USED HAAS ST-40 – 2012
The HAAS ST-40 – 2012 is a heavy-duty CNC horizontal turning center designed for machining large-diameter and long workpieces. The ST-40 belongs to the large-capacity Haas ST Series and is built around a rigid machine platform intended for demanding turning applications in job shops and production environments.
A documented 2012 HAAS ST-40 Big Bore configuration is equipped with an 18-inch chuck, 7-inch spindle bore, 40 HP spindle motor, 1,400 RPM maximum spindle speed, A2-11 spindle nose, 17-inch X-axis travel, and 44-inch Z-axis travel. This particular configuration provides a 25.5-inch maximum turning diameter, 44-inch maximum turning length, and 34.5-inch maximum swing.
The large-bore configuration makes this machine particularly suitable for applications requiring substantial bar capacity and large spindle openings. A 7-inch bore allows larger-diameter material to pass through the spindle, making the machine useful for oilfield components, large shafts, pipe-related components, flanges, rings, and other heavy industrial parts.
The ST-40 uses a 2-speed gearbox to provide high torque at low spindle speeds while maintaining the flexibility required for general turning operations. The 40 HP spindle provides considerable cutting power for machining materials such as carbon steel, alloy steel, stainless steel, cast iron, and other industrial materials.
The machine can also be equipped with a hydraulic chuck, tailstock, chip conveyor, coolant system, tooling packages, and other production options. Exact equipment varies between individual 2012 machines.
HAAS ST-40 – 2012 – AXIS
| Specification | Details |
|---|---|
| Machine Type | CNC Horizontal Turning Center |
| Number of Axes | 2 Axis |
| X Axis | Yes |
| Z Axis | Yes |
| C Axis | Configuration Dependent |
| Y Axis | No |
| Live Tooling | No on standard ST-40 |
| Sub Spindle | No |
| Tailstock | Yes |
| Automatic Turret | Yes |
The standard ST-40 is primarily a two-axis CNC turning center. Additional capabilities depend on the specific configuration and options installed on the machine.
HAAS ST-40 – 2012 – AXIS TRAVELS / WORK ENVELOPE
| Specification | Details |
|---|---|
| X Axis Travel | 17″ |
| Z Axis Travel | 44″ |
| Maximum Turning Diameter | 25.5″ |
| Maximum Turning Length | 44″ |
| Maximum Swing | 34.5″ |
| Chuck Diameter | 18″ |
| Spindle Bore | 7″ Big Bore configuration |
The documented 2012 Big Bore ST-40 provides 17 inches of X-axis travel and 44 inches of Z-axis travel, making it suitable for large and relatively long workpieces.
HAAS ST-40 – 2012 – CAPACITY / CHUCK
| Specification | Details |
|---|---|
| Chuck Size | 18″ |
| Chuck Type | Hydraulic / Configuration Dependent |
| Maximum Turning Diameter | 25.5″ |
| Maximum Turning Length | 44″ |
| Maximum Swing | 34.5″ |
| Spindle Bore | 7″ Big Bore |
| Bar Capacity | Approximately 7″ Big Bore configuration |
| Workholding | Hydraulic Chuck / Configuration Dependent |
| Steady Rest | Configuration Dependent |
The 7-inch Big Bore configuration is particularly valuable when machining large-diameter bar stock or tubular components that need to pass through the spindle.
HAAS ST-40 – 2012 – SPINDLE
| Specification | Details |
|---|---|
| Spindle Motor | 40 HP |
| Maximum Spindle Speed | 1,400 RPM |
| Spindle Nose | A2-11 |
| Spindle Bore | 7″ |
| Drive System | 2-Speed Gearbox |
| Spindle Type | CNC Turning Spindle |
| Torque | Configuration Dependent |
The 40 HP spindle and two-speed gearbox provide the high torque required for heavy-duty turning. The 1,400 RPM maximum speed is well suited to the large workholding and large-bore configuration of the documented machine.
HAAS ST-40 – 2012 – TOOL TURRET
| Specification | Details |
|---|---|
| Turret Type | Automatic Tool Turret |
| Tool Capacity | Configuration Dependent |
| Standard Configuration | Bolt-On Tooling |
| Tooling | BOT / Configuration Dependent |
| OD Tooling | Yes |
| ID Tooling | Yes |
| Boring Bars | Yes |
| Tool Change | Automatic |
The ST-40’s turret allows multiple turning tools to remain installed, reducing setup time when machining parts requiring several roughing, finishing, boring, grooving, and threading operations.
HAAS ST-40 – 2012 – CONTROL SYSTEM
| Specification | Details |
|---|---|
| CNC Control | Haas CNC Control |
| Programming | G-Code |
| Tool Offsets | Yes |
| Work Offsets | Yes |
| Rigid Tapping | Configuration Dependent |
| USB | Configuration Dependent |
| Ethernet | Configuration Dependent |
| Remote Jog Handle | Configuration Dependent |
| Conversational Programming | Haas Control Functions |
The Haas CNC control provides integrated control of the turning axes, spindle, turret, offsets, coolant, and other machine functions.
HAAS ST-40 – 2012 – FEEDRATES
| Specification | Details |
|---|---|
| X Rapid Traverse | 710 IPM |
| Z Rapid Traverse | 710 IPM |
| Cutting Feedrate | Material / Tool Dependent |
| Feed Per Revolution | Programmable |
| Maximum X Thrust | Configuration Dependent |
| Maximum Z Thrust | Configuration Dependent |
The documented 2012 ST-40 provides rapid axis movement suitable for production turning, while the large machine structure provides the rigidity required for heavier cuts.
HAAS ST-40 – 2012 – TAILSTOCK
| Specification | Details |
|---|---|
| Tailstock | Yes |
| Tailstock Taper | MT5 |
| Tailstock Travel | Configuration Dependent |
| Quill Diameter | Configuration Dependent |
| Tailstock Type | Hydraulic / Programmable Configuration Dependent |
| Application | Long Workpiece Support |
The tailstock is useful when machining long shafts and other components where additional support is required to minimize workpiece deflection.
HAAS ST-40 – 2012 – COOLANT / CHIP MANAGEMENT
| Specification | Details |
|---|---|
| Coolant System | Yes |
| Flood Coolant | Yes |
| Coolant Tank | Configuration Dependent |
| Chip Conveyor | Available |
| Coolant Pump | Configuration Dependent |
| High-Pressure Coolant | Configuration Dependent |
| Chip Management | Conveyor / Collection System |
| Mist Collector | Configuration Dependent |
A chip conveyor can be particularly useful on the ST-40 when machining large steel components or during continuous production where substantial quantities of chips are generated.
HAAS ST-40 – 2012 – POWER REQUIREMENTS
| Specification | Details |
|---|---|
| Electrical Supply | Three Phase |
| Main Spindle Power | 40 HP |
| Voltage | Configuration Dependent |
| Frequency | 50 / 60 Hz Configuration Dependent |
| Full Load Amperage | Configuration Dependent |
| Air Requirement | Configuration Dependent |
Electrical requirements should be verified from the machine’s electrical nameplate before installation, particularly for a used machine that may have been configured for a different voltage.
HAAS ST-40 – 2012 – DIMENSIONS
| Specification | Details |
|---|---|
| Overall Length | Configuration Dependent |
| Overall Width | Configuration Dependent |
| Overall Height | Configuration Dependent |
| Machine Weight | Configuration Dependent |
| Shipping Dimensions | Configuration Dependent |
| Installation Footprint | Configuration Dependent |
The exact dimensions and weight can vary depending on the Big Bore configuration, chip conveyor, hydraulic equipment, enclosure, tooling, and other accessories.
HAAS ST-40 – 2012 – GENERAL INFORMATION
| Specification | Details |
|---|---|
| Manufacturer | Haas |
| Model | ST-40 |
| Year | 2012 |
| Machine Type | CNC Horizontal Turning Center |
| Configuration | Big Bore |
| X Axis Travel | 17″ |
| Z Axis Travel | 44″ |
| Maximum Turning Diameter | 25.5″ |
| Maximum Turning Length | 44″ |
| Maximum Swing | 34.5″ |
| Chuck Size | 18″ |
| Spindle Bore | 7″ |
| Spindle Nose | A2-11 |
| Spindle Motor | 40 HP |
| Maximum Spindle Speed | 1,400 RPM |
| Gearbox | 2-Speed |
| Tailstock | Yes |
| CNC Control | Haas |
| Chip Conveyor | Configuration Dependent |
| Coolant | Yes |
| Y Axis | No |
| Sub Spindle | No |
| Live Tooling | No on standard configuration |
The specifications above reflect a documented 2012 ST-40 Big Bore configuration; individual machines may differ based on installed options.
INDUSTRIES THAT USE HAAS ST-40
The HAAS ST-40 is suitable for a variety of industries requiring large-capacity CNC turning, including:
- Oil and gas
- Automotive
- Aerospace
- Heavy equipment
- Industrial machinery
- Energy
- Pumps and valves
- Hydraulic equipment
- Mining equipment
- General manufacturing
- Job shops
- Fabrication and machining
- Construction equipment
TYPICAL PARTS HAAS ST-40 CAN PRODUCE
The large work envelope and Big Bore configuration make the ST-40 suitable for producing:
- Large shafts
- Flanges
- Rings
- Bushings
- Hubs
- Pipe components
- Oilfield components
- Valve bodies
- Pump components
- Couplings
- Adapters
- Rollers
- Spacers
- Large threaded components
- Industrial machine components
WHY CHOOSE HAAS ST-40 – 2012
The HAAS ST-40 – 2012 is a strong choice for manufacturers that need a large-capacity CNC lathe capable of handling substantial workpieces and large-diameter material.
The 40 HP spindle, 7-inch Big Bore, A2-11 spindle nose, 18-inch chuck, 25.5-inch maximum turning diameter, and 44-inch turning length give the machine the capacity required for many heavy-duty turning applications.
The two-speed gearbox is especially valuable for heavy machining because it allows the machine to deliver substantial torque at lower spindle speeds. This makes the ST-40 appropriate for applications where cutting force is more important than high spindle RPM.
The machine’s large spindle opening also makes it particularly attractive for manufacturers working with large bar stock and tubular components.
WHY BUY USED HAAS ST-40 – 2012
A used HAAS ST-40 – 2012 can provide large-capacity turning capability at a significantly lower acquisition cost than a new large-frame CNC lathe.
Key advantages include:
- 40 HP spindle
- 7″ Big Bore configuration
- 18″ chuck
- A2-11 spindle nose
- 1,400 RPM spindle
- 25.5″ maximum turning diameter
- 44″ maximum turning length
- 34.5″ maximum swing
- 17″ X-axis travel
- 44″ Z-axis travel
- 2-speed gearbox
- Automatic turret
- Tailstock
- Haas CNC control
- Coolant system
- Chip conveyor availability
When buying a used ST-40, inspect the main spindle, spindle bearings, chuck, hydraulic system, gearbox, turret indexing, X/Z ballscrews, linear guides, tailstock, lubrication system, coolant system, chip conveyor, CNC control, and electrical cabinet.
For a Big Bore machine, particular attention should also be given to the spindle bore, spindle liner configuration, chuck condition, workholding accuracy, and condition of the spindle nose.
HOW MUCH DOES A USED HAAS ST-40 – 2012 COST?
Used HAAS ST-40 machines from 2012 can vary substantially in price depending on configuration. The Big Bore version, spindle bore, chuck size, machine hours, tooling, chip conveyor, tailstock, and overall condition can all have a major impact on value.
A documented 2012 HAAS ST-40 Big Bore has been offered with an 18-inch chuck, 7-inch bore, 40 HP spindle, and 44-inch turning length, making it a more specialized configuration than a standard smaller-bore ST-40.
A reasonable market estimate for a used HAAS ST-40 – 2012 is approximately $45,000–$80,000 USD, with Big Bore machines in excellent condition, equipped with desirable accessories and low operating hours, potentially selling above this range.
The final price depends on:
- Machine condition
- Spindle condition
- Machine hours
- Cutting hours
- Chuck size
- Big Bore configuration
- Turret condition
- Gearbox condition
- Tailstock condition
- Chip conveyor
- Tooling included
- Coolant system
- Maintenance history
- Machine location
- Whether the machine is currently under power
For a 2012 ST-40, the exact configuration should always be confirmed before assigning a final market value, especially because the standard ST-40 and Big Bore versions can have significantly different spindle, chuck, and capacity specifications.
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