Okuma LU45II

$280,000 - $420,000 Updated 2026-03-13

Key Specifications

Max Spindle

2,500 RPM

Rapid Traverse

18 m/min X, 20 m/min Z

Spindle Power

37/30 kW (50/40 hp)

Max Turn Length

750 [1,000; 2,000; 3,000]

Accuracy

±0.006 mm

Repeatability

±0.004 mm

Overview

The Okuma LU45II is a heavy-duty twin-turret horizontal turning center based on the LB45 platform, adding a second turret for simultaneous cutting capability on the largest single-spindle workpieces in Okuma's turning lineup below the LU7000 EX. With a maximum turning diameter of 670 mm (26.4 in) and 890 mm (35 in) swing over bed, the LU45II targets heavy industry applications where large parts require both substantial spindle power and twin-turret productivity.

The main spindle delivers 37/30 kW (50/40 hp) at up to 2,500 RPM through an A2-15 spindle nose. The 15-inch or 18-inch hydraulic chuck clamps heavy forgings, castings, and large bar stock up to 118 mm (4.6 in) diameter. Bed length options extend from 1,000 mm (39.4 in) to 3,000 mm (118.1 in) for extended shaft and pipe work.

The upper turret carries 12 stations with optional driven tools, while the lower turret adds 8-10 stations for simultaneous OD operations. At approximately 14,000 kg (30,865 lb), the LU45II has the mass for vibration-free simultaneous cutting on large, heavy workpieces. Box way construction on both axes provides the rigidity required for aggressive stock removal from both turrets at once.

Okuma's OSP-P300L control manages turret synchronization with Collision Avoidance System protection. Thermo-Friendly Concept is critical at this machine size, where even small percentage thermal growth translates to significant dimensional errors. Rapid traverse rates are 18 m/min on X and 20 m/min on Z.

The LU45II competes with heavy-duty twin-turret lathes from Hankook, Tacchi, and DMG Mori in the heavy industrial segment. It fills the gap between the LU4000 EX (500 mm turning diameter) and the massive LU7000 EX (900 mm turning diameter), providing twin-turret productivity on workpieces in the 500-670 mm diameter range. Specs sourced from Okuma published data.

Full Specifications

Parameter	Value
Max Turning Diameter	650
Max Turning Length	750 [1,000; 2,000; 3,000]
Swing Over Bed	890 mm (35 in)
Max Spindle Speed	2,500 RPM
Spindle Motor Power	37/30 kW (50/40 hp)
Spindle Nose	A2-15
Chuck Size	15 in (381 mm) / 18 in (457 mm)
Bar Capacity	118 mm (4.6 in)
Upper Turret Stations	12
Lower Turret Stations	8-10
X Axis Travel	340 mm (13.4 in)
Z Axis Travel	1,050 mm (41.3 in)
Rapid Traverse Rate	18 m/min X, 20 m/min Z
Positioning Accuracy	±0.006 mm
Repeatability	±0.004 mm
Machine Weight	14,000 kg (30,865 lb)
CNC Control	Okuma OSP-P300L
Speed Range	12~2,800 [12~2,400]
Standard Power	37/30
Rapid Traverse X Z	15 / 20
Rapid Traverse C	100
Okuma Global Repair Center	Charlotte, North Carolina
Inches	Metric
Spindle Nose Type	A2-11

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

Strengths & Limitations

Strengths

670 mm turning diameter with twin turrets provides simultaneous cutting on workpieces too large for the LU4000 EX
37 kW (50 hp) spindle delivers massive torque for heavy stock removal on large forgings and castings
14,000 kg mass ensures vibration-free cutting during simultaneous operations from both turrets
118 mm bar capacity handles the largest standard production bar stock sizes
Bed lengths up to 3,000 mm accommodate long shaft and pipe work with tailstock support
Proven LB45 platform with decades of heavy-duty production track record

Limitations

Starting at $280K, the investment is substantial and requires consistent high-volume production to justify
2,500 RPM max spindle speed severely limits high-speed finishing on smaller diameters
14,000 kg weight requires reinforced foundations, heavy rigging equipment, and significant floor space
Rapids at 18/20 m/min increase non-cutting time compared to smaller machines
The LU45II platform is older than the LU4000 EX; evaluate both before purchasing

Best For

Oil and gas manufacturers turning large-diameter drill collars, pipe, and pressure vessel components with complex profiles Power generation shops needing twin-turret productivity on large turbine casings and generator components Heavy equipment manufacturers producing large hydraulic cylinders and mining equipment components Shipbuilding operations turning propeller shafts and large bearing housings Shops running LB45III single-turret lathes that need cycle time reductions on complex parts

Frequently Asked Questions

01 What does an Okuma LU45II cost?

New LU45II machines run $280,000-$420,000 depending on bed length and configuration. Standard bed configurations start around $280,000-$330,000. Extended bed setups with full options reach $370,000-$420,000. Used LU45 and LU45II machines from 2008-2016 sell for $100,000-$200,000.

02 How does the LU45II compare to the LU4000 EX?

The LU45II has a larger turning diameter (670 vs 500 mm), more swing (890 vs 710 mm), larger bar capacity (118 vs 104 mm), and more mass (14,000 vs 9,500 kg). The LU4000 EX has higher spindle speed (3,500 vs 2,500 RPM), more power (40 vs 50 hp—note the LU45II actually has more power), and newer-generation EX features. Choose based on workpiece size requirements.

03 What foundation does the LU45II require?

At 14,000 kg, the LU45II requires a reinforced concrete foundation typically 400-600 mm thick, engineered for local soil conditions. Foundation costs typically run $25,000-$45,000. Rigging requires a 30+ ton crane. Plan 2-3 months for foundation preparation before machine delivery.

04 Can the LU45II handle hard turning?

Yes. The combination of 14,000 kg mass, box way construction, and 50 hp spindle makes the LU45II capable of turning hardened steel (HRC 45-55) with CBN inserts. The twin-turret architecture allows rough and finish cutting simultaneously, further improving productivity on hard turning operations.