Okuma MILLAC 761V II

$210,000 - $280,000 Updated 2026-03-13

Key Specifications

X Travel

1,540 mm (60.6 in)

Y Travel

760 mm (29.9 in)

Z Travel

660 mm (26.0 in)

Max Spindle

min⁻¹

Spindle Taper

No. 50 (BT 50)

Tool Capacity

36 (standard); 54 optional

Overview

The Okuma MILLAC 761V II is a large-frame, heavy-duty vertical machining center from Okuma's MILLAC V II mold and die series. With 1,540 x 760 x 660 mm (60.6 x 29.9 x 26.0 in) of travel, it handles the large mold bases and die plates that smaller machines simply cannot accommodate.

The spindle delivers 4,000 RPM standard with 18.5/15 kW (25/20 hp) through a No. 50 (BT 50) taper. Options extend to 6,000, 10,000, 12,000, and 15,000 RPM with an optional 22/18.5 kW (30/25 hp) motor. The BT 50 taper is standard at this size, providing the clamping force needed for large-diameter face mills during roughing passes on large mold bases.

The 1,800 x 720 mm (70.9 x 28.3 in) table with 36-tool ATC (expandable to 54) handles substantial workpieces. At this size, heavy-duty box-way construction becomes essential: large mold bases weighing 1,500+ kg generate significant cutting forces during roughing, and box ways provide the vibration damping that keeps tools in the cut and surfaces smooth.

The 660 mm (26.0 in) Z-travel provides depth for deep cavity mold work. Combined with the 760 mm Y-axis, the MILLAC 761V II can reach into mold cavities that would require a double-column machine on smaller platforms. The thermally symmetrical headstock design minimizes positional drift during the multi-hour cycles typical of large mold machining.

Okuma's OSP-P300A control with advanced look-ahead contouring processes complex 3D surfaces smoothly, critical when finishing passes span the full 1,540 mm X-travel on a large mold base. The Thermo-Friendly Concept manages thermal growth across the substantial machine structure.

New MILLAC 761V II machines run $210,000-$280,000. At this size, competitors include the Makino V77, Mazak VTC-800, and the MB-80V from Okuma's own lineup.

Full Specifications

Parameter	Value
X-Axis Travel	1,540 mm (60.6 in)
Y-Axis Travel	760 mm (29.9 in)
Z-Axis Travel	660 mm (26.0 in)
Max Spindle Speed	min⁻¹
Spindle Taper	No. 50 (BT 50)
Spindle Motor Power	18.5/15 [26/18.5]
Tool Capacity	36 (standard); 54 optional
Table Size	mm
Max Table Load	1,500 kg (3,307 lb)
Rapid Traverse Rate	16
Positioning Accuracy	±0.005 mm
Repeatability	±0.003 mm
Machine Weight	13,500 kg (29,762 lb)
CNC Control	OSP-P300A
Guide Type	Box ways (heavy-duty, all axes)
Travel X Y Z	1,540 x 760 x 660
Max Load	2,000
Okuma Global Repair Center	Charlotte, North Carolina
Inches	Metric
Table Dimensions	1,800 x 720
Spindle Speed	20~4,000 [30~6,000; 50~12,000; 50~15,000]

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

Strengths & Limitations

Strengths

1,540 x 760 x 660 mm travel handles large mold bases that most VMCs cannot accommodate
BT 50 taper provides authority for large face mills and heavy roughing on mold steel
1,500 kg table load supports large mold bases without concern about overloading
Heavy-duty box-way construction provides exceptional vibration damping for finish-quality surfaces
Thermally symmetrical headstock minimizes drift during multi-hour large mold machining cycles
660 mm Z-travel accesses deep cavities without extended tool holders
13,500 kg machine mass absorbs vibration from heavy interrupted cuts on large surfaces

Limitations

Starting at $210K, the investment is substantial and requires a steady mold/die workload to justify
Standard 4,000 RPM spindle is slow; most shops will need the 10K+ RPM upgrade for finishing
13,500 kg weight requires significant foundation preparation and crane access for installation
Box-way rapids at 24 m/min extend non-cutting time on large parts with many feature positions
Large footprint limits placement options in smaller shops

Best For

Large mold shops producing automotive-sized injection mold bases and cavities Stamping die manufacturers machining large progressive and transfer dies Shops replacing aging bridge-type or double-column machines with a more compact VMC solution Aerospace manufacturers machining large structural components requiring precision surface finish Energy sector manufacturers producing large turbine and pump housing components

Frequently Asked Questions

01 What does an Okuma MILLAC 761V II cost new?

New MILLAC 761V II machines run $210,000-$280,000. High-speed spindle options and the 54-tool magazine add to the base price. Used units from 2012-2017 sell for $120,000-$170,000.

02 How does the MILLAC 761V II compare to the MB-80V?

Similar size class but different optimization. The MILLAC 761V II has wider Y-travel (760 vs 800 mm on the MB-80V) and a thermally symmetrical headstock design optimized for mold finishing. The MB-80V has slightly more X-travel (1,600 vs 1,540 mm). Both use box ways and BT 50. The MILLAC is the choice for dedicated mold work; the MB-80V for general-purpose large VMC work.

03 What spindle speed is best for large mold work?

The 10,000 RPM option is the most popular for large mold work. It provides enough speed for semi-finishing and finishing in P20 and H13 while retaining good torque for roughing. The 15K option is for shops doing significant high-speed finishing. The standard 4K RPM is only suitable for very heavy roughing operations.

04 What foundation does the MILLAC 761V II require?

At 13,500 kg, plan for a minimum 300 mm (12 in) reinforced concrete slab on stable sub-grade. An isolated foundation pad is recommended. Floor space needs are approximately 5.0 x 4.0 meters including service access. Check with Okuma's installation team for site-specific requirements.