Okuma MULTUS U3000

$700,000 – $950,000 Updated 2026-03-17

Key Specifications

Max Turning Diameter

650 mm (25.6 in)

Max Turning Length

1,500 mm (59.1 in)

Main Spindle Speed

20 – 3,300 rpm

Main Spindle Motor

22 / 26 kW (30 / 35 HP)

Sub-Spindle Speed

20 – 3,300 rpm

Universal Spindle Speed

20 – 10,000 rpm

Overview

The Okuma MULTUS U3000 is a universal mill-turn machining center engineered for medium-to-large complex parts requiring simultaneous 5-axis turning and milling. Its universal spindle design accepts both turning and milling tools, making it exceptionally flexible for parts that demand continuous tool changes between rotational and prismatic operations.

The U-series architecture differs from the B-series by offering a universal spindle that can index and lock at any angle, providing both continuous 5-axis interpolation and rigid positioning for heavy milling cuts. This makes it ideal for workpieces with deep pockets, angled bores, and complex 3D profiles that challenge conventional mill-turn designs.

Equipped with Okuma's OSP-P300S control, the MULTUS U3000 benefits from full 9-axis simultaneous control, allowing the main spindle, sub-spindle, B-axis, and all linear axes to be coordinated in a single program. The Collision Avoidance System runs in real time, preventing interference between all moving machine elements, tooling, and the workpiece.

The MULTUS U3000 is particularly valued in mold and die, aerospace, medical, and energy industries where parts are geometrically complex, tolerances are tight, and production volumes may be low to medium, making setup elimination critical to profitability.

Full Specifications

Parameter	Value
Max Turning Diameter	650 mm (25.6 in)
Max Turning Length	1,500 mm (59.1 in)
Main Spindle Speed	20 – 3,300 rpm
Main Spindle Motor	22 / 26 kW (30 / 35 HP)
Sub-Spindle Speed	20 – 3,300 rpm
Universal Spindle Speed	20 – 10,000 rpm
Universal Spindle Motor	22 / 26 kW (30 / 35 HP)
B-Axis Range	–30° to +210°
Y-Axis Travel	±150 mm
Number Of Controlled Axes	9
Rapid Traverse (X/Y/Z)	30 / 30 / 40 m/min
Chuck Size	315 mm
CNC Control	Okuma OSP-P300S
Machine Weight	Approx. 24,000 kg (52,900 lb)
Okuma Global Repair Center	Charlotte, North Carolina

Specifications sourced from okuma.com — verified 2026-03-28

Strengths & Limitations

Strengths

Universal spindle design handles both turning and milling with rigid lock-and-interpolate capability
9-axis simultaneous control enables the most complex multi-surface machining programs
Large Y-axis travel of ±150 mm accommodates heavily off-center milling and boring
Integrated sub-spindle enables complete done-in-one machining for complex shafts and housings
Real-time Collision Avoidance System protects the machine during intricate multi-axis programs

Limitations

Very high acquisition cost requires careful ROI analysis for job shop environments
Programming 9-axis multi-tasking requires advanced CAM software and skilled programmers
Large footprint and weight necessitate significant site preparation and crane installation

Best For

Aerospace OEM and tier-1 suppliers producing engine components and structural airframe parts Medical implant manufacturers machining complex spinal, hip, and knee components Mold and die shops requiring multi-surface 5-axis machining with turning capability Energy sector contractors machining large, complex downhole and subsea components

Frequently Asked Questions

01 What is the difference between the MULTUS U3000 and B-series MULTUS machines?

The U-series uses a universal spindle that functions as both a turning spindle and a milling head with continuous B-axis interpolation. The B-series has separate dedicated turning and milling spindles. The U-series offers greater flexibility for parts that blend turning and milling seamlessly, while the B-series can apply higher dedicated turning torque.

02 How many axes does the MULTUS U3000 control simultaneously?

The MULTUS U3000 supports up to 9 simultaneous axes, coordinating the main spindle (C1), sub-spindle (C2), B-axis, X, Y, Z, and secondary spindle axes in a single interpolated program.

03 What is the maximum turning length on the MULTUS U3000?

The MULTUS U3000 offers a maximum turning length of 1,500 mm (59.1 in), making it suitable for long shafts, rollers, and extended aerospace structural components.

04 Does the MULTUS U3000 support hard turning and grinding?

Yes. Optional grinding wheel adapters allow internal and external grinding operations, enabling hard turning followed by finish grinding of hardened components without leaving the machine.

05 What CAM software is recommended for the MULTUS U3000?

Hypermill, Mastercam, NX CAM, and Esprit are commonly used with MULTUS machines. Okuma also provides simulation post-processors for these platforms to work with the OSP-P300S control and CAS collision avoidance.