Haas Automation CNC Lathes / Turning Centers

Haas ST-30Y

List US$134,995 Specs verified 2026-10-02 · haascnc.com Updated 2026-10-02

Key Specifications

X Travel

9.4 in (239 mm)

Y Travel

± 2 in (± 51 mm)

Z Travel

32.5 in (826 mm)

Max Spindle

3,400 rpm

Spindle Power

30 hp (22.4 kW)

Max Turn Length

32.5 in (826 mm)

How much does the Haas ST-30Y cost?

Manufacturer list price

US$134,995

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

Overview

The Haas ST-30Y is a Y-axis turn-mill lathe with a 13.75 in (349 mm) maximum turning diameter and 32.5 in (826 mm) between centers. It has ± 2 in (± 51 mm) of Y travel, BMT65 live tools at up to 4,000 rpm, a 10 in (254 mm) chuck and a 30 hp (22.4 kW) main spindle.

The Y axis takes a little off the envelope. This machine turns 13.75 in where the two-axis ST-30 turns 15 in (381 mm), and it weighs 11,340 lb (5,143 kg) against 10,900 lb (4,944 kg) for the ST-30. The ST-28Y is the alternative for thicker bar: 4 in (102 mm) of bar capacity and 425 ft-lbf (576 N·m) at 325 rpm, but an 11.75 in (298 mm) turning diameter and 22.5 in (572 mm) of turning length.

For milling, the C axis interpolates and positions to 0.01° at up to 60 rpm, and its brake holds 250 ft-lbf (339 N·m). Live tools top out above the main spindle's 3,400 rpm. Y thrust is 2,300 lbf (10,231 N). On a part near the full turning diameter the Y stroke covers only a band about the centreline, so bolt circles and features further out are reached by rotating the C axis.

Two options change what the machine can do. The gearbox lifts spindle torque from 300 ft-lbf (407 N·m) at 500 rpm to 1,000 ft-lbf (1,356 N·m) at 150 rpm. The sub-spindle brings a 6.5 in (165 mm) chuck, 4,100 rpm, a 2.31 in (58.7 mm) bore and synchronised running to 3,400 rpm, for finishing the second side in the same cycle. A two-stage parts catcher and an automatic door are optional as well.

WiFi, HaasDrop wireless file transfer, Safe Run and HaasConnect remote monitoring are standard. Haas lists a starting price of US$134,995.

Full Specifications

Parameter	Value
Chuck Size	10 in (254 mm)
Max Swing	21 in (533 mm)
Max Turning Diameter	13.75 in (349 mm)
Max Turning Length	32.5 in (826 mm)
Bar Capacity	3 in (76 mm)
Distance Between Centers	32.5 in (826 mm)
X-Axis Travel	9.4 in (239 mm)
Y-Axis Travel	± 2 in (± 51 mm)
Z-Axis Travel	32.5 in (826 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 Torque (optional gearbox)	1,000 ft-lbf @ 150 rpm (1,356 N·m @ 150 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	6.5 in (165 mm)
Sub Spindle Nose	A2-5
Sub Spindle Speed	4,100 rpm
Sub Spindle Max Sync Speed with Main Spindle	3,400 rpm
Sub Spindle Chuck Throat	Ø 1.81 in × 1.6 in DEEP (Ø 46 mm × 40.6 mm DEEP)
Sub Spindle Drawbar Adapter Bore	Ø 1.18 in × 3.09 in DEEP
Sub Spindle Drawbar Bore	Ø 1.03 in × 4.91 in DEEP (Ø 26.2 mm × 124.7 mm DEEP)
Sub Spindle Spindle Bore	2.31 in (58.7 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 Service (low voltage)	220 VAC 3-phase, 70 A
Electrical Service (high voltage)	440 VAC 3-phase, 35 A
Shipping Domestic Pallet	171 × 90 × 98 in (435 × 229 × 249 cm)
Shipping Export Pallet	171 × 90 × 98 in (435 × 229 × 249 cm)
Machine Weight	11,340 lb (5,143 kg)

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

Strengths & Limitations

Strengths

Y axis, interpolating C axis and 4,000 rpm BMT65 live tools with a 13.75 in (349 mm) turning diameter
32.5 in (826 mm) between centers, against 22.5 in (572 mm) of turning length on the ST-28Y
Optional gearbox lifts spindle torque to 1,000 ft-lbf (1,356 N·m) at 150 rpm
Optional sub-spindle: 6.5 in (165 mm) chuck, 4,100 rpm, 2.31 in (58.7 mm) bore
Safe Run, HaasDrop, HaasConnect remote monitoring and WiFi are standard

Limitations

Y travel of ± 2 in (± 51 mm) is small against a 13.75 in (349 mm) turning diameter
Sub-spindle, gearbox, parts catcher and automatic door are options
Bar capacity is 3 in (76 mm); the ST-28Y takes 4 in (102 mm)
X and Y rapids of 472 ipm (12 m/min) are half the Z rapid of 945 ipm (24 m/min)
The optional sub-spindle's brake holds 17 ft-lbf (23 N·m), a fraction of the 250 ft-lbf (339 N·m) main C-axis brake

Best For

Larger-diameter turn-mill parts up to 13.75 in (349 mm) Flanges, hubs and housings with bolt circles and milled faces Two-sided parts, with the optional sub-spindle Steel parts that need the optional gearbox for low-speed torque

Frequently Asked Questions

01 What does the ST-30Y give up to gain a Y axis, compared with the ST-30?

Turning diameter and X rapid. The ST-30 turns 15 in (381 mm) and rapids at 945 ipm (24 m/min) on both axes. The ST-30Y turns 13.75 in (349 mm), and its X and Y rapids are 472 ipm (12 m/min). Z travel of 32.5 in (826 mm), the chuck, bar capacity and the 30 hp (22.4 kW) spindle are unchanged.

02 What are the optional sub-spindle's figures on the ST-30Y?

A 6.5 in (165 mm) chuck on an A2-5 nose, 4,100 rpm maximum, 3,400 rpm maximum when synchronised with the main spindle, and a 2.31 in (58.7 mm) bore. The chuck throat is 1.81 in in diameter by 1.6 in deep (46 mm by 40.6 mm). The integrated brake holds 17 ft-lbf (23 N·m), orientation accuracy is ± 0.02° and rapids are 400 ipm (10 m/min).

03 Should I look at the ST-30Y or the ST-28Y?

It depends on whether diameter or bore matters more. The ST-28Y passes 4 in (102 mm) bar through a 4.62 in (117.3 mm) bore and has 40 hp (29.8 kW), but turns 11.75 in (298 mm) by 22.5 in (572 mm). The ST-30Y passes 3 in (76 mm) bar, has 30 hp (22.4 kW), and turns 13.75 in (349 mm) by 32.5 in (826 mm).

04 How fast do the live tools and the C axis run?

Live tools run to 4,000 rpm on BMT65 tooling. The C axis runs to 60 rpm, with a 5 hp (3.7 kW) maximum rating and 0.01° positioning, and Haas lists its control type as interpolated motion and positioning. The C-axis brake is 13.9 in (353 mm) in diameter and holds 250 ft-lbf (339 N·m).

05 What comes standard on the connectivity side?

Haas lists WiFi, HaasDrop wireless file transfer, Safe Run and HaasConnect remote monitoring as standard on the ST-30Y. The two-stage automatic parts catcher, sub-spindle and automatic door are options. The feature list also cites new castings with increased rigidity and damping, and improved chip evacuation.