Okuma MA-650V
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
Overview
The Okuma MA-650V is the larger model in Okuma's production-grade MA-V series of vertical machining centers, stepping up from the MA-550V with expanded travel at 1,600 x 660 x 660 mm (63.0 x 26.0 x 26.0 in). This is Okuma's answer for shops that need serious BT 50 production capability with a large work envelope before stepping up to double-column machines.
The spindle delivers 6,000 RPM standard with 15/11 kW (20/15 hp) through a No. 50 (BT 50) taper. The optional 22/15 kW (30/20 hp) motor and 12,000 RPM high-speed configuration provide flexibility for shops running a mix of heavy roughing and higher-speed finishing operations. The BT 50 taper gives the MA-650V authority for large face mills and heavy boring operations that BT 40 machines cannot match.
Roller guide construction on all axes with pre-tensioned ball screws and core cooling delivers fast axis movement for production cycle times. The 1,600 mm X-travel at 40 m/min rapid traverse covers large workpieces quickly, minimizing non-cutting time on parts with widely spaced features.
The 1,600 x 660 mm (63.0 x 26.0 in) table with 1,200 kg (2,646 lb) load capacity accommodates large castings, forgings, and multi-part fixture plates. The 660 mm (26.0 in) Z-travel provides substantial depth capability that the MA-550V's 560 mm Z cannot match.
The 32-tool ATC (expandable to 48 or 60) with arm-type changer keeps tool changes fast. Okuma's Thermo-Friendly Concept manages thermal stability across the large machine structure, and the OSP-P300A control integrates tool life management, bar code reading, and production tracking features.
New MA-650V machines run $175,000-$235,000. The MA-650V targets shops machining large production parts that need BT 50 rigidity: automotive structural castings, heavy equipment components, and energy sector housings. Competitors include the Mazak VTC-800/30SR, Doosan DNM 750, and Hyundai Wia KF7600.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 1,600 mm (63.0 in) |
| Y-Axis Travel | 660 mm (26.0 in) |
| Z-Axis Travel | 660 mm (26.0 in) |
| Max Spindle Speed | min⁻¹ |
| Spindle Taper | No. 50 (BT 50) |
| Spindle Motor Power | kW |
| Tool Capacity | 32 (standard); 48 or 60 optional |
| Table Size | 1,530 x 660 |
| Max Table Load | 1,200 kg (2,646 lb) |
| Rapid Traverse Rate | 40 m/min (X/Y); 32 m/min (Z) |
| Positioning Accuracy | ±0.005 mm |
| Repeatability | ±0.003 mm |
| Machine Weight | 12,000 kg (26,455 lb) |
| CNC Control | OSP-P300A |
| Guide Type | Linear roller guides (all axes) |
| Max Machining Volume | 1,530 x 660 x 610 |
| Rapid Traverse X Y Z | 40 / 40 / 30 |
| Okuma Global Repair Center | Charlotte, North Carolina |
| Inches | Metric |
| Spindle Speed | 50-6,000 [50-12,000, 50-25,000] |
| Spindle Motor Power | 22/15/11 |
| Magazine Capacity | 32 [opt. 48] |
Specifications sourced from okuma.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 1,600 x 660 x 660 mm travel provides a large production-grade work envelope with BT 50 authority
- BT 50 taper handles large face mills and heavy boring bars that BT 40 machines cannot support
- 1,200 kg table load accommodates large castings, forgings, and heavy multi-part fixture setups
- 660 mm Z-travel provides meaningful depth for tall parts and deep feature machining
- Roller guides with ball screw core cooling deliver fast rapids and thermal stability for production
- 32-tool standard ATC expandable to 60 tools covers production complexity requirements
- 12,000 kg machine mass provides excellent vibration isolation during heavy roughing operations
Limitations
- Standard 6,000 RPM spindle limits aluminum cutting speed; 12K RPM upgrade needed for mixed materials
- Starting at $175K, it's a major investment requiring high-volume or high-value work to justify
- 12,000 kg weight demands serious foundation work and floor space planning
- BT 50 tooling investment is higher than BT 40, affecting total shop tooling costs
- Roller guides trade some vibration damping versus box-way machines for heavy interrupted cuts
Best For
Frequently Asked Questions
01
New MA-650V machines run $175,000-$235,000 depending on spindle configuration and options. The 12K RPM spindle option, 60-tool magazine, and APC configuration push toward the upper range. Used MA-650V machines from 2013-2018 sell for $95,000-$140,000.
02
Similar travel envelopes but different construction and spindle approaches. Both use BT 50. The MA-650V has roller guides for production speed; the MB-80V has box ways for surface finish and vibration damping. The MA-650V has faster rapids (40 vs 24 m/min). Choose the MA for production volume, the MB for precision finishing in hard materials.
03
Yes, it's designed for production environments with automation integration. APC configurations, bar code tool management, and the OSP control's production tracking features support automated and semi-automated manufacturing cells. The large table accommodates pallet systems for lights-out operation.
04
The MA-650V provides 300 mm more X-travel (1,600 vs 1,300 mm), 100 mm more Y (660 vs 560 mm), 100 mm more Z (660 vs 560 mm), and 400 kg more table load (1,200 vs 800 kg). The larger machine costs $35-50K more but provides significantly more capability for large parts.
05
If your work regularly exceeds 1,600 mm in X-travel, 660 mm in Y, or 1,200 kg workpiece weight, a double-column machine like the Okuma MCR series is the better choice. Double-column machines also provide more rigidity for very heavy cuts. The MA-650V is the right choice when your work fits within its envelope and you want faster cycle times at lower cost.
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