Okuma MA-4000H
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
Overview
The Okuma MA-4000H is a high-performance 400mm horizontal machining center engineered for production environments that demand fast cycle times and high metal removal rates. With 560 mm X-axis, 650 mm Y-axis, and 685 mm Z-axis travel on 400 x 400 mm pallets, the MA-4000H occupies the high-productivity segment of the 400mm HMC class where speed and acceleration matter as much as cutting capability.
Rapid traverse rates hit 60 m/min across all linear axes with acceleration reaching 1.0G on X and Y and 1.1G on Z. Table indexing completes 90 degrees in 0.8 seconds and 180 degrees in 0.98 seconds. The standard No. 40 spindle runs at 15,000 RPM producing 38 kW (51 hp) at 40% ED and 18.5 kW (25 hp) continuous with 242 Nm maximum torque. Optional spindle configurations include a 20,000 RPM high-speed variant at 43 kW (58 hp) and a 12,000 RPM heavy-duty variant at 38 kW with 302 Nm maximum torque.
Tool storage starts at 48 positions and scales up to 340 tools with the matrix magazine option. Maximum workpiece capacity is 630 mm diameter by 900 mm height with 400 kg pallet load. The MA-4000H weighs 11,000 kg and requires 2,300 x 5,065 mm of floor space with a height of 2,750 mm. The machine runs on Okuma's OSP-P500M control.
The MA-4000H competes directly with the Mazak HCN-4000, DMG Mori NHX 4000, and Makino a40 in the 400mm HMC class. Okuma differentiates on the 1.0-1.1G acceleration rates and the Thermo-Friendly Concept for thermal stability across shift-long production runs. New MA-4000H machines price in the $300,000 to $450,000 range. Specs sourced from Okuma Corporation published data.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 560 mm (22.0 in) |
| Y-Axis Travel | 650 mm (25.6 in) |
| Z-Axis Travel | 685 mm (27.0 in) |
| Pallet Size | 400 x 400 mm (15.7 x 15.7 in) |
| Max Pallet Load | 400 kg (882 lb) |
| Max Workpiece Size | ø630 x 900 mm (ø24.8 x 35.4 in) |
| Max Spindle Speed | min⁻¹ (rpm) |
| Spindle Taper | No. 40 (BT40) |
| Spindle Motor Power | 38/18.5 |
| Spindle Torque | 242 Nm max |
| Rapid Traverse Rate | 60 |
| Acceleration | X/Y: 1.0G; Z: 1.1G |
| Table Indexing | 90° in 0.8 sec; 180° in 0.98 sec |
| Tool Capacity | 48 tools (up to 340 optional) |
| CNC Control | Okuma OSP-P500M |
| Machine Weight | 11,000 kg (24,251 lb) |
| Machine Footprint | 2,300 x 5,065 mm (90.6 x 199.4 in) (W x D) |
| Machine Height | 2,750 mm (108.3 in) |
| Max Machining Volume | 5650 x 650 x 685 |
| Rotary Pallet Size | 400 x 400 |
| Okuma Global Repair Center | Charlotte, North Carolina |
| Inches | Metric |
| Spindle Speed | 15,000 [12,000, 20,000] |
| Magazine Capacity | 48 [64, 140, 180, 220, 260, 300, 340] |
Specifications sourced from okuma.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 1.0G acceleration on X/Y and 1.1G on Z with 60 m/min rapids deliver class-leading non-cutting time reduction for high-volume production
- 90-degree table indexing in 0.8 seconds minimizes chip-to-chip time in multi-face machining operations
- 38 kW spindle power with 242 Nm torque at 15,000 RPM provides both speed and cutting capability across steel and aluminum
- Tool magazine scales from 48 to 340 positions, supporting high-mix production without frequent manual tool loading
- 11,000 kg machine weight on a compact 2,300 x 5,065 mm footprint provides rigidity without excessive floor space requirements
- Thermo-Friendly Concept maintains accuracy across full production shifts without operator intervention for thermal compensation
Limitations
- 400 kg pallet load limits fixture and part weight compared to 500mm-class HMCs that typically handle 500-700 kg
- 560 mm X-axis travel is adequate but tight for complex tombstone setups with parts on all four faces
- No. 40 taper standard limits heavy roughing capability in hard materials — shops doing primarily steel work should consider the heavy-duty 12,000 RPM spindle option
- Okuma's OSP control has a smaller third-party post processor ecosystem compared to Fanuc-based competitors
Best For
Frequently Asked Questions
01
New MA-4000H machines price between $300,000 and $450,000 depending on spindle selection and tool magazine configuration. The 340-tool matrix magazine adds significantly to the base price. High-pressure coolant, through-spindle coolant, and probing systems are common options. Used MA-4000H machines from 2010-2020 trade between $100,000 and $250,000.
02
The MA-series emphasizes speed and acceleration with 60 m/min rapids and 1.0-1.1G acceleration, targeting high-volume production. The MB-series prioritizes rigidity and general-purpose capability. Both share the 400mm pallet platform, but the MA-4000H has faster axis motion while the MB-4000H offers a more rigid box-way design for heavier cutting. Choose the MA for cycle-time-sensitive production and the MB for heavier material removal.
03
Yes. The dual-pallet changer allows loading one pallet while the other cuts. With tool life management, tool breakage detection, and the 340-tool matrix magazine, the MA-4000H supports extended unattended runs. Multi-pallet automation systems are available as options for full lights-out production cells.
04
The MA-4000H runs Okuma's OSP-P500M control, which is Okuma's proprietary CNC platform. It supports G-code programming and includes Okuma's intelligent technologies: Thermo-Friendly Concept, Anti-Crash System, Machining Navi, and Servo Navi. The OSP control is built by Okuma specifically for their machines, providing tight integration between the CNC and machine mechanics.
Videos
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Community Discussions
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