Okuma MCV-AII
Key Specifications
Z Travel
Max Spindle
Tool Capacity
Spindle Power
column width
table work surface
Overview
The Okuma MCV-AII is a large-capacity double-column machining center designed for high-precision milling of oversized workpieces in mold and die, aerospace, and heavy industrial applications. Available in multiple column width configurations of 1,650 mm and 2,050 mm with table surfaces ranging from 1,200 x 1,800 mm up to 1,500 x 5,000 mm, the MCV-AII provides a versatile platform for shops needing large work envelopes with double-column rigidity.
The standard spindle runs at 4,000 RPM with optional configurations at 6,000 and 10,000 RPM, powered by a 22 kW (30 hp) motor at 30-minute rating and 18.5 kW (25 hp) continuous. The quill-type spindle with a 210 mm diameter provides excellent rigidity for heavy cuts. Z-axis travel is 450 mm with rapid traverse at 20 m/min on X and Y axes and maximum cutting feed of 10,000 mm/min. The direct gearless spindle drive eliminates gear noise and vibration for better surface finish.
Tool storage holds 24 tools standard. The MCV-AII features a spindle cooler as standard equipment, maintaining thermal stability during extended cutting cycles. Machine dimensions range from 4,935 x 6,260 x 4,375 mm to 5,335 x 12,920 x 4,585 mm depending on table length. The machine runs on Okuma's OSP control with Thermo-Friendly Concept, Anti-Crash System, and intelligent machining technologies.
The MCV-AII competes with the SNK RB series, Toshiba MPF series, and Kuraki KBT-13 in the large double-column VMC segment. Okuma's key differentiator is the combination of quill spindle rigidity and the Thermo-Friendly Concept for long-cycle thermal stability. New MCV-AII machines price in the $600,000 to $1,200,000 range depending on table configuration. Specs sourced from Okuma Corporation published data.
Full Specifications
| Parameter | Value |
|---|---|
| Column Width | 1,650 mm / 2,050 mm (65.0 / 80.7 in) |
| Table Work Surface | 1,200 x 1,800 mm to 1,500 x 5,000 mm |
| Z-Axis Travel | 450 mm (17.7 in) |
| Max Spindle Speed | 4,000 RPM (6,000 / 10,000 RPM optional) |
| Spindle Motor Power | 22/18.5 [22/15] |
| Spindle Type | Quill type, ø210 mm diameter |
| Spindle Drive | Direct gearless drive |
| Rapid Traverse Xy | 20 m/min (787 ipm) |
| Max Cutting Feed | 10,000 mm/min (394 ipm) |
| Tool Capacity | 24 tools |
| Spindle Cooling | Spindle cooler standard equipped |
| CNC Control | Okuma OSP-P500M |
| Machine Dimensions | 4,935 x 6,260 x 4,375 mm to 5,335 x 12,920 x 4,585 mm (W x D x H) |
| Width Between Columns | 1,650 [2,050] |
| Table Travel | 2,000 [3,000; 4,000; 5,000] |
| Spindle Range | 4,000 [6,000] |
| Rapid Traverse Rate X Y Z | 20 / 10 |
| Okuma Global Repair Center | Charlotte, North Carolina |
| Inches | Metric |
| Magazine Capacity | 24 [50 72, 100] |
Specifications sourced from okuma.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 210 mm diameter quill spindle provides exceptional rigidity for heavy cuts in steel and cast iron, outperforming cartridge-type spindles in large-part roughing applications
- Table configurations from 1,200 x 1,800 mm up to 1,500 x 5,000 mm accommodate a very wide range of workpiece sizes on a single machine platform
- Direct gearless spindle drive eliminates gear noise and vibration for improved surface finish quality during precision finishing passes
- Standard spindle cooler maintains thermal stability during extended machining cycles without optional equipment purchases
- Thermo-Friendly Concept provides dimensional accuracy across long machining cycles typical of large mold and die work
- Multiple spindle speed options (4K, 6K, 10K RPM) allow shops to configure the machine for their primary material and application
Limitations
- 4,000 RPM standard spindle speed is very conservative — shops machining aluminum or requiring high surface speeds will need the optional 10,000 RPM upgrade
- 24-tool magazine is limited for complex multi-operation work, requiring tool changes between operations on sophisticated parts
- 450 mm Z-axis travel constrains workpiece height compared to some competing double-column machines offering 600+ mm
- 20 m/min rapid traverse is slow by modern standards, adding non-cutting time on large parts with many positioning moves
Best For
Frequently Asked Questions
01
New MCV-AII machines typically price between $600,000 and $1,200,000 depending on table size configuration, column width, and spindle selection. The 1,500 x 5,000 mm table version with 10,000 RPM spindle sits at the high end. Used MCV-AII machines from 2008-2018 trade between $200,000 and $500,000 depending on configuration, hours, and condition.
02
The 4,000 RPM standard is appropriate for heavy roughing in steel and cast iron where torque matters more than speed. The 6,000 RPM option covers general-purpose work across ferrous materials. The 10,000 RPM option is recommended for shops cutting aluminum or requiring higher surface speeds for finishing. Most mold and die shops opt for the 6,000 or 10,000 RPM configuration for flexibility across roughing and finishing.
03
The quill spindle on the MCV-AII uses a 210 mm diameter quill that extends for Z-axis motion, providing rigidity closer to a boring mill than a typical VMC. Cartridge-type spindles are lighter and faster but deflect more under heavy cutting loads. The quill design makes the MCV-AII particularly strong for heavy roughing and boring operations in large steel and cast iron parts.
04
Yes. The direct gearless spindle drive eliminates gear-induced vibration, and the standard spindle cooler maintains thermal stability for consistent finishing. The Thermo-Friendly Concept compensates for thermal growth during long cycles. However, the 4,000 RPM standard speed limits achievable surface speeds — shops focused on finishing should specify the 10,000 RPM spindle option.
Videos
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