Okuma MCR-A5CII
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
Overview
The Okuma MCR-A5CII is a 5-axis capable double-column machining center from Okuma's MCR series, designed for complex aerospace and mold components that require simultaneous 5-axis contouring with the rigidity of a double-column frame. With travel ranges starting at 2,050 x 1,600 x 750 mm (80.7 x 63.0 x 29.5 in), it delivers precise 5-axis work on large workpieces that single-column machines cannot handle.
The A/C axis head provides continuous 5-axis contouring capability, enabling complex sculptured surface machining on large aerospace parts, automotive dies, and complex mold geometries. The spindle delivers 6,000 RPM standard with 22/18.5 kW (30/25 hp) through a No. 50 (BT 50) taper. High-speed options reach 10,000 and 15,000 RPM for finishing operations on aluminum and non-ferrous materials.
Double-column construction provides inherent rigidity that cantilevered C-frame machines cannot match at this scale. The crossrail-mounted spindle head travels on box ways, maintaining constant rigidity regardless of Y-axis position. This eliminates the column deflection that plagues C-frame machines at maximum Y-axis extension.
The table configurations range from 1,500 x 2,000 mm to larger custom sizes, with load capacities up to 5,000 kg (11,023 lb). The 50-tool ATC (expandable to 80, 100, 120, 180, or 240 tools) handles the complex multi-tool programs that 5-axis aerospace and mold work demands.
Okuma's OSP-P500 control provides the full 5-axis simultaneous contouring package with NURBS interpolation, tool center point management, and the Super-NURBS function for smooth surface generation on complex 3D geometry. The Collision Avoidance System is essential for 5-axis work where complex tool orientations increase crash risk.
New MCR-A5CII machines start at $600,000 and can exceed $1,000,000 with full 5-axis configuration and large tool magazines. Competitors include the DMG Mori DMU 210 P, Makino T1, and Mazak VTC-800/20SR.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 2,050 mm (80.7 in) and larger configurations |
| Y-Axis Travel | 1,600 mm (63.0 in) |
| Z-Axis Travel | 750 mm (29.5 in) |
| Max Spindle Speed | 6,000 RPM (standard); 10,000 / 15,000 RPM optional |
| Spindle Taper | No. 50 (BT 50) |
| Spindle Motor Power | VAC 26/22 (30 min/cont) [VAC 30/22 (30 min/cont)] |
| Tool Capacity | 50 (standard); 80, 100, 120, 180, or 240 optional |
| Table Size | 1,500 x 2,000 mm (59.1 x 78.7 in) and larger |
| Max Table Load | 5,000 kg (11,023 lb) |
| Rapid Traverse Rate | m/min |
| Five Axis | A/C axis continuous contouring head |
| Machine Weight | 30,000 kg (66,139 lb) |
| CNC Control | OSP-P500 |
| Guide Type | Box ways (crossrail and columns) |
| Width Between Columns | 2,150 - 3,650 |
| Table Travel | 3,050 - 12,050 |
| Spindle Range | 4,000 [6,000 & 10,000] |
| Okuma Global Repair Center | Charlotte, North Carolina |
| Inches | Metric |
| Rapid Traverse Rate | X: 30, Y: 30, Z: 20 |
| Magazine Capacity | 50 [OPT: 80, 100, 120, 180] |
Specifications sourced from okuma.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 5-axis simultaneous contouring on a double-column frame provides rigidity unmatched by C-frame 5-axis machines
- Double-column construction eliminates column deflection at maximum Y-axis extension
- Up to 240-tool magazine handles complex multi-operation aerospace and mold programs
- 5,000 kg table load supports large aerospace structures and heavy mold/die workpieces
- OSP-P500 control with Super-NURBS produces smooth surfaces on complex 3D geometry
- Collision Avoidance System is critical for 5-axis work with complex tool orientations
- Configurable travel ranges accommodate custom workpiece requirements
Limitations
- Starting at $600K, the investment requires sustained high-value 5-axis work to justify
- Standard 6,000 RPM spindle is modest for high-speed aluminum aerospace work
- 30,000+ kg weight requires engineered foundation and heavy crane for installation
- Double-column design restricts operator access compared to C-frame or gantry machines
- OSP-P500 control requires operators with 5-axis programming experience
Best For
Frequently Asked Questions
01
MCR-A5CII machines start around $600,000 for base configurations and can exceed $1,000,000 with full 5-axis setup, large tool magazines (180+ tools), and high-speed spindle options. These are typically quoted as custom configurations based on specific application requirements.
02
Double-column construction provides constant rigidity regardless of Y-axis position, which is critical for 5-axis work where cutting forces change direction constantly. C-frame machines deflect more at full Y-extension, causing positional errors during 5-axis contouring. The double-column frame eliminates this issue.
03
Both target the large 5-axis segment. The MCR-A5CII uses a double-column design with crossrail A/C head, while the DMU 210 P uses a gantry design. The Okuma's box-way construction provides more damping for heavy cuts. The DMG Mori's Siemens or Heidenhain control may be preferred in European and aerospace markets. Both are excellent machines at similar price points.
04
Aerospace structural components, complex automotive dies, large turbine parts, and complex mold cavities that require 5-axis simultaneous contouring at this scale. The machine justifies itself when it replaces multiple setups on smaller machines, reducing lead time on high-value parts from weeks to days.
Videos
NCMT Ltd
Okuma Europe GmbH
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Okuma America Corporation
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Community Discussions
Community discussion — MCR A5CII machine - cnczone.com
Community discussion — MCR A5CII machine - CNCzone
Troubleshooting and problem-solving — Newbie okuma Stroke End Over - CNCzone
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