The Okuma MULTUS B400II is a large-capacity, high-performance multi-tasking CNC machine designed to combine turning, milling, drilling, and material handling into a single platform. As one of the larger models in Okuma’s MULTUS B-series, it is built for machining medium to large, complex components with high precision and reduced setup time. The machine integrates lathe and machining center capabilities, allowing full part completion in one setup, which significantly improves productivity and accuracy.
It features a 225° B-axis milling head with a high-speed milling spindle reaching approximately 6,000 rpm (optional higher speeds), enabling advanced multi-axis machining. The machine supports a maximum turning diameter of around 710 mm and a turning length of up to 1,500–2,000 mm depending on configuration, making it suitable for industries such as aerospace, oil & gas, and heavy engineering.
The MULTUS B400II includes an automatic tool changer with capacities ranging from 20 to 120 tools and offers optional sub-spindle (W configuration) for complete part machining. Equipped with Okuma’s OSP-P500 control and Thermo-Friendly Concept, it ensures stable accuracy and ease of operation. Overall, the machine is designed for high-mix, complex production environments requiring flexibility, precision, and reduced cycle times.
OKUMA MULTUS B400IISPECIFICATIONS
OKUMA MULTUS B400II – AXIS
Multi-Axis CNC Turn-Mill Center
X, Z, Y Linear Axes
B-Axis (tilting milling spindle head – 225° range)
C-Axis (main spindle contouring)
Optional W-Axis (sub-spindle)
Up to 7-axis configuration depending on setup
OKUMA MULTUS B400II – AXIS TRAVELS
X-Axis Travel: Approx. 600 mm
Y-Axis Travel: Approx. ±100 mm
Z-Axis Travel: Approx. 1,500–2,000 mm (depending on variant)
B-Axis Range: 225°
Rapid Traverse (X/Z): Up to 40 m/min
Rapid Traverse (Y): Approx. 26 m/min
OKUMA MULTUS B400II – CAPACITY
Maximum Turning Diameter: 710 mm
Maximum Turning Length: 1,500–2,000 mm
Chuck Size: 10–12 inch class
Bar Capacity: Approx. 80–90 mm
Large work envelope for complex multi-operation parts
Spindle Motor Power: Approx. 22/15 kW (higher optional)
Spindle Nose: A2-8 / A2-11
Full C-axis contouring capability
OKUMA MULTUS B400II – TABLE
Machine Type: Slant Bed Turn-Mill
High-rigidity construction with roller guideways
Thermo-Friendly Concept for thermal stability
Designed for combined turning and milling operations
OKUMA MULTUS B400II – TOOL TURRET
Tool System: Automatic Tool Changer (ATC)
Standard Tool Capacity: 20 tools
Optional Tool Capacity: 40 / 60 / 80 / 120 tools
CAPTO-C6 tooling interface
High-speed tool change system
OKUMA MULTUS B400II – FEEDRATES
Rapid Traverse (X/Z): Up to 40 m/min
Rapid Traverse (Y): Approx. 26 m/min
Cutting Feed Rate: Fully programmable
High-precision servo-driven system
OKUMA MULTUS B400II – COOLANT & CHIP MANAGEMENT
Coolant System: Flood coolant
Optional High-Pressure Coolant
Chip Conveyor: Optional
Efficient chip evacuation for multi-process machining
OKUMA MULTUS B400II – CONTROL SYSTEM
Control: Okuma OSP-P500
Programming: IGF conversational + G-code
Collision Avoidance System (CAS) standard
Advanced simulation and monitoring features
OKUMA MULTUS B400II – POWER & AIR REQUIREMENTS
Power Requirement: Approx. 40–60 kVA
Voltage: 200–400V (region dependent)
Air Requirement: Clean compressed air
Air Pressure: Approx. 5–6 bar
OKUMA MULTUS B400II – DIMENSIONS
Machine Length: Approx. 4,500–5,500 mm
Machine Width: Approx. 2,500 mm
Machine Height: Approx. 2,500–2,800 mm
Machine Weight: Approx. 12,000–16,000 kg
OKUMA MULTUS B400II – GENERAL INFORMATION
Machine Type: CNC Multi-Tasking Turn-Mill Center
Manufacturer: Okuma
Combines lathe and machining center capabilities
Reduces setups and improves production efficiency
Designed for medium to large complex components
Supports automation and bar feeder integration
INDUSTRIES THAT USE OKUMA MULTUS B400II
Aerospace
Automotive
Energy & Oil & Gas
Medical
Heavy Engineering
TYPICAL PARTS OKUMA MULTUS B400II CAN PRODUCE
Large complex shafts
Aerospace structural components
Valve bodies
Pump housings
Multi-sided precision components
Heavy-duty machined parts
WHY CHOOSE OKUMA MULTUS B400II
Combines turning and milling in one machine
Reduces multiple setups and improves accuracy
Large capacity for medium to large parts
Flexible B-axis for complex geometries
High tool capacity for multi-process jobs
Advanced collision avoidance enhances safety
Ideal for high-precision, high-mix production
WHY BUY USED OKUMA MULTUS B400II
Buying a used Okuma MULTUS B400II is a strong investment for manufacturers that require large-part multi-tasking capability while controlling capital costs. These machines are engineered with heavy-duty construction, advanced thermal stability systems, and high-end controls, allowing them to maintain precision even after extended use in demanding production environments.
Cutting time (spindle hours) is one of the most critical factors when evaluating a used unit. Machines with low cutting hours—typically under 5,000–7,000 hours—are considered lightly used and can perform close to new condition. Units with moderate usage (7,000–18,000 hours) remain reliable for most applications if properly maintained. Machines with higher cutting hours (18,000–25,000+ hours) may require servicing of key components such as the milling spindle, B-axis head, or drive systems, but they can still provide strong value for less intensive production work.
One of the biggest advantages of the MULTUS B400II is its ability to consolidate multiple operations into a single setup. Even older machines retain features such as B-axis milling, Y-axis movement, and optional sub-spindle, enabling full part completion without additional machines. This reduces labor, setup time, and work-in-progress inventory.
For shops handling large, complex parts, a used MULTUS B400II offers premium capability, flexibility, and productivity at a significantly reduced investment.
HOW MUCH DOES A USED OKUMA MULTUS B400IICOST?
The cost of a used Okuma MULTUS B400II varies depending on manufacturing year, configuration, condition, and especially cutting time. Since the model has been available since the 2010s, pricing is typically segmented by age and usage rather than pre-2000 categories.
For early-generation machines (2010–2014), prices generally range from $100,000 to $180,000. These machines often have higher cutting hours (12,000–25,000+) and may require refurbishment, but they still offer full multi-tasking capability for large components.
Machines built between 2015 and 2020 typically fall in the $180,000 to $300,000 range. These represent the most active used market segment and usually include moderate cutting hours (6,000–15,000), along with updated controls and improved automation compatibility.
For newer machines from 2020 to 2025, prices can range from $300,000 to $500,000 or more depending on configuration, tooling packages, and automation systems. These machines generally have low cutting hours (under 5,000) and are close to new condition.
Cutting time plays a major role in pricing—machines with lower spindle hours command significantly higher values regardless of age. Buyers should also evaluate features such as sub-spindle, tool capacity, and automation integration to determine the true overall investment and long-term return.