High-speed Turning Center

Haas says its ST-20SS turning center was designed to be extremely rigid and thermally stable. All castings were 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, symmetric design for thermal stability and rigidity, and the 45-degree wedge design increases the tool-mounting envelope and improves chip flow, according to the builder.

The machine is equipped with a 24-station hybrid BOT/VDI turret that indexes tools in 0.5 second. It also provides a maximum cutting capacity of 10 by 20.5 in., with maximum swings of 31.75 in. over the front apron and 20.75 in. over the cross slide.

The A2-6 spindle nose has a 3-in. spindle bore and a bar capacity of 2 in. It is also equipped with an 8.3-in., hydraulic three-jaw chuck. The machine’s 30-HP vector dual-drive spindle spins to 5,000 RPM and provides 115 ft.-lbs. of torque at 1,380 RPM. On-the-fly, wye-delta switching yields a wide constant-horsepower band for constant surface feed cuts. Rapids are 1,200 IPM on the Z axis and 945 IPM on the X axis.

Standard equipment includes a 15-in., color LCD monitor and a USB port. Other available equipment includes a belt-type chip conveyor, hydraulic tailstock, automatic tool probe, live tooling with C axis, an automatic parts catcher, and high-pressure coolant systems.

For more information, visit www.haascnc.com.