The Haas Automation ST-25Y is an industrial-grade CNC Lathes & Turning Centers powered by the Standard CNC. a top spindle speed of 3,400 RPM, and a 3-axis kinematic layout. It supports standardized digital factory monitoring via MTConnect.
Haas ST-25Y: Y-axis lathe with 10 in (254 mm) chuck, 3 in bar capacity, 30 hp spindle, 4,000 rpm live tools and an optional sub-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 | 3,400 RPM |
| Spindle Motor Rating | 30.0 kW |
| Spindle Taper Interface | Standard |
| Approx. Machine Weight | 12,300 kg |
| Industrial IoT Protocol | MTConnect ANSI/MTC1.4 Compliant (Ethernet/TCP) |
| Chuck Size | 10 in (254 mm) |
| Max Swing | 21 in (533 mm) |
| Max Turning Diameter | 11.75 in (298 mm) |
| Max Turning Length | 22.5 in (572 mm) |
| Bar Capacity | 3 in (76 mm) |
| X-Axis Travel | 8.4 in (213 mm) |
| Y-Axis Travel | ± 2 in (± 51 mm) |
| Z-Axis Travel | 22.5 in (572 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 | A2-6 |
| Spindle Motor Power | 30 hp (22.4 kW) |
| Max Spindle Speed | 3,400 rpm |
| Spindle Torque | 300 ft-lbf @ 500 rpm (407 N·m @ 500 rpm) |
| Spindle Bore | 3.5 in (88.9 mm) |
| C Axis Max Rating | 5 hp (3.7 kW) |
| C Axis Speed | 60 rpm |
| 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 |
| Sub Spindle Chuck Size | 5.3 in (135 mm) |
| Sub Spindle Nose | A2-5 |
| Sub Spindle Speed | 6,000 rpm |
| Sub Spindle Max Sync Speed With Main Spindle | 3,400 rpm |
| Sub Spindle Chuck Throat | Ø 1.3 in × 1.37 in DEEP (Ø 33 mm × 34.8 mm DEEP) |
| Sub Spindle Drawbar Bore | Ø 1 in × 4.5 in DEEP (Ø 25.4 mm × 114.3 mm DEEP) |
| Sub Spindle Spindle Bore | 1.5 in (38.1 mm) |
| Sub Spindle Integrated Brake Torque | 17 ft-lbf (23 N·m) |
| Sub Spindle Spindle Orientation Accuracy | ± 0.02 ° |
| Sub Spindle Rapids | 400 ipm (10 m/min) |
| 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 | 142 × 90 × 92 in (361 × 229 × 234 cm) |
| Shipping Export Pallet | 143 × 90 × 92 in (364 × 229 × 234 cm) |
| Machine Weight | 12,300 lb (5,580 kg) |
Haas Automation publishes a list price of US$127,995 for the Haas ST-25Y (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-25y#price; the request is passed to Haas Automation or an authorised dealer.
The sub-spindle is an option. It has a 5.3 in (135 mm) chuck on an A2-5 nose, a 6,000 rpm maximum and a 3,400 rpm maximum when synchronised with the main spindle. Its bore is 1.5 in (38.1 mm), the integrated brake holds 17 ft-lbf (23 N·m), orientation accuracy is ± 0.02° and it rapids at 400 ipm (10 m/min).
Spindle size. The ST-20Y has an 8.3 in (210 mm) chuck, 2.5 in (64 mm) of bar capacity, 20 hp (14.9 kW) and 150 ft-lbf (203 N·m), with a 4,000 rpm spindle, and weighs 10,480 lb (4,754 kg). The ST-25Y has a 10 in (254 mm) chuck, 3 in (76 mm) of bar capacity, 30 hp (22.4 kW) and 300 ft-lbf (407 N·m), tops out at 3,400 rpm and weighs 12,300 lb (5,580 kg).
Y travel is ± 2 in (± 51 mm), so a live tool can work up to that distance either side of the spindle centreline without rotating the part. Beyond that the C axis repositions the work; it positions to 0.01° and can interpolate with the live tool. Y-axis thrust is 2,300 lbf (10,231 N).
The Y axis, C axis and BMT65 live tooling are in the base table, and WiFi is listed as standard. The sub-spindle, two-stage parts catcher, automatic parts loader, automatic door and the new-design tailstock are all listed as options, so none should be assumed on a base machine.
12,300 lb (5,580 kg). It runs on 220 VAC three-phase at 70 A or 440 VAC three-phase at 35 A, uses 4 scfm of air at 100 psi (113 L/min at 6.9 bar) with an 80 psi (5.5 bar) minimum, and carries 55 gal (208 L) of coolant.
