Okuma MU-6300V

$350,000 - $500,000 Updated 2026-03-13

Key Specifications

Max Spindle

min⁻¹

Tool Capacity

32 tools

Table Size

Ø630

Rapid Traverse

Spindle Power

table diameter

ø630 mm (24.8 in)

Overview

The Okuma MU-6300V is a mid-range 5-axis vertical machining center with a 630 mm diameter trunnion table, stepping up from the MU-4000V for shops that need larger workpiece capacity while maintaining simultaneous 5-axis capability. The dual-support trunnion design provides the rigidity needed for both milling and optional turning operations on medium-sized parts.

Two spindle configurations are available: 10,000 RPM and 6,000 RPM, both producing 11 kW (15 hp) at 10-minute rating and 7.5 kW (10 hp) continuous. These power levels are moderate by 5-axis machine standards, positioning the MU-6300V for precision work in aluminum, steel, and light alloys rather than heavy roughing in difficult materials. The machine achieves a milling capacity of 504 cm3/min with an 80 mm face mill at 225 m/min cutting speed and end mill capacity of 672 cm3/min with a 20 mm roughing end mill at 4,000 RPM.

The trunnion table provides turning capability with rotation speed up to 252 RPM for turning operations on round features. Tool storage holds 32 tools. Machine dimensions are 4,850 x 2,990 x 3,525 mm. Ball screw cooling is standard equipment for thermal stability. The MU-6300V features Okuma's Thermo-Friendly Concept, Anti-Crash System, Five-Tuning, and Process Navi.

The MU-6300V competes with the Mazak VARIAXIS i-700, DMG Mori DMU 65, and Hermle C 32 in the mid-size 5-axis segment. Okuma's key differentiator is the optional turning capability and Five-Tuning calibration system that competitors do not offer. New MU-6300V machines price in the $350,000 to $500,000 range. Specs sourced from Okuma Corporation published data.

Full Specifications

Parameter	Value
Table Diameter	ø630 mm (24.8 in)
Max Spindle Speed	min⁻¹
Spindle Motor Power	kW
Tool Capacity	32 tools
Milling Capacity Face	504 cm³/min (ø80 face mill, 225 m/min)
Milling Capacity Endmill	672 cm³/min (ø20 roughing endmill, 4,000 RPM)
Turning Capability	Table rotation up to 252 RPM for turning
Ball Screw Cooling	Standard
Trunnion Type	Dual-support (both-end-supported)
CNC Control	Okuma OSP-P500M
Machine Dimensions	4,850 x 2,990 x 3,525 mm (190.9 x 117.7 x 138.8 in) (W x D x H)
Thermo Friendly Concept	Standard
Anti Crash System	Standard
Five Tuning	Standard
Process Navi	Standard
Max Machining Volume	Ø830 x 550
Table Size	Ø630
Rapid Traverse Rate	50
Okuma Global Repair Center	Charlotte, North Carolina
Inches	Metric
Spindle Speed	10,000
Spindle Motor Power	11/7.5
Magazine Capacity	32 [48, 64, matrix]

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

Strengths & Limitations

Strengths

630 mm trunnion table accommodates medium-sized parts that are too large for the MU-4000V's 400 mm table
Dual-support trunnion design provides excellent rigidity for both milling and turning operations on the same workpiece
Ball screw cooling as standard equipment reduces thermal growth without optional equipment purchases
Five-Tuning calibration system enables operators to verify and correct 5-axis accuracy in 15 minutes without external service
Turning capability up to 252 RPM enables round feature machining without transferring parts to a lathe
Milling capacity of 672 cm³/min with ø20 roughing endmill demonstrates productive material removal for a machine in this class

Limitations

11 kW spindle power is modest for a 5-axis machine of this table size — heavy roughing in steel and titanium will be limited
32-tool magazine is limited for complex 5-axis parts requiring many different cutting tool types
10,000 RPM maximum spindle speed is conservative compared to competitors offering 15,000-20,000 RPM in this class
252 RPM maximum turning speed limits achievable surface speeds for turning features on smaller diameters
Machine footprint of 4,850 x 2,990 mm is larger than some competing 5-axis machines with similar workpiece capacity

Best For

Aerospace shops machining medium-sized aluminum and titanium structural components requiring 5-axis access with optional turning Job shops needing a versatile 5-axis platform for medium-sized parts with combined milling and turning capability Mold and die shops machining complex inserts and components requiring 5-axis simultaneous contouring Precision manufacturers producing medium-sized parts that are too large for compact 5-axis machines but too small for full-size platforms Shops requiring both 5-axis milling and turning features on round workpieces in a single setup

Frequently Asked Questions

01 What does a new Okuma MU-6300V cost?

New MU-6300V machines typically price between $350,000 and $500,000 depending on spindle configuration (10K vs 6K RPM), turning capability options, and accessories. Used MU-6300V machines from 2012-2020 trade between $150,000 and $300,000 depending on hours and condition.

02 Should I choose the 10,000 or 6,000 RPM spindle?

The 10,000 RPM option is more versatile for mixed-material work, providing adequate surface speeds for aluminum while still handling steel. The 6,000 RPM option is better suited for shops primarily machining steel and cast iron where torque at lower speeds matters more. Most shops choose the 10,000 RPM configuration for flexibility.

03 How does the MU-6300V compare to the MU-4000V?

The MU-6300V steps up from the MU-4000V with a 630mm table (vs 400mm), accommodating larger parts. However, the MU-4000V has a more powerful spindle (22 kW vs 11 kW) and higher speed (15,000 vs 10,000 RPM). The MU-4000V is better for small precision parts with demanding cutting requirements, while the MU-6300V handles larger parts at more moderate cutting parameters.

04 Is 11 kW enough for production work?

11 kW is adequate for precision finishing and moderate roughing in aluminum and steel. For aggressive roughing in steel, titanium, or Inconel, the MU-6300V will be limited compared to competitors with 22-30 kW spindles. Shops doing heavy roughing should consider the MU-8000V or MU-4000V (which has more spindle power in a smaller envelope) or use a separate roughing machine.