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HAAS ST-20 CAPABILITIES

Machine Overview

The HAAS ST-20 is a compact, high-performance CNC turning center designed for precision machining of small to medium-sized components. Combining a powerful spindle, rigid construction, and programmable turret, the ST-20 delivers exceptional accuracy, repeatability, and efficiency for prototype, short-run, and production work. Its versatility makes it ideal for producing high-quality turned parts across a wide range of industries.

Materials Machined

  • Aluminum and aluminum alloys

  • Carbon steel

  • Stainless steel

  • Brass, bronze, and copper

  • Engineering plastics

  • Titanium and other specialty alloys
    (with appropriate tooling)

 

Typical Applications

  • Precision shafts

  • Bushings and spacers

  • Fittings and couplings

  • Threaded components

  • Pins and fasteners

  • Hydraulic and pneumatic components

  • Prototype and production turning

  • Tight-tolerance industrial and OEM parts

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Work Envelope / Physical Dimensions

  • Swing Over Bed: 21.0 in (533 mm)

  • Maximum Turning Diameter: 13.0 in (330 mm)

  • Maximum Turning Length: 22.5 in (572 mm)

  • Chuck Size: 8.3 in (210 mm)

  • Maximum Bar Capacity
    (Through Spindle): 2.5 in (64 mm)

Spindle Characteristics

  • Spindle Type: High-Torque CNC Turning Spindle

  • Max Spindle Speed: 4,000 RPM

  • Spindle Nose: A2-6

  • Spindle Bore: 3.06 in (78 mm)

  • Vector drive spindle system for smooth power delivery

  • Ideal balance of speed and torque for a wide range of materials

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Feed & Rapid Movements

  • Rapid Traverse (X & Z): Up to 945 IPM (24 m/min)

  • High-speed positioning for reduced cycle times

  • Smooth servo-driven motion for improved surface finishes

  • Excellent repeatability in production environments

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Tooling & Turret

  • Tooling System: Programmable 12-Station Turret

  • Supports turning, facing, boring, grooving, threading, and parting operations

  • Quick tool indexing minimizes downtime

  • Broad tooling compatibility for flexible part production

 

Control & Accuracy

  • CNC Control: HAAS CNC Control

  • Repeatability: ±0.0004 in (typical)

  • Part Accuracy: ±0.001 in (depends on material, tooling, and setup)

  • Programmable tool offsets

  • Thermal compensation and advanced diagnostics

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