Home / Knowledge / Haas ST-20 Previous Generation
Haas ST-20 Previous Generation
Haas documents a previous ST-20 generation alongside the redesigned current machine. The predecessor has 9.3-inch X travel, 21-inch Z travel, 2-inch bar capacity, 31.75-inch maximum part swing, and a 125 x 78 x 77 inch footprint without conveyor. These values must not be merged with the redesigned ST-20 record.
- Builder: Haas Automation.
- Series: ST Series.
- Lifecycle status: discontinued-generation.
- Successor: Redesigned Haas ST-20.
- Official Haas comparison data identifies this as the previous model; use serial number and build date to establish the exact revision and control generation.
Company overview
Haas documents a previous ST-20 generation alongside the redesigned current machine. The predecessor has 9.3-inch X travel, 21-inch Z travel, 2-inch bar capacity, 31.75-inch maximum part swing, and a 125 x 78 x 77 inch footprint without conveyor. These values must not be merged with the redesigned ST-20 record.
Industries and applications
- Maximum documented part swing: 31.75 in / 806 mm.
- Maximum documented cutting diameter with BOT turret: 15 in / 381 mm; maximum cutting length varies with workholding and is documented as 21 in / 533 mm.
Technical and quote details
- X travel: 9.3 in / 236 mm.
- Z travel: 21.0 in / 533 mm.
- Spindle interface: A2-6 spindle nose.
- Spindle speed: 4,000 rpm.
- Spindle power: 20 hp / 14.9 kW.
- Spindle drive: belt drive.
- Spindle barCapacity: 2.0 in / 51 mm.
- Tool capacity: BOT turret configuration documented; verify station count and turret build from the serial-specific machine record.
- Control: Haas CNC control.
- Control: Control hardware and software generation depend on build year.
- Control: Verify options and software against serial-specific Haas service documentation.
Selection notes
Variables to validate
- Haas labels the comparison column previous model but does not identify every production revision or serial break on the public page.
- Control generation, turret station count, options, service parts, and retrofit compatibility require serial-specific documentation.
- The previous generation and redesigned ST-20 share a model name but differ materially in travels, swing, bar capacity, cutting envelope, and footprint.