The Haas Automation ST-45SY is an industrial-grade CNC Lathes & Turning Centers powered by the Standard CNC. a top spindle speed of 1,400 RPM, and a 3-axis kinematic layout. It supports standardized digital factory monitoring via MTConnect.
Haas ST-45SY: large-bore Y-axis lathe with a 7 in bore, ± 3 in Y travel, 4,000 rpm BMT75 live tools, 28 in Z travel and a 27.5 in turning diameter.
| 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 | 1,400 RPM |
| Spindle Motor Rating | 40.0 kW |
| Spindle Taper Interface | Standard |
| Industrial IoT Protocol | MTConnect ANSI/MTC1.4 Compliant (Ethernet/TCP) |
| Chuck Optional | 18 in (457 mm) |
| Max Swing | 35.5 in (902 mm) |
| Max Turning Diameter | 27.5 in (699 mm) |
| Max Turning Length | 28 in (711 mm) |
| Bar Capacity With Opt Workholding | 6.5 in (165 mm) |
| X-Axis Travel | 20 in (508 mm) |
| Y-Axis Travel | ± 3 in (± 76 mm) |
| Z-Axis Travel | 28 in (711 mm) |
| Rapid Traverse X | 472 ipm (12 m/min) |
| Rapid Traverse Y | 472 ipm (12 m/min) |
| Rapid Traverse Z | 710 ipm (18 m/min) |
| Max Thrust X | 5,500 lbf (24,465 N) |
| Max Thrust Y | 2,300 lbf (10,231 N) |
| Max Thrust Z | 9,000 lbf (40,034 N) |
| Spindle Nose | A2-11 |
| Spindle Drive | 2-Speed Gearbox |
| Spindle Motor Power | 40 hp (29.8 kW) |
| Max Spindle Speed | 1,400 rpm |
| Spindle Torque | 1,400 ft-lbf @ 150 rpm (1,898 N·m @ 150 rpm) |
| Spindle Bore | 7 in (177.8 mm) |
| Xp Option Drive System | 2-Speed Gearbox |
| Xp Option Max Rating | 55 hp (41 kW) |
| Xp Option Max Speed | 1,400 rpm |
| Xp Option Max Torque | 2,100 ft-lbf @ 150 rpm (2,847 N·m @ 150 rpm) |
| Xp Option Input Ac Voltage Low | 220 VAC |
| Xp Option Full Load Amps Low | 105 A |
| Xp Option Input Ac Voltage High | 440 VAC |
| Xp Option Full Load Amps High | 53 A |
| C Axis Max Rating | 5 hp (3.7 kW) |
| C Axis Speed | 49 rpm |
| C Axis Positioning | 0.01 ° |
| C Axis Brake Diameter | 21.5 in (546 mm) |
| C Axis Brake Holding Torque | 450 ft-lbf (610 N·m) |
| C Axis Control Type | Interpolated Motion and Positioning |
| Tailstock Taper | MT5 |
| Tailstock Travel | 26 in (660 mm) |
| Tailstock Max Thrust Acme | 3,000 lbf (13,345 N) |
| Tailstock Min Thrust Acme | 200 lbf (890 N) |
| Turret Stations | 12 |
| Turret Od Vs Id Tools | Any Combination (will vary with turret) |
| Turret Index Time | 2 s |
| Turret Boring Bar Rear Clearance From Turret Face | 4.5 in (114 mm) |
| Turret Tooling | BMT75 |
| Live Tool Speed | 4,000 rpm |
| Live Tooling | BMT75 |
| Coolant Capacity | 95 gal (360 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 | 217 × 95 × 116 in (551 × 241 × 295 cm) |
| Shipping Export Crate | 217 × 95.5 × 120.5 in (551 × 243 × 306 cm) |
Haas Automation publishes a list price of US$228,995 for the Haas ST-45SY (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-45sy#price; the request is passed to Haas Automation or an authorised dealer.
Y travel is ± 3 in (± 76 mm), with 2,300 lbf (10,231 N) of thrust and a 472 ipm (12 m/min) rapid. It lets a live tool cut off the spindle centreline, which is what flats, keyways and offset holes need. Live tools use BMT75 tooling and run to 4,000 rpm.
The C axis has a 5 hp (3.7 kW) maximum rating and turns at up to 49 rpm. Positioning is 0.01°, and the control type is listed as interpolated motion and positioning. The brake is 21.5 in (546 mm) in diameter and holds 450 ft-lbf (610 N·m), which is the limit for off-centre milling and drilling against a clamped spindle.
Both have ± 3 in (± 76 mm) of Y, 472 ipm (12 m/min) X and Y rapids, a 27.5 in (699 mm) turning diameter and 4,000 rpm live tools. The ST-40LY has 80 in (2,032 mm) of Z, a 4.62 in (117.3 mm) bore and 2,400 rpm. The ST-45SY has 28 in (711 mm) of Z, a 7 in (177.8 mm) bore and 1,400 rpm.
The table lists the chuck as an option, at 18 in (457 mm). Bar capacity is given as 6.5 in (165 mm) with optional workholding, slightly under the 7 in (177.8 mm) spindle bore. Settle the chuck, jaws and any draw tube with Haas when the machine is quoted, because they decide what stock the bore can actually pass.
220 VAC three-phase at 70 A, or 440 VAC three-phase at 35 A. With the XP spindle option (55 hp / 41 kW) the full-load figures are 105 A at 220 VAC and 53 A at 440 VAC. Air demand is 4 scfm at 100 psi (113 L/min at 6.9 bar), with 80 psi (5.5 bar) as the minimum supply pressure.
