The Haas Automation ST-28LY is an industrial-grade CNC Lathes & Turning Centers powered by the Standard CNC. a top spindle speed of 3,200 RPM, and a 3-axis kinematic layout. It supports standardized digital factory monitoring via MTConnect.
Haas ST-28LY: big-bore Y-axis lathe, 4 in (102 mm) bar capacity, 42.5 in (1,080 mm) of Z, ± 2 in Y, 4,000 rpm live tools, 40 hp spindle.
| 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 | 3,200 RPM |
| Spindle Motor Rating | 40.0 kW |
| Spindle Taper Interface | Standard |
| Approx. Machine Weight | 12,700 kg |
| Industrial IoT Protocol | MTConnect ANSI/MTC1.4 Compliant (Ethernet/TCP) |
| Chuck Size | 12 in (305 mm) |
| Max Swing | 21 in (533 mm) |
| Max Turning Diameter | 11.75 in (298 mm) |
| Max Turning Length | 42.5 in (1,080 mm) |
| Bar Capacity | 4 in (102 mm) |
| X-Axis Travel | 9.4 in (239 mm) |
| Y-Axis Travel | ± 2 in (± 51 mm) |
| Z-Axis Travel | 42.5 in (1,080 mm) |
| Rapid Traverse X | 472 ipm (12 m/min) |
| Rapid Traverse Y | 472 ipm (12 m/min) |
| Rapid Traverse Z | 945 ipm (24 m/min) |
| Max Thrust X | 4,100 lbf (18,238 N) |
| Max Thrust Y | 2,300 lbf (10,231 N) |
| Max Thrust Z | 5,100 lbf (22,686 N) |
| Spindle Nose | A2-8 |
| Spindle Motor Power | 40 hp (29.8 kW) |
| Max Spindle Speed | 3,200 rpm |
| Spindle Torque | 425 ft-lbf @ 325 rpm (576 N·m @ 325 rpm) |
| Spindle Bore | 4.62 in (117.3 mm) |
| C Axis Speed | 60 rpm |
| C Axis Max Rating | 5 hp (3.7 kW) |
| C Axis Positioning | 0.01 ° |
| C Axis Brake Diameter | 13.9 in (353 mm) |
| C Axis Brake Holding Torque | 250 ft-lbf (339 N·m) |
| C Axis Control Type | Interpolated Motion and Positioning |
| Turret Stations | 12 |
| Turret Od Vs Id Tools | Any Combination (will vary with turret) |
| Turret Boring Bar Rear Clearance | 4 in (102 mm) |
| Live Tool Speed | 4,000 rpm |
| Live Tooling | BMT65 |
| 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, 70 A |
| Electrical High | 440 VAC 3-phase, 35 A |
| Shipping Domestic Pallet | 143 × 90 × 91 in (363 × 229 × 231 cm) |
| Shipping Export Pallet | 143 × 90 × 91 in (363 × 229 × 231 cm) |
| Machine Weight | 12,700 lb (5,760 kg) |
Haas Automation publishes a list price of US$179,995 for the Haas ST-28LY (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-28ly#price; the request is passed to Haas Automation or an authorised dealer.
A Y axis of ± 2 in (± 51 mm), an interpolating C axis and BMT65 live tools at 4,000 rpm. The ST-28L is two-axis, turns 13 in (330 mm) and weighs 12,000 lb. The ST-28LY turns 11.75 in (298 mm) and weighs 12,700 lb (5,760 kg). Chuck, bore, bar capacity and the 40 hp (29.8 kW) spindle are shared.
For the bar itself, yes: ± 2 in (± 51 mm) equals the radius of the 4 in (102 mm) bar capacity, so the tool centreline can travel across the full width of the largest bar. On chucked parts closer to the 11.75 in (298 mm) turning diameter the Y axis covers a band about the centreline, and the C axis indexes the part for anything outside it.
Control type is interpolated motion and positioning. Positioning is 0.01°, maximum speed 60 rpm and the maximum rating 5 hp (3.7 kW). The brake is 13.9 in (353 mm) in diameter with 250 ft-lbf (339 N·m) of holding torque.
Length and weight. The ST-28Y has 22.5 in (572 mm) of Z travel and weighs 10,860 lb (4,926 kg). The ST-28LY has 42.5 in (1,080 mm) and weighs 12,700 lb (5,760 kg). Both have the 12 in (305 mm) chuck, 4 in (102 mm) of bar capacity, the Y axis and 4,000 rpm live tools.
Three-phase power at 220 VAC and 70 A, or 440 VAC and 35 A. Air consumption is 4 scfm at 100 psi (113 L/min at 6.9 bar), and pressure at the machine must stay at or above 80 psi (5.5 bar). The coolant tank holds 55 gal (208 L).
