Okuma V760EX

$200,000 - $320,000 Updated 2026-03-13

Key Specifications

Max Spindle

min⁻¹

Rapid Traverse

Spindle Power

30/22

Accuracy

±0.005 mm

Repeatability

±0.003 mm

max turning diameter

760 mm (29.9 in)

Overview

The Okuma V760EX is a vertical turning center (VTL) designed for high-precision production of disc-shaped and ring-shaped parts that benefit from gravity-assisted workholding and chip evacuation. Unlike horizontal lathes where the spindle axis runs horizontally, the V760EX mounts the workpiece face-up on a vertical spindle table, allowing heavy parts to seat naturally under their own weight and chips to fall away from the cutting zone by gravity.

The vertical spindle table accommodates chucks up to 24 inches (610 mm). Maximum turning diameter is 760 mm (29.9 in), giving the machine its model name. Maximum turning height is 450 mm (17.7 in). The spindle table delivers 30/22 kW (40/30 hp) at up to 700 RPM. While 700 RPM sounds low compared to horizontal lathes, at a 760 mm diameter the surface speed reaches over 1,600 m/min—more than adequate for any material.

The V760EX carries a 12-station turret with optional driven tools for milling, drilling, and tapping operations. X-axis travel is 430 mm (16.9 in) and Z-axis travel is 500 mm (19.7 in). Rapid traverse rates are 20 m/min on X and 18 m/min on Z. The machine weighs approximately 8,500 kg (18,739 lb), providing substantial rigidity for heavy-duty facing, boring, and contouring operations.

Okuma's OSP-P300L control runs the machine with Thermo-Friendly Concept integration. The vertical spindle configuration offers inherent thermal stability advantages since heat rises away from the workpiece rather than into it. Collision Avoidance System is available for crash protection.

The V760EX competes with vertical turning centers from Mazak (VTC-530C), DMG Mori (CTV series), Emag (VL and VTC series), and Hessapp in the mid-size VTL segment. Vertical lathes are the preferred architecture for production of disc-shaped automotive parts (brake rotors, clutch plates, gear blanks), bearing races, flanges, and ring gears. The gravity-assisted chip evacuation and natural workpiece seating provide productivity advantages over horizontal lathes for these part geometries. Specs sourced from Okuma published data.

Full Specifications

Parameter	Value
Max Turning Diameter	760 mm (29.9 in)
Max Turning Height	450 mm (17.7 in)
Table Speed Max	700 RPM
Spindle Motor Power	30/22
Chuck Size	Up to 24 in (610 mm)
Turret Stations	12
X Axis Travel	430 mm (16.9 in)
Z Axis Travel	500 mm (19.7 in)
Rapid Traverse Rate	24
Positioning Accuracy	±0.005 mm
Repeatability	±0.003 mm
Machine Weight	8,500 kg (18,739 lb)
CNC Control	Okuma OSP-P300L
Machine Type	Vertical Turning Center (VTL)
Max Cutting Diameter	Ø760
Max Cutting Length	770
Swing Over Bed	mm
Max Spindle Speed	min⁻¹
Okuma Global Repair Center	Charlotte, North Carolina
Inches	Metric
Max Swing	Ø800
Spindle Speed	20~2,000

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

Strengths & Limitations

Strengths

Vertical spindle configuration provides gravity-assisted chip evacuation for cleaner cutting and longer tool life
Heavy disc-shaped parts seat naturally on the vertical table under their own weight, simplifying fixturing
760 mm turning diameter handles large flanges, brake rotors, gear blanks, and bearing races
30 kW spindle delivers serious facing and boring power for heavy stock removal on castings and forgings
Inherent thermal stability advantage as heat rises away from the workpiece rather than into it
12-station turret with optional driven tools enables milling and drilling without secondary operations

Limitations

700 RPM max table speed limits surface speed on small-diameter features within the turning range
Vertical configuration makes it harder for operators to visually monitor the cutting process
450 mm max turning height limits tall workpieces; horizontal lathes offer more flexibility for shaft-like parts
Starting at $200K, the investment is significant for shops that don't have enough disc-shaped parts to justify a VTL
Part loading requires overhead crane or robot for heavy workpieces due to the vertical table access

Best For

Automotive production of brake rotors, clutch plates, flywheels, and gear blanks at high volumes Bearing manufacturers producing inner and outer races for large industrial bearings Flange and ring gear production for oil and gas, power generation, and industrial equipment Valve body and pump housing manufacturers turning large disc-shaped castings Any production environment focused on disc-shaped or ring-shaped parts where gravity-assisted fixturing and chip evacuation improve quality and throughput Shops wanting to free up horizontal lathe capacity by moving disc-shaped work to a purpose-built VTL

Frequently Asked Questions

01 What does an Okuma V760EX cost?

New V760EX machines run $200,000-$320,000 depending on configuration. Base turning configurations start around $200,000-$240,000. Full configurations with driven tools, automation integration, and extended options reach $280,000-$320,000. Used Okuma vertical lathes from 2013-2019 sell for $90,000-$160,000.

02 Why choose a vertical lathe over a horizontal lathe?

Vertical lathes excel on disc-shaped and ring-shaped parts. Gravity pulls chips away from the cut rather than into it, improving surface finish and tool life. Heavy parts seat naturally on the vertical table without complex fixturing. Loading is simpler for automated cells with overhead gantry loaders. For shaft-like parts with high L/D ratios, horizontal lathes remain the better choice.

03 Can the V760EX do milling operations?

Yes, with the optional driven tool turret. The 12-station turret accepts driven tools for drilling, tapping, and light milling operations on the vertical table. This eliminates secondary operations for features like bolt holes, oil passages, and keyways on disc-shaped parts.

04 How are parts loaded on the V760EX?

Light parts can be loaded manually. Heavy parts typically use an overhead crane, gantry loader, or robot. Okuma offers gantry loader integration as a factory option. The vertical table access makes automation integration straightforward—the loader simply places the part on the table from above.

05 How does the V760EX compare to the Emag VL series?

The Emag VL series uses an inverted spindle (spindle on top) that picks up and loads parts automatically, making it highly automated but limited to lighter workpieces. The V760EX uses a traditional table-up configuration that handles heavier workpieces and offers more flexibility. The Emag is better for high-volume automotive production lines; the V760EX is more versatile for mixed production of heavy parts.