The Haas Automation ST-55 is an industrial-grade CNC Lathes & Turning Centers powered by the Standard CNC. a top spindle speed of 1,000 RPM, and a 3-axis kinematic layout. It supports standardized digital factory monitoring via MTConnect.
Haas ST-55: 12.5 in (318 mm) spindle bore, 25.5 in turning diameter, 80 in turning length, 55 hp and 4,250 ft-lbf at 30 rpm, 1,000 rpm.
| 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 | 1,000 RPM |
| Spindle Motor Rating | 55.0 kW |
| Spindle Taper Interface | Standard |
| Approx. Machine Weight | 31,000 kg |
| Industrial IoT Protocol | MTConnect ANSI/MTC1.4 Compliant (Ethernet/TCP) |
| Swing Over Front Apron | 34.5 in (876 mm) |
| Swing Over Cross Slide | 25.5 in (648 mm) |
| Swing Over Tailstock | 25.5 in (648 mm) |
| Max Turning Diameter | 25.5 in (648 mm) |
| Max Turning Length | 80 in (2,032 mm) |
| X-Axis Travel | 17 in (432 mm) |
| Z-Axis Travel | 80 in (2,032 mm) |
| Rapid Traverse X | 710 ipm (18 m/min) |
| Rapid Traverse Z | 320 ipm (8.1 m/min) |
| Max Thrust X | 5,500 lbf (24,465 N) |
| Max Thrust Z | 9,000 lbf (40,034 N) |
| Spindle Nose | A1-20 Front & Rear |
| Spindle Motor Power | 55 hp (41 kW) |
| Max Spindle Speed | 1,000 rpm |
| Spindle Torque | 4,250 ft-lbf @ 30 rpm (5,762 N·m @ 30 rpm) |
| Spindle Bore | 12.5 in (318 mm) |
| Tailstock Taper | MT6 |
| Tailstock Travel | 76 in (1,930 mm) |
| Tailstock Max Thrust Acme | 4,500 lbf (20,017 N) |
| Tailstock Min Thrust Acme | 1,000 lbf (4,448 N) |
| Turret Stations | 12-Station BOT |
| Turret Od Vs Id Tools | Any Combination (will vary with turret) |
| 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, 105 A |
| Electrical High | 440 VAC 3-phase, 53 A |
| Shipping Domestic Pallet | 254 × 95 × 105 in (646 × 242 × 267 cm) |
| Shipping Export Pallet | 249 × 90 × 100 in (633 × 229 × 254 cm) |
| Machine Weight | 31,000 lb (14,062 kg) |
Haas Automation publishes a list price of US$355,995 for the Haas ST-55 (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-55#price; the request is passed to Haas Automation or an authorised dealer.
12.5 in (318 mm). The spindle nose is A1-20 at both the front and the rear. The table gives no chuck size or bar capacity for this model, so the diameter that actually passes through depends on the chucks fitted; confirm that with Haas against the pipe sizes you run.
Maximum turning diameter is 25.5 in (648 mm) and maximum turning length is 80 in (2,032 mm). Swing is 34.5 in (876 mm) over the front apron and 25.5 in (648 mm) over both the cross slide and the tailstock. X travel is 17 in (432 mm) and Z travel is 80 in (2,032 mm).
Both turn 80 in (2,032 mm) long and rapid at 320 ipm (8.1 m/min) on Z. The ST-40L has a 4.62 in (117.3 mm) bore, 40 hp (29.8 kW), 1,400 ft-lbf (1,898 N·m) at 150 rpm, 2,400 rpm and a 30 in (762 mm) turning diameter. The ST-55 has a 12.5 in (318 mm) bore, 55 hp (41 kW), 4,250 ft-lbf (5,762 N·m) at 30 rpm, 1,000 rpm and a 25.5 in (648 mm) turning diameter.
An MT6 taper, 76 in (1,930 mm) of travel, and thrust from a minimum of 1,000 lbf (4,448 N) to a maximum of 4,500 lbf (20,017 N). Swing over the tailstock is 25.5 in (648 mm), the same as over the cross slide.
A three-phase supply of 105 A at 220 VAC or 53 A at 440 VAC, and 4 scfm of air at 100 psi (113 L/min at 6.9 bar) with no less than 80 psi (5.5 bar). The coolant tank holds 95 gal (360 L). Shipping weight is 31,000 lb (14,062 kg); the domestic pallet measures 254 × 95 × 105 in (646 × 242 × 267 cm) and the export pallet 249 × 90 × 100 in (633 × 229 × 254 cm).
