Haas ST-45L

$257,995 - $340,000 Updated 2026-03-19

Key Specifications

Max Spindle

1,400 RPM

Spindle Taper

A2-11

Tool Capacity

12-station BOT

Spindle Power

40.0 hp

max part swing

35.5 in

max cutting diameter

27.50 in

Overview

The Haas ST-45L is the long-bed extension of the ST-45 large-bore turning center, stretching the Z-axis to 2,032 mm (80 in) for long-shaft, pipe, and tubular work that exceeds the standard ST-45's 1,118 mm (44 in) reach. It retains the same 178 mm (7.0 in) spindle bore, A2-11 spindle nose, and 457 mm (18 in) chuck that define the ST-45 platform.

The 29.8 kW (40 hp) spindle drives through a 2-speed gearbox, producing 1,898 Nm (1,400 ft-lb) of torque at 150 RPM with a max speed of 1,400 RPM. The optional XP high-performance spindle bumps output to 41.0 kW (55 hp) and 2,847 Nm (2,100 ft-lb) for aggressive roughing on long, heavy workpieces. Axis travels are 508 mm (20 in) in X and 2,032 mm (80 in) in Z, with rapids at 18.0 m/min (710 ipm) on both axes.

The ST-45L is purpose-built for oil and gas shops threading long pipe, coupling manufacturers machining extended tubular components, and heavy industrial facilities turning long shafts that must pass through the 7-inch bore. The 80-inch bed handles workpieces that would require the ST-55 on the standard ST-45 — but with the ST-45's more manageable footprint and price point.

The 12-station BOT turret is standard, with optional BMT75 live tooling and C-axis available. The MT5 tailstock supports long workpieces during turning. The NGC control handles conversational programming, G-code, and canned turning cycles.

Starting at approximately $257,995, the ST-45L fills a critical niche between the standard ST-45 and the massive ST-55. Shops that need long-bed large-bore capacity without the ST-55's 31,000 lb weight class and $356K price tag get a capable machine at a significantly lower investment.

Full Specifications

Parameter	Value
Max Part Swing	35.5 in
Max Cutting Diameter	27.50 in
Max Cutting Length	80.0 in
Chuck Size	18.0 in
Bar Capacity	165 mm (6.5 in) with optional workholding
Spindle Nose	A2-11
Spindle Bore	7.00 in
Max Spindle Speed	1,400 RPM
Spindle Motor Power	40.0 hp
Spindle Torque	1,898 Nm (1,400 ft-lb) @ 150 RPM
Spindle Drive	2-Speed Gearbox
Xp Spindle Power	41.0 kW (55 hp)
Xp Spindle Torque	2,847 Nm (2,100 ft-lb) @ 150 RPM
X Axis Travel	508 mm (20 in)
Z Axis Travel	2,032 mm (80 in)
Rapid Traverse X	18.0 m/min (710 ipm)
Rapid Traverse Z	18.0 m/min (710 ipm)
Max Thrust X	5500 lbf
Max Thrust Z	9000 lbf
Tool Capacity	12-station BOT
Tailstock Taper	MT5
Coolant Capacity	95 gal
Machine Weight	29900 lb
CNC Control	Haas Next Generation Control (NGC)
Capacities	S.A.E
Chuck	18.0 in
Bar Capacity W Opt Workholding	6.50 in
Travels	S.A.E
X Axis	20.00 in
Z Axis	80.00 in
Feedrates	S.A.E
Rapids On X	710 ipm
Rapids On Z	320 ipm
Axis Motors	S.A.E
Spindle	S.A.E
Spindle Taper	A2-11
Max Rating	55.0 hp
Max Speed	1400 rpm
Max Torque	2100.0 ft-lbf @ 150 rpm
Xp Option	S.A.E
Drive System	2-Speed Gearbox
Input Ac Voltage Low	220 VAC
Full Load Amps Low	70 A
Input Ac Voltage High	440 VAC
Full Load Amps High	35 A
Pc18kit	S.A.E
Draw Tube Bore	6.50 in
Tailstock	S.A.E
Taper	MT5
Travel	84.5 in
Max Thrust	3,000 lbf
Min Thrust	200 lbf
Turret	S.A.E
Od Vs Id Tools	Any Combination (will vary with turret)
Boring Bar Rear Clearance	4.37 in
General	S.A.E
Air Requirements	S.A.E
Air Required	4 scfm @ 100 psi
Inline Air Hose	3/8 in
Coupler	3/8 in
Air Pressure Min	80 psi
Electrical Specification	S.A.E
Dimensions Shipping	S.A.E
Domestic Pallet	254.0 in x 95.0 in x 105.0 in
Export Crate	254.0 in x 96.0 in x 120.5 in

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

Strengths & Limitations

Strengths

2,032 mm (80 in) Z-axis travel handles long pipe, shaft, and tubular work that the standard ST-45 cannot reach at 1,118 mm
Same 7.0-inch spindle bore and A2-11 spindle nose as the ST-45, providing large through-bore capacity for pipe and hollow components
40 hp spindle with 1,400 ft-lb torque through a 2-speed gearbox delivers heavy material removal on long workpieces
Optional XP spindle upgrade to 55 hp and 2,100 ft-lb for the most demanding oil and gas roughing applications
At ~$258K starting, significantly cheaper than the ST-55 ($356K) while matching its 80-inch Z-axis travel
MT5 tailstock provides critical support for long, heavy workpieces during turning operations

Limitations

1,400 RPM max spindle speed limits surface speed on smaller-diameter work and aluminum finishing
Estimated 27,000 lb machine weight requires heavy-duty rigging, reinforced flooring, and careful site preparation
80-inch bed creates a substantial floor space requirement that many shops cannot accommodate
18-inch chuck and large spindle assembly result in longer acceleration and deceleration times between operations

Best For

Oil and gas manufacturers threading long pipe, casing, and downhole tools requiring 7-inch bore and 80-inch length Coupling and connector manufacturers machining extended tubular components that exceed the standard ST-45 bed Long shaft and axle manufacturers needing large through-bore turning capacity up to 2,032 mm Pipeline equipment producers machining long flanged assemblies and pipe fittings Shops already running ST-45 machines that need extended-length capability on the same platform

Frequently Asked Questions

01 What does a new Haas ST-45L cost?

The ST-45L starts at approximately $257,995. With the XP spindle, BMT75 live tooling, tailstock, chip conveyor, and high-pressure coolant, configured prices reach $310,000-$340,000. The long-bed premium over the standard ST-45 is approximately $70,000.

02 What is the difference between the ST-45L and the ST-55?

Both have 80-inch Z-axis travel, but they differ significantly in bore and power. The ST-55 has a 12.5-inch bore versus the ST-45L's 7.0-inch bore, 55 hp versus 40 hp, and 4,250 ft-lb versus 1,400 ft-lb of torque. The ST-55 weighs 31,000 lb versus the ST-45L's ~27,000 lb. Choose the ST-45L when 7-inch bore is sufficient. Choose the ST-55 when you need the largest bore Haas offers.

03 Can the ST-45L run with live tooling?

Yes, with the optional BMT75 turret and C-axis. Live tooling at 4,000 RPM enables cross-drilling, milling, and tapping on long parts without a second setup. This is valuable for pipe flanges and couplings that require cross-holes and bolt patterns along the length of the workpiece.

04 What floor preparation does the ST-45L require?

At approximately 27,000 lb, the ST-45L requires a reinforced concrete floor, typically 10-12 inches minimum thickness with rebar, and level to within 0.001 inch per foot. The 80-inch bed adds significant length to the machine footprint. Consult your Haas HFO dealer for a site survey before purchase.