Okuma LAW-F II

$350,000 - $500,000 Updated 2026-03-13

Key Specifications

Rapid Traverse

Max Turn Length

500 mm (19.7 in) per spindle

max turning diameter

Ø620

main spindle speed

4,000 RPM

main spindle power

22/18.5 kW (30/25 hp)

main spindle torque

350 Nm (258 ft-lb)

Overview

The Okuma LAW-F II is a twin-spindle opposed-spindle horizontal CNC lathe that scales up from the LAW-2S to handle larger parts with more spindle power. The F II designation indicates the second generation of the full-size LAW platform, with improvements in rigidity, thermal management, and control capability. With a maximum turning diameter of 350 mm (13.8 in) and maximum turning length of 500 mm (19.7 in) per spindle, it handles the mid-size shaft and fitting work common in automotive drivetrain, hydraulic, and industrial component manufacturing.

The main spindle delivers 22/18.5 kW (30/25 hp) at up to 4,000 RPM with 350 Nm (258 ft-lb) of torque through an A2-8 spindle nose. The sub-spindle delivers 15/11 kW (20/15 hp) at 5,000 RPM with 200 Nm (148 ft-lb). Bar capacity is 65 mm (2.56 in) through the main spindle, covering the broad range of bar stock sizes used in mid-size production turning. The 10-inch main chuck and 8-inch sub-spindle chuck handle both bar-fed and chucked work.

The main turret carries 12 stations in VDI 40 format and the sub-turret carries 12 stations in VDI 30. Both turrets support driven tools with optional Y-axis on the main turret for off-center milling. X-axis travel is 230 mm (9.1 in) per turret with Z-axis at 550 mm (21.7 in) for the main and 500 mm (19.7 in) for the sub-spindle. Rapid traverse is 30 m/min.

The LAW-F II's larger main spindle and VDI 40 turret provide significantly more cutting capability than the LAW-2S for aggressive roughing on larger parts. Okuma's Thermo-Friendly Concept and Collision Avoidance System are standard. The OSP-P300L control manages the complex dual-spindle, dual-turret configuration.

The LAW-F II competes with the Mazak Quick Turn 350MSY, DMG Mori CLX 550, and Doosan Puma 3100LSYB. Pricing runs $350,000-$500,000 new. Machine weight is approximately 9,500 kg (20,944 lb).

Full Specifications

Parameter	Value
Max Turning Diameter	Ø620
Max Turning Length	500 mm (19.7 in) per spindle
Main Spindle Speed	4,000 RPM
Main Spindle Power	22/18.5 kW (30/25 hp)
Main Spindle Torque	350 Nm (258 ft-lb)
Sub Spindle Speed	5,000 RPM
Sub Spindle Power	15/11 kW (20/15 hp)
Main Spindle Nose	A2-8
Main Chuck Size	254 mm (10 in)
Sub Chuck Size	203 mm (8 in)
Bar Capacity	65 mm (2.56 in)
Main Turret	VDI 40, 12-station
Sub Turret	VDI 30, 12-station
X Axis Travel	230 mm (9.1 in) per turret
Z Axis Travel	550 mm (main) / 500 mm (sub)
Rapid Traverse Rate	20
Machine Weight	9,500 kg (20,944 lb)
CNC Control	Okuma OSP-P300L
Speed Range	200-3,000
Standard Power	37/30
Okuma Global Repair Center	Charlotte, North Carolina
Inches	Metric
Spindle Nose Type	JIS A2-8

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

Strengths & Limitations

Strengths

Larger 350 mm turning diameter and 65 mm bar capacity handle mid-size parts that exceed the LAW-2S envelope
VDI 40 main turret provides the rigidity for aggressive roughing on larger-diameter steel and alloy parts
12 stations on both turrets provide ample tool capacity for complex complete-part machining without manual tool changes
Optional Y-axis on the main turret enables off-center milling for features like flats, keyways, and cross-holes
Opposed-spindle design produces finished parts in a single cycle, eliminating OP10/OP20 transfer between machines
Second-generation design improvements in rigidity and thermal management over the original LAW-F platform

Limitations

Sub-spindle at 15 kW is less powerful than the 22 kW main spindle, which can limit OP20 roughing capability on harder materials
350 mm turning diameter is still mid-range; shops with larger parts need dedicated full-size turning centers
Capital cost of $350,000-$500,000 requires consistent dual-spindle utilization to justify versus two single-spindle machines
OSP control with dual spindles and dual turrets creates complex programming that demands experienced operators
9,500 kg weight and dual-spindle footprint are larger than single-spindle alternatives in the same diameter class

Best For

Automotive drivetrain manufacturers producing shafts, fittings, and housing components requiring complete front-and-back machining Hydraulic component manufacturers turning spool bodies, valve stems, and fitting housings with features on both ends Production shops consolidating separate OP10 and OP20 lathes into a single dual-spindle machine for throughput improvement Shops running 65 mm bar stock where bar feeder plus opposed spindles creates a continuous complete-part production cycle Medium-to-high volume production of mid-size shaft parts where single-cycle completion reduces WIP and improves quality

Frequently Asked Questions

01 What does an Okuma LAW-F II cost?

A new LAW-F II typically runs $350,000-$500,000 depending on Y-axis option, driven tool packages, bar feeder, and parts handling. The dual-spindle dual-turret architecture provides complete-part capability that justifies the premium for shops running sufficient volume.

02 How does the LAW-F II compare to the LAW-2S?

The LAW-F II has a larger 350 mm turning diameter versus 260 mm, more powerful main spindle (22 kW vs 18.5 kW), VDI 40 main turret versus VDI 30, 65 mm bar capacity versus 51 mm, and 12-station sub-turret versus 8-station. The LAW-F II handles larger parts with more tool capacity.

03 Does the LAW-F II have Y-axis capability?

Y-axis is available as an option on the main turret, enabling off-center milling for features like flats, keyways, and hex shapes. The Y-axis combined with C-axis and driven tools provides significant mill-turn capability without needing a dedicated multitasking machine.

04 Can the LAW-F II handle bar stock and chucked parts?

Yes, the 65 mm bar capacity with bar feeder integration handles bar-fed production, while the 10-inch main chuck accommodates chucked parts. The versatility to switch between bar and chuck work makes the LAW-F II suitable for both dedicated production and mixed-part job shop environments.

05 What is the part transfer process between spindles?

After OP10 machining, the sub-spindle advances on the Z2 axis, grips the part from the main spindle, and retracts for OP20 machining. The transfer is programmable for timing, grip position, and synchronization. The cutoff operation can occur before or during the transfer depending on part geometry.