The Haas Automation ST-20L is an industrial-grade CNC Lathes & Turning Centers powered by the Standard CNC. a top spindle speed of 4,000 RPM, and a 3-axis kinematic layout. It supports standardized digital factory monitoring via MTConnect.
Haas ST-20L long-bed lathe: 8.3 in (210 mm) chuck, 42.5 in (1,080 mm) turning length, 20 hp 4,000 rpm spindle, 2.5 in bar capacity.
| Standardized Parameters & Ratings | |
|---|---|
| Manufacturer (Brand) | Haas Automation (United States) |
| Machine Type | CNC Lathes & Turning Centers |
| CNC Controller System | Standard CNC |
| Number of Controlled Axes | 3-Axis Simultaneous / Positioning |
| Maximum Spindle Speed | 4,000 RPM |
| Spindle Motor Rating | 20.0 kW |
| Spindle Taper Interface | Standard |
| Approx. Machine Weight | 11,520 kg |
| Industrial IoT Protocol | MTConnect ANSI/MTC1.4 Compliant (Ethernet/TCP) |
| Chuck Size | 8.3 in (210 mm) |
| Max Swing | 21 in (533 mm) |
| Max Turning Diameter | 13 in (330 mm) |
| Max Turning Diameter With Bmt65 Turret | 11.75 in (298 mm) |
| Max Turning Length | 42.5 in (1,080 mm) |
| Bar Capacity | 2.5 in (64 mm) |
| X-Axis Travel | 8.4 in (213 mm) |
| Z-Axis Travel | 42.5 in (1,080 mm) |
| Rapid Traverse | 945 ipm (24 m/min) |
| Max Thrust X | 4,100 lbf (18,238 N) |
| Max Thrust Z | 5,100 lbf (22,686 N) |
| Spindle Nose | A2-6 |
| Spindle Drive | Direct Speed, Belt Drive |
| Spindle Motor Power | 20 hp (14.9 kW) |
| Max Spindle Speed | 4,000 rpm |
| Spindle Torque | 150 ft-lbf @ 500 rpm (203 N·m @ 500 rpm) |
| Spindle Bore | 3.5 in (88.9 mm) |
| Turret Stations | 12 |
| Turret Od Vs Id Tools | Any Combination (will vary with turret) |
| Turret Boring Bar Rear Clearance | 4 in (102 mm) |
| Coolant Capacity | 55 gal (208 L) |
| Air Required | 4 scfm @ 100 psi (113 L/min @ 6.9 bar) |
| Inline Air Hose | 3/8 in |
| Air Coupler | 3/8 in |
| Air Pressure Min | 80 psi (5.5 bar) |
| Electrical Low | 220 VAC 3-phase, 40 A |
| Electrical High | 440 VAC 3-phase, 20 A |
| Shipping Domestic Pallet | 190 × 90 × 90 in (483 × 229 × 229 cm) |
| Shipping Export Pallet | 190 × 90 × 90 in (483 × 229 × 229 cm) |
| Machine Weight | 11,520 lb |
Haas Automation publishes a list price of US$103,995 for the Haas ST-20L (verified 2026-10-02). Options, tooling, freight and installation are extra, so a dealer quote will differ. A specific price can be requested at https://machinetoolindex.com/machines/haas-st-20l#price; the request is passed to Haas Automation or an authorised dealer.
Maximum turning length and Z travel are both 42.5 in (1,080 mm), with a maximum turning diameter of 13 in (330 mm) and a swing of 21 in (533 mm). The spec table for this model does not list a tailstock or steady rest, so confirm with Haas how a part near full length will be supported.
Bed length. The ST-20 has 22.5 in (572 mm) of Z travel and weighs 8,820 lb (4,000 kg); the ST-20L has 42.5 in (1,080 mm) and weighs 11,520 lb. Chuck size, bar capacity, the 20 hp (14.9 kW) 4,000 rpm spindle, X travel and the 12-station turret are the same on both.
No. The table for the ST-20L gives X and Z only, with no live-tool, C-axis or Y-axis rows. The ST-20LY is the version of this bed length with ± 2 in (± 51 mm) of Y travel and live tools at 4,000 rpm, and its maximum turning diameter is 11.75 in (298 mm).
Bar capacity is 2.5 in (64 mm). The spindle bore itself is 3.5 in (88.9 mm) on an A2-6 nose, and the chuck is 8.3 in (210 mm). If you need more, the ST-25 is listed with 3 in (76 mm) of bar capacity through the same size of bore.
Electrical supply is 220 VAC three-phase at 40 A or 440 VAC three-phase at 20 A. Air consumption is 4 scfm at 100 psi (113 L/min at 6.9 bar), with a minimum supply pressure of 80 psi (5.5 bar) through a 3/8 in hose and coupler. The coolant tank holds 55 gal (208 L).
