in the power generation, shipbuilding, and heavy industrial sectors. Produced by Toshiba Machine Co., Ltd. (now Shibaura Machine Co., Ltd.) in Japan, the BTD-200 represents the upper end of the company's horizontal boring mill range, providing extreme spindle torque, large-format axis travels, and the precision demanded by critical heavy-part machining.

With a 200 mm spindle diameter — among the largest in the floor-type boring mill category — the BTD-200 delivers over 100 kW of spindle power and spindle torque exceeding 60,000 Nm in peak gearbox conditions, enabling roughing cuts of extraordinary depth and width in cast iron, carbon steel, stainless steel, and nickel alloys. The floor plate work zone accommodates workpieces of essentially unlimited weight, bolted or fixtured directly to precision T-slot floor plates that extend tens of meters in the X-axis direction.

The BTD-200 is equipped with a Fanuc 31i-B5 or Siemens 840D sl CNC, supporting full 5-axis simultaneous interpolation including facing head U-axis operations. The optional CNC facing head (U-axis) is a major feature of the BTD-200 in power generation applications — it enables in-situ turning, facing, and grooving of flanges, journal diameters, and large bore features on parts too heavy to transfer to a lathe. Automatic tool changers with 60 to 120 positions handle the wide variety of large boring bars, face mills, drills, and taps required in complex large-part programs.

Toshiba Machine's BTD-200 installations are found in the world's leading turbine manufacturers, nuclear component fabricators, and large naval shipyards, where the machine's combination of extreme spindle power, precision, and massive work zone size is unmatched by smaller platforms. These are long-lived, high-capital assets that are typically configured and engineered to order for each customer's production requirements.