Haas ST-30L

$85,000 - $115,000 Updated 2026-03-16

Key Specifications

Max Spindle

3,400 RPM

Tool Capacity

12-station BOT (BMT-65 optional)

Spindle Power

22.4 kW (30 hp)

max swing

660 mm (26 in)

max cutting diameter

406 mm (16 in)

max cutting length

1,016 mm (40 in)

Overview

The Haas ST-30L is the long-bed version of the ST-30 turning center, stretching the Z-axis to 1,016 mm (40 in) for shafts, axles, and long-format production parts. The ST-30 platform steps up from the ST-20 with a bigger spindle, heavier castings, and more torque across the board.

The A2-8 spindle delivers 22.4 kW (30 hp) and 407 Nm (300 ft-lb) of torque at 350 RPM, with a max speed of 3,400 RPM. That's 50% more torque than the ST-20 platform. Max swing is 660 mm (26 in) with a cutting diameter of 406 mm (16 in) and a 101.6 mm (4 in) bar capacity through the drawtube bore.

The 12-station BOT or optional BMT-65 turret handles turning, grooving, threading, and drilling. Without Y-axis or live tooling, the ST-30L is a straightforward two-axis turning center optimized for long parts and throughput rather than mill-turn complexity.

The NGC control is standard Haas: conversational programming, G-code editing, and canned turning cycles. Nothing exotic, but proven and easy to staff.

At $85,000-$115,000 configured, the ST-30L is the value leader for long-bed turning in this size class. Shops that need to turn shafts up to 1,016 mm without stepping into the ST-35 or ST-40 territory get a capable machine at a Haas price point.

Full Specifications

Parameter	Value
Max Swing	660 mm (26 in)
Max Cutting Diameter	406 mm (16 in)
Max Cutting Length	1,016 mm (40 in)
Max Spindle Speed	3,400 RPM
Spindle Motor Power	22.4 kW (30 hp)
Spindle Torque	407 Nm (300 ft-lb) @ 350 RPM
Spindle Nose	A2-8
Spindle Bore	114.3 mm (4.5 in)
Chuck Size	264 mm (10.4 in)
Bar Capacity	101.6 mm (4 in)
X Axis Travel	264 mm (10.4 in)
Z Axis Travel	1,016 mm (40 in)
Rapid Traverse X	12 m/min (472 in/min)
Rapid Traverse Z	24 m/min (945 in/min)
Tool Capacity	12-station BOT (BMT-65 optional)
Coolant Capacity	246 L (65 gal)
CNC Control	Haas Next Generation Control (NGC)

Specifications sourced from haascnc.com — verified 2026-03-28

Strengths & Limitations

Strengths

1,016 mm (40 in) Z-axis travel handles shafts and long parts that most mid-size lathes can't reach
22.4 kW (30 hp) with 407 Nm of torque gives serious roughing power in steel and stainless
101.6 mm (4 in) bar capacity covers large-diameter barstock without bore modifications
A2-8 spindle nose accepts larger chucks for heavy chucking work
Significantly cheaper than Mazak QT-300 or Okuma LB4000 long-bed equivalents
Proven NGC control with large installed base and easy operator staffing

Limitations

No Y-axis or live tooling in the base L variant — off-center features require a second operation
3,400 RPM max spindle speed limits small-diameter aluminum finishing work
BOT turret is less rigid than BMT for heavy milling if you upgrade to live tooling later
Heavier castings and longer bed create a substantial footprint — plan floor space carefully
No sub-spindle option for back-working operations

Best For

Shaft manufacturers turning parts up to 1,016 mm (40 in) in length Job shops needing a high-torque long-bed lathe for steel and stainless roughing Production turning of axles, drive shafts, hydraulic cylinders, and threaded rods Shops stepping up from ST-20 platform for larger diameter and longer length capability Oil and gas, agricultural, and heavy equipment component manufacturers

Frequently Asked Questions

01 What does a Haas ST-30L cost?

Base price is around $85,000. Adding tailstock, chip conveyor, and common options brings configured price to $100,000-$115,000. The long-bed premium over the standard ST-30 is roughly $5,000-$7,000.

02 What is the difference between the ST-30 and ST-30L?

The ST-30L extends the Z-axis from 660 mm (26 in) to 1,016 mm (40 in). Spindle, chuck, and cross-slide specs are identical. The longer bed adds footprint and a small price premium. Choose the L variant when your parts regularly exceed 660 mm in length.

03 Can I add live tooling to the ST-30L?

The ST-30L can be ordered with optional BMT-65 turret and C-axis for live tooling capability. However, the LY variant (ST-30LY) is purpose-built for Y-axis milling work. If you know you need live tooling at purchase time, the LY is the better choice.

04 How does the ST-30L compare to the ST-20L for long parts?

The ST-30L has 50% more torque (407 vs 203 Nm), larger bar capacity (101.6 vs 63.5 mm), and a bigger chuck (264 vs 210 mm). For long parts in tougher materials or larger diameters, the ST-30L is the clear choice. The ST-20L is lighter and cheaper for smaller-diameter long work.