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The new Haas ST-40 is the latest and largest addition to Haas Automation's line of new generation turning centres.

The rigid, accurate and thermally stable machine features castings optimized using finite element analysis (FEA) to produce the most rigid designs, while improving chip and coolant flow, and simplifying maintenance and service. The spindle head features a compact, symmetrical design for thermal stability and rigidity, and the 45° wedge design increases the tool-mounting envelope and improves chip flow.

The machine has a maximum cutting capacity of 648 mm x 1118 mm (25.5 in. x 44 in.), with maximum swings of 1016 mm (40 in.) over the front apron and 1118 mm (25.5 in.) over the cross slide. The spindle bore is 117.34 mm (4.62 in.), with a bar capacity of 101.6 mm (4 in.). The machine's 40-hp vector dual-drive spindle turns to 2400 rpm, and provides 427 m-kg (1400 ft-lb) of torque. For heavy cutting operations, an extra-performance spindle option is available that provides 55 hp and 640 m-kg (2100 ft-lb) of torque. Both spindles feature on-the-fly wye-delta switching that yields a wide constant-horsepower band for constant surface feed cuts.

The ST-40 features an A2-8 spindle nose and comes equipped with a 15 in. hydraulic three-jaw chuck. A 12-station bolt-on style tool turret is standard, with options for a VDI turret or hybrid BOT/VDI turret. Other standard equipment includes rigid tapping, a 15 in. colour LCD monitor, and built-in USB connectivity. Available options include a belt-type chip conveyor, a servo-driven tailstock, automatic tool probe, live tooling with C axis, an automatic parts catcher and high pressure coolant systems.

A long-bed version, the ST-40L, is also available. It offers a maximum turning length of 2 m (80 in.), nearly double that of the standard ST-40, for turning and boring long shafts and tubing.

Haas Automation

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