Haas ST-45LY

$265,000 - $330,000 Updated 2026-03-19

Key Specifications

Max Spindle

1,400 RPM

Spindle Taper

A2-11

Tool Capacity

12 Stations

Spindle Power

40.0 hp

max part swing

35.5 in

max cutting diameter

27.50 in

Overview

The Haas ST-45LY combines the large-bore spindle of the ST-45 with an extended long-bed Z-axis and Y-axis milling capability. With a 178 mm (7.0 in) spindle bore, A2-11 spindle nose, and 2,032 mm (80 in) of Z-axis travel, the ST-45LY is purpose-built for long tubular work, pipe fittings, and extended hollow components that need cross-holes, flats, and milled features.

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. Max spindle speed is 1,400 RPM, lower than the ST-40 due to the larger-diameter spindle assembly and heavier 457 mm (18 in) chuck. An optional XP high-performance spindle bumps output to 41.0 kW (55 hp) and 2,847 Nm (2,100 ft-lb) for heavy roughing.

The BMT75 turret provides 12 stations of live tooling at 4,000 RPM with 5.6 kW (7.5 hp). Y-axis travel of 102 mm (4.0 in) total enables cross-drilling, milling flats, and off-center feature work on long pipe and tubular components. C-axis positioning resolves to 0.01 degrees.

The combination of 7-inch bore, 80-inch Z-travel, and Y-axis milling makes the ST-45LY unique. It handles complete processing of long pipe, casing, and tubular work that would otherwise require multiple machines and setups. Thread the bore, turn the OD, mill cross-holes, and cut bolt patterns all in one clamping.

At $265,000-$330,000 configured, the ST-45LY targets oil and gas, pipeline, valve manufacturing, and heavy industrial shops where long tubular work with milled features dominates the workload. Specs derived from Haas Automation published ST-45 and ST-40Y data.

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)
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)
Y Axis Travel	102 mm (4.0 in) total / ±50.8 mm (±2.0 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)
Tool Capacity	12 Stations
Live Tooling Speed	4,000 RPM
Live Tooling Power	5.6 kW (7.5 hp)
C Axis Positioning	±0.01°
Tailstock Taper	MT5
Coolant Capacity	95 gal
Machine Weight	12,701 kg (28,000 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
Y Axis	± 3.0 in
Z Axis	80.00 in
Feedrates	S.A.E
Rapids On X	472 ipm
Rapids On Y	472 ipm
Rapids On Z	320 ipm
Axis Motors	S.A.E
Max Thrust X	5500 lbf
Max Thrust Y	2300 lbf
Max Thrust Z	9000 lbf
Spindle	S.A.E
Spindle Taper	A2-11
Max Rating	5.0 hp
Max Speed	4000 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
Main Spindle C Axis	S.A.E
Positioning	0.01 °
Brake Diameter	21.5 in
Brake Holding Torque	450 ft-lbf
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)
Index Time	2 s
Boring Bar Rear Clearance	4.50 in
Tooling	BMT75
Live Tooling	S.A.E
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

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

Strengths & Limitations

Strengths

7.0-inch spindle bore with 80-inch Z-travel handles long tubular and pipe work that no other Haas Y-axis lathe can accept
BMT75 turret with 7.5 hp live tooling and Y-axis enables milling cross-holes and features on long pipe and tubular components
40 hp spindle with 1,400 ft-lb of torque provides ample power for heavy material removal on large-diameter pipe and casing
18-inch chuck on A2-11 nose securely clamps large-bore tubular workpieces for both turning and milling operations
Complete processing of long tubular parts in one setup eliminates multiple machine handling and improves accuracy
Optional XP spindle upgrade to 55 hp and 2,100 ft-lb for the most demanding oil and gas applications

Limitations

1,400 RPM max spindle speed limits surface speed on smaller-diameter work and aluminum finishing
Machine weight approaching 12,700 kg requires heavy-duty foundation and professional rigging
At $265-330K, this is a significant capital investment for specialized large-bore long-bed work
18-inch chuck and large spindle assembly result in longer acceleration and deceleration times

Best For

Oil and gas manufacturers turning long pipe, casing, and couplings with cross-holes and bolt patterns Pipeline shops machining long tubular components with milled features along the length Valve manufacturers producing large-bore valve bodies and bonnets with cross-drilled ports Heavy industrial shops turning long hollow shafts and sleeves with off-center milled features Shops that need to process long large-bore components complete in one setup

Frequently Asked Questions

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

Base price starts around $265,000. Configured with XP spindle, tailstock, chip conveyor, high-pressure coolant, and steady rests, expect $300,000-$330,000. The long-bed Y-axis premium over the base ST-45 is approximately $75,000-$85,000.

02 What is the difference between the ST-45LY and the ST-40LY?

The ST-45LY has a 178 mm (7.0 in) spindle bore with an A2-11 nose and 18-inch chuck, while the ST-40LY has a 117.3 mm (4.62 in) bore with A2-8 and 15-inch chuck. The ST-45LY runs a lower 1,400 RPM max speed. Z-travel and Y-axis specs are identical. Choose the ST-45LY when large through-bore capacity is required.

03 Can the ST-45LY thread large-bore pipe?

Yes. The C-axis, live tooling, and large bore make the ST-45LY well-suited for threading operations on pipe and casing. The 7-inch bore passes pipe stock through the spindle for efficient threading, and the 80-inch Z-travel handles extended pipe lengths.

04 What floor requirements does the ST-45LY need?

At approximately 12,700 kg (28,000 lb), the ST-45LY requires a minimum 12-inch reinforced concrete slab with rebar. Consult your Haas HFO dealer for specific foundation drawings. Professional rigging with a crane rated for the machine weight is essential.