Okuma MB-66V

$155,000 - $200,000 Updated 2026-03-13

Key Specifications

X Travel

1,300 mm (51.2 in)

Y Travel

660 mm (26.0 in)

Z Travel

560 mm (22.0 in)

Max Spindle

min⁻¹ (rpm)

Spindle Taper

BT 40

Tool Capacity

20 (standard); 32, 48, or 98 optional

Overview

The Okuma MB-66V is the large-envelope model in Okuma's premium MB-V box-way vertical machining center lineup, offering 1,300 x 660 x 560 mm (51.2 x 26.0 x 22.0 in) of travel. This is where Okuma's hand-scraped box-way construction really earns its keep: the expanded work envelope handles large mold bases, die plates, and structural components that demand both size and surface finish quality.

The spindle runs 8,000 RPM standard with 11/7.5 kW (15/10 hp) through a BT 40 taper, with the same optional high-speed configurations as the smaller MB models reaching up to 35,000 RPM. The optional 22/18.5 kW (30/25 hp) motor provides the torque for heavy roughing passes in large steel workpieces that take advantage of the MB-66V's full travel envelope.

With a 1,530 x 660 mm (60.2 x 26.0 in) table and 1,000 kg (2,205 lb) load capacity, the MB-66V handles substantial workpieces. The hand-scraped box ways on all three axes become increasingly important at this machine size because larger cuts generate proportionally more vibration, and the box-way damping prevents the chatter that would degrade surface finish on long finishing passes across large surfaces.

The 560 mm (22.0 in) Z-travel provides meaningful depth compared to the 460 mm on the smaller MB-46V and MB-56V models. This extra Z reach is critical for deep mold cavities, tall fixture setups, and parts that combine horizontal and vertical features.

Okuma's Thermo-Friendly Concept is essential on a machine this size, where thermal growth across the longer axes can cause significant dimensional variation. The system compensates in real time, maintaining tight tolerances from the first part of the morning through continuous afternoon production.

New MB-66V machines run $155,000-$200,000. At this size and price point, the MB-66V competes with the Mazak VCN-700, Doosan DNM 650, and Hyundai Wia KF6700. The box-way construction differentiates it from all roller-guide competitors.

Full Specifications

Parameter	Value
X-Axis Travel	1,300 mm (51.2 in)
Y-Axis Travel	660 mm (26.0 in)
Z-Axis Travel	560 mm (22.0 in)
Max Spindle Speed	min⁻¹ (rpm)
Spindle Taper	BT 40
Spindle Motor Power	11/7.5 (15/10)
Tool Capacity	20 (standard); 32, 48, or 98 optional
Table Size	1,530 x 660 (60.24 x 25.98)
Max Table Load	1,000 kg (2,205 lb)
Rapid Traverse Rate	40 /32 (1575/1260)
Positioning Accuracy	±0.005 mm
Repeatability	±0.003 mm
Machine Weight	8,200 kg (18,078 lb)
CNC Control	OSP-P300A
Guide Type	Box ways (all axes, hand-scraped)
Max Machining Volume	1500 x 660 x 660 (59.06 x 25.98 x 25.98
Okuma Global Repair Center	Charlotte, North Carolina
Inches	Metric
Spindle Speed	50-8,000, [50-15,000, 50-20,000, 50-25,000, 50-35,000 opt]
Magazine Capacity	20 [32/48 opt]

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

Strengths & Limitations

Strengths

1,300 x 660 x 560 mm travel handles large mold bases and die plates that smaller VMCs cannot accommodate
Hand-scraped box ways on all axes provide exceptional vibration damping across the large work envelope
1,000 kg table load supports heavy mold bases, large fixtures, and multi-part setups
560 mm Z-travel gives 100 mm more depth than the MB-46V and MB-56V for deep cavity work
Thermo-Friendly Concept is critical on this larger machine where thermal growth is magnified
Full range of spindle options from 8K to 35K RPM covers all material and application requirements
8,200 kg machine weight provides mass-based vibration isolation for heavy cutting operations

Limitations

Starting at $155K, the premium over roller-guide alternatives is significant at this size
BT 40 taper may be undersized for the heavy cuts this large machine is capable of; consider BT 50 alternatives
Box-way rapids at 32 m/min extend non-cutting time on large parts with long tool path distances
Standard 20-tool magazine is minimal for the complex multi-operation parts this machine targets
Large footprint and 8,200 kg weight require substantial floor space and foundation preparation

Best For

Mold and die shops producing large injection mold bases requiring box-way surface finish quality Stamping die manufacturers machining large die plates with heavy roughing and fine finishing requirements Aerospace manufacturers producing large structural brackets and housings in aluminum and titanium General engineering shops working with large castings and forgings that need precision finishing Production facilities running large parts that need consistent accuracy across extended machining cycles

Frequently Asked Questions

01 What does an Okuma MB-66V cost new?

New MB-66V machines run $155,000-$200,000. High-speed spindles, 48+ tool magazines, APC systems, and through-spindle coolant push toward the upper range. Used MB-66V units from 2014-2019 sell for $85,000-$120,000.

02 How does the MB-66V compare to the MB-56V?

The MB-66V adds 250 mm more X-travel (1,300 vs 1,050 mm), 100 mm more Y (660 vs 560 mm), 100 mm more Z (560 vs 460 mm), and 200 kg more table load. The larger table (1,530x660 vs 1,300x560 mm) handles bigger workpieces. At $155-200K vs $130-170K, the price premium is moderate for significantly more capability.

03 Is the MB-66V too much machine for a job shop?

Not if your work regularly includes parts over 500 mm in any dimension or heavy castings. Many job shops appreciate the MB-66V's versatility: small parts run fine on a large table, but you can't run large parts on a small machine. The box-way construction holds its accuracy for years, making it a long-term investment.

04 Can the MB-66V handle large mold bases?

Yes, that's one of its primary applications. The 1,530 x 660 mm table with 1,000 kg capacity handles most medium-to-large mold bases. The box-way construction provides the surface finish quality mold bases demand. For mold bases exceeding 1,300 mm, consider the MB-80V or the MILLAC 761V II.

05 What foundation does the MB-66V need?

At 8,200 kg, the MB-66V needs a minimum 200 mm (8 in) thick reinforced concrete slab. Okuma recommends an isolated foundation pad to prevent vibration transfer from neighboring equipment. Plan for approximately 3.5 x 3.5 meters of floor space including service access.