Haas Automation CNC Lathes / Turning Centers

Haas ST-45

List US$187,995 Specs verified 2026-10-02 · haascnc.com Updated 2026-10-02

Image: haascnc.com, Haas Automation

Key Specifications

X Travel

20 in (508 mm)

Z Travel

44 in (1,118 mm)

Max Spindle

1,400 rpm

Rapid Traverse

710 ipm (18 m/min)

Spindle Power

40 hp (29.8 kW)

Max Turn Length

44 in (1,118 mm)

How much does the Haas ST-45 cost?

Manufacturer list price

US$187,995

As published by Haas Automation, verified 2026-10-02. Options, tooling, freight and installation are extra.

Overview

The Haas ST-45 takes a 30 in (762 mm) by 44 in (1,118 mm) turning envelope and puts a 7 in (178 mm) spindle bore in it, on an A2-11 nose. Top speed is 1,400 rpm, and the 40 hp (29.8 kW) spindle makes 1,400 ft-lbf (1,898 N·m) at 150 rpm through a 2-speed gearbox.

The useful way to read this machine is against the ST-40, which has the same envelope, power and torque but a 4.62 in (117.3 mm) bore, an A2-8 nose and 2,400 rpm. So the choice is bore against speed. If the stock or the shaft end will pass through the ST-40's bore, the faster machine finishes small diameters better. If it will not, this is the model.

How much actually passes through depends on workholding, and here the table is specific. No chuck size is given for the base machine. An 18 in (457 mm) chuck is listed as optional, and the kit rows for it show a 6.5 in (165 mm) draw tube bore and a 1,400 rpm limit. Bar capacity is 6.5 in (165 mm) with that optional workholding, not the full 7 in of the spindle bore. Settle the chuck and draw tube with Haas before assuming a given pipe size will fit.

X travel is 20 in (508 mm) and the rapid rate is 710 ipm (18 m/min). Thrust is 5,500 lbf (24,465 N) on X and 9,000 lbf (40,034 N) on Z. The MT5 tailstock travels 42 in (1,067 mm). The 12-station BOT turret has 4.5 in (114 mm) of rear boring-bar clearance, and with a BMT75 turret the turning diameter is 27.5 in (699 mm). An XP option lifts the spindle to 55 hp (41 kW) and 2,100 ft-lbf (2,847 N·m) at 150 rpm.

Haas lists a starting price of US$187,995. Listed weight is 20,800 lb, or 22,100 lb (10,024 kg) in the export crate.

Full Specifications

Parameter	Value
Chuck Optional	18 in (457 mm)
Max Swing	35.5 in (902 mm)
Max Turning Diameter	30 in (762 mm)
Max Turning Diameter with Bmt75 Turret	27.5 in (699 mm)
Max Turning Length	44 in (1,118 mm)
Bar Capacity with Opt Workholding	6.5 in (165 mm)
X-Axis Travel	20 in (508 mm)
Z-Axis Travel	44 in (1,118 mm)
Rapid Traverse Rate	710 ipm (18 m/min)
Max Thrust X	5,500 lbf (24,465 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 (178 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
Pc18kit Chuck Size	18 in (457 mm)
Pc18kit Max Speed	1,400 rpm
Pc18kit Draw Tube Bore	6.5 in (165 mm)
Tailstock Taper	MT5
Tailstock Travel	42 in (1,067 mm)
Tailstock Max Thrust Acme	3,000 lbf (13,345 N)
Tailstock Min Thrust Acme	200 lbf (890 N)
Turret Stations	12-Station BOT
Turret OD Vs ID Tools	Any Combination (will vary with turret)
Turret Boring Bar Rear Clearance	4.5 in (114 mm)
Turret Tooling	BOT
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 Service (low voltage)	220 VAC 3-phase, 70 A
Electrical Service (high voltage)	440 VAC 3-phase, 35 A
Shipping Domestic Pallet	217 × 96 × 116 in (551 × 244 × 295 cm)
Shipping Export Crate	217 × 98 × 120 in (551 × 249 × 305 cm)
Machine Weight	20,800 lb
Machine Weight Export Crate	22,100 lb (10,024 kg)

Specifications sourced from haascnc.com — verified 2026-10-02

Strengths & Limitations

Strengths

7 in (178 mm) spindle bore on an A2-11 nose
6.5 in (165 mm) bar capacity with the optional 18 in (457 mm) chuck and its draw tube
1,400 ft-lbf (1,898 N·m) at 150 rpm, the same torque as the smaller-bore ST-40
30 in (762 mm) turning diameter and 44 in (1,118 mm) turning length
XP option: 55 hp (41 kW) and 2,100 ft-lbf (2,847 N·m) at 150 rpm

Limitations

Maximum speed is 1,400 rpm; the ST-40 reaches 2,400 rpm
The 18 in (457 mm) chuck is optional and the table gives no base chuck size
Usable bar capacity is 6.5 in (165 mm), less than the 7 in (178 mm) bore
Power stays at 40 hp (29.8 kW) unless the XP option is ordered, and XP needs 105 A at 220 VAC or 53 A at 440 VAC

Best For

Couplings, tube and large bar up to 6.5 in (165 mm) through the spindle Long shafts whose ends pass into the 7 in (178 mm) bore Large-diameter chucking work up to 30 in (762 mm) Heavy turning at low rpm, where the 150 rpm torque peak applies

Frequently Asked Questions

01 What is the spindle bore of the ST-45, and how much bar fits?

The spindle bore is 7 in (178 mm). Bar capacity is listed as 6.5 in (165 mm) with optional workholding, which matches the 6.5 in (165 mm) draw tube bore shown for the 18 in (457 mm) chuck kit. Treat 6.5 in as the working figure unless Haas confirms a different workholding arrangement.

02 ST-45 or ST-40: which one fits my work?

They share the 30 in (762 mm) by 44 in (1,118 mm) envelope, 40 hp (29.8 kW) and 1,400 ft-lbf (1,898 N·m) at 150 rpm. The ST-40 has a 4.62 in (117.3 mm) bore, 4 in (102 mm) of bar capacity and 2,400 rpm. The ST-45 has a 7 in (178 mm) bore and 1,400 rpm. Pick the ST-45 only if the material has to go through the larger bore, because the lower top speed is a real handicap on small diameters.

03 Does the ST-45 come with a chuck?

The table does not say. It lists an 18 in (457 mm) chuck as optional, with kit rows showing a 1,400 rpm maximum speed and a 6.5 in (165 mm) draw tube bore, and it gives no chuck size for the base machine. Ask Haas what workholding the starting configuration includes.

04 What does the XP option do on the ST-45?

It raises spindle output from 40 hp (29.8 kW) and 1,400 ft-lbf (1,898 N·m) to 55 hp (41 kW) and 2,100 ft-lbf (2,847 N·m), both at 150 rpm, with the 2-speed gearbox and the 1,400 rpm limit retained. Full-load current goes from 70 A to 105 A at 220 VAC, or from 35 A to 53 A at 440 VAC.

05 What tailstock and turret figures apply to the ST-45?

Tailstock: MT5 taper, 42 in (1,067 mm) of travel, 200 lbf (890 N) minimum and 3,000 lbf (13,345 N) maximum thrust. Turret: 12-station BOT, any combination of OD and ID tools, 4.5 in (114 mm) of rear clearance for boring bars. With a BMT75 turret the maximum turning diameter is 27.5 in (699 mm) instead of 30 in (762 mm).