Okuma VTR-160A

$500,000 - $900,000 Updated 2026-03-13

Key Specifications

Max Spindle

min⁻¹ (rpm)

Tool Capacity

23 tools

Table Size

Ø1,250

Spindle Power

45/37 [75/60]

Max Turn Length

1,200 [1,600]

max turning diameter

Ø1,600

Overview

The Okuma VTR-160A is a large vertical turning and milling center designed for machining heavy, round workpieces up to 1,600 mm in diameter and 1,250 mm in height. Combining vertical turning with milling capability in a single setup, the VTR-160A eliminates the need to transfer large parts between a vertical turret lathe and a machining center, reducing setup time and improving concentricity on features that span both turning and milling operations.

The main table rotates at up to 400 RPM, powered by a 45 kW (60 hp) motor at 30-minute rating and 37 kW (50 hp) continuous. This provides the torque needed for heavy turning operations on steel, cast iron, and alloy materials in aerospace, energy, and heavy industry applications. The milling spindle adds cross-drilling, face milling, and contouring capability without reclamping the workpiece.

Tool storage accommodates 23 tools. The machine runs on Okuma's OSP control with Thermo-Friendly Concept for thermal stability during long turning cycles where spindle heat is a primary concern. Machine dimensions are 6,550 x 3,693 x 5,000 mm, reflecting the heavy-duty construction needed for large rotational parts.

The VTR-160A competes with the Mazak INTEGREX e-V series, DMG Mori NTX 2000, and Hankook VTC series in the vertical turning and milling segment. Okuma's advantage is the Thermo-Friendly Concept maintaining accuracy across long thermal cycles and the reliability of Okuma's single-source machine and control integration. New VTR-160A machines typically price in the $500,000 to $900,000 range. The machine is ideal for aerospace landing gear components, power generation turbine discs, valve bodies, and heavy industrial flanges. Specs sourced from Okuma Corporation published data.

Full Specifications

Parameter	Value
Max Turning Diameter	Ø1,600
Max Workpiece Height	1,250 mm (49.2 in)
Table Speed Max	400 RPM
Main Motor Power	45/37 kW (30 min/continuous) (60/50 hp)
Tool Capacity	23 tools
Machining Type	Turning + Milling (multitasking)
CNC Control	Okuma OSP-P500M
Machine Dimensions	6,550 x 3,693 x 5,000 mm (257.9 x 145.4 x 196.9 in) (W x D x H)
Thermo Friendly Concept	Standard
Anti Crash System	Standard
Process Navi	Standard
Servo Navi	Standard
Workpiece Shape	Round/cylindrical parts, flanges, discs, rings
Max Turning Length	1,200 [1,600]
Z Axis Travel Ram	900 [1,250]
W Axis Elevating Rail	600 [800]
Table Size	Ø1,250
Max Load	10,000
Max Spindle Speed	min⁻¹ (rpm)
Spindle Motor Power	45/37 [75/60]
Torque	17.1/14 [28.5/22.8]
Okuma Global Repair Center	Charlotte, North Carolina
Inches	Metric
Spindle Speed	1~400
C Axis	360 (minimum control angle 0.001°)

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

Strengths & Limitations

Strengths

Combined turning and milling in a single setup eliminates part transfer between VTL and machining center, improving concentricity and reducing total cycle time
1,600 mm maximum turning diameter covers a wide range of large round parts including turbine discs, valve bodies, and aerospace ring components
45 kW motor with 400 RPM table speed provides sufficient power and speed for productive heavy turning in steel and cast iron
Thermo-Friendly Concept maintains dimensional accuracy during long turning cycles where thermal growth is the primary source of error
Okuma's single-source machine and control integration eliminates compatibility issues between the CNC and machine mechanics
Vertical orientation allows gravity-assisted chip evacuation and natural workpiece loading with overhead cranes

Limitations

23-tool magazine is limited for complex multitasking operations combining turning and milling — shops may need to plan tool changes between operations
400 RPM maximum table speed limits achievable surface speeds on smaller diameter features, requiring trade-offs on finish quality
Large machine footprint of 6,550 x 3,693 mm plus service clearances requires significant floor space allocation
Milling capability, while useful, does not match the rigidity or spindle power of a dedicated machining center for heavy milling operations
Premium pricing starting around $500,000 requires consistent large-part volume to justify over separate VTL and machining center combination

Best For

Aerospace manufacturers machining landing gear components, turbine discs, and engine casings requiring both turning and milling features Power generation shops machining turbine components, generator rotors, and large valve bodies in single setups Oil and gas industry shops producing flanges, valve bodies, and wellhead components in alloy steels and Inconel Heavy equipment manufacturers machining large bearing housings, gear blanks, and transmission components Shops looking to consolidate VTL and machining center operations into a single machine to reduce work-in-progress and improve part accuracy

Frequently Asked Questions

01 What does a new Okuma VTR-160A cost?

New VTR-160A machines typically price between $500,000 and $900,000 depending on milling spindle configuration, tooling options, and accessories. Live tooling capability, high-pressure coolant, and probing systems add to the base price. Used VTR-160A machines from 2010-2020 trade in the $200,000-$450,000 range depending on hours and condition.

02 How does the VTR-160A compare to the larger VTR-350A?

The VTR-160A handles parts up to 1,600 mm diameter and 1,250 mm height with 400 RPM table speed and 45 kW power. The VTR-350A scales up to 3,500 mm diameter and 1,600 mm height with 160 RPM and 55 kW. Choose the VTR-160A for medium-large round parts and the VTR-350A for truly oversized workpieces like large turbine components and marine diesel engine parts.

03 Can the VTR-160A replace a vertical turret lathe?

For many applications, yes. The VTR-160A provides CNC-controlled turning with the added benefit of milling capability. The 400 RPM table speed and 45 kW motor cover most VTL applications in this size range. The main advantage over a standalone VTL is eliminating the second setup on a machining center for cross-drilled holes, bolt patterns, and milled features.

04 What workpiece weight can the VTR-160A handle?

While Okuma does not publish a specific maximum workpiece weight for the VTR-160A, the machine's construction and 45 kW drive system are designed for heavy parts typical of the 1,600 mm diameter class. Parts in the 2,000-5,000 kg range are typical. Consult Okuma directly for your specific application and weight requirements, as the maximum depends on part geometry and balance.