Big-bore Turning Centers

Haas Automation has released six models of its big-bore turning center. The ST-25 has a maximum capacity of 15 by 21 in., with a 31.75-in. swing over the front apron. The machine’s A2-6 spindle has a 3-in. bar capacity and is equipped with a 10-in. hydraulic chuck. The spindle, powered by a 30-HP vector drive system, turns to 3,400 RPM. A 12-station bolt-on-style turret is standard.

The ST-25Y has the same footprint and spindle specifications as the ST- 25, with a maximum capacity of 12 by 21 in. It is equipped with a Y axis that has ±2 in. of travel and includes high-torque live tooling and a servodriven C axis. A 12-station hybrid VDI/BOT turret is standard.

The ST-35 has a maximum capacity of 21 by 26 in., with a 31.75-in. swing over the front apron. The machine’s A2-8 spindle has a 4-in. bar capacity and is equipped with a 12-in. hydraulic chuck. The spindle, powered by a 40-HP vector drive system through a 2-speed gearbox, turns to 2,400 RPM. A 12-station bolt-on-style turret is standard.

The ST-35Y has the same footprint and spindle specifications as the ST- 35, with a maximum capacity of 18 by 23 in. The machine is equipped with a Y axis that provides ±2 in. of travel and includes high-torque live tooling and a servo-driven C axis. A 12-station hybrid VDI/BOT turret is standard.

The ST-45 has a maximum capacity of 25.5 by 44 in., with a 34.5-in. maximum swing over the front apron. The machine’s A2-11 spindle has a 7-in. bore and accepts an optional 18-in. hydraulic chuck. The spindle is powered by a 40-HP vector drive system through a 2-speed gearbox and turns to 1,400 RPM. A 12-station bolt-onstyle turret is standard.

The ST-45L is a long-bed version of the ST-45, with a maximum capacity of 25.5 by 80 in. for nearly double the turning length. It comes standard with a servo-driven tailstock.

Standard equipment on all of these machines includes rigid tapping, a 15- in. LCD color monitor, and USB connectivity. Available options include a belt-type chip conveyor, hydraulic tailstock, automatic tool probe, automatic parts catcher, and high-pressure coolant systems.