Mazak Mega Turn 900

$300,000 - $450,000 Updated 2026-03-11

Key Specifications

Max Spindle

1,250 RPM

Spindle Power

30 kW (40 hp) at 40% ED

max turning diameter

920 mm (36.2 in)

max turning height

800 mm (31.5 in)

max swing

1,000 mm (39.4 in)

max workpiece weight

3,000 kg (6,614 lb)

Overview

The Mazak Mega Turn 900 is a vertical turning center (VTL) built for shops machining large, heavy workpieces up to 920 mm (36.2 in) in diameter and 3,000 kg (6,614 lb). Unlike conventional horizontal lathes, the vertical spindle orientation uses gravity to seat heavy parts naturally on the chuck, simplifying loading and improving concentricity on large-diameter work. The maximum swing of 1,000 mm (39.4 in) provides clearance for oversize castings and forgings.

The integrated main drive delivers 30 kW (40 hp) at 40% ED with a massive 3,655 Nm (2,696 ft-lb) of torque, allowing aggressive roughing cuts in cast iron, carbon steel, and alloy steel with high material removal rates up to 960 cm3/min. Spindle speed tops out at 1,250 RPM, which is appropriate for the large-diameter work this machine targets. Rapid traverse hits 24 m/min on both X and Z axes, keeping non-cutting time reasonable for a machine in this class.

The Mega Turn 900 is available in standard (900) and milling (900M) configurations. The 900M variant adds a milling spindle for drilling, tapping, and contouring operations, reducing the need to move large workpieces to a separate machining center. The MAZATROL SmoothG CNC provides conversational programming that simplifies setup for complex contours on large parts. Competitors include the Okuma V920EX, DMG Mori CTV 400, and Doosan Puma V8300. New Mega Turn 900 machines price between $300,000 and $450,000 depending on configuration. Used units from 2016-2022 trade between $150,000 and $300,000.

Full Specifications

Parameter	Value
Max Turning Diameter	920 mm (36.2 in)
Max Turning Height	800 mm (31.5 in)
Max Swing	1,000 mm (39.4 in)
Max Workpiece Weight	3,000 kg (6,614 lb)
Max Spindle Speed	1,250 RPM
Spindle Motor Power	30 kW (40 hp) at 40% ED
Spindle Torque	3,655 Nm (2,696 ft-lb)
Material Removal Rate	960 cm³/min
Rapid Traverse X	24 m/min (945 ipm)
Rapid Traverse Z	24 m/min (945 ipm)
Turret Type	12-station (milling spindle on 900M variant)
Chuck Size	24 in (610 mm) standard
Machine Orientation	Vertical spindle
CNC Control	MAZATROL SmoothG CNC
Machine Weight	12,000 kg (26,455 lb) approx.

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

Strengths & Limitations

Strengths

Vertical spindle orientation uses gravity to seat heavy workpieces naturally on the chuck, simplifying loading of 3,000 kg parts and improving concentricity without complex fixturing
3,655 Nm of spindle torque enables aggressive roughing in cast iron and steel with material removal rates up to 960 cm3/min, significantly reducing cycle times on large-diameter parts
920 mm turning diameter with 1,000 mm swing handles large castings, forgings, and flanges common in energy, aerospace, and heavy equipment applications
MAZATROL SmoothG conversational CNC simplifies programming for large, complex contours and reduces setup time for operators who may not be experienced G-code programmers
900M variant with milling spindle eliminates the need to move heavy workpieces to a separate machining center for drilling, tapping, and milling operations

Limitations

At 1,250 RPM maximum spindle speed, the Mega Turn 900 is limited to large-diameter work and is not suitable for small-diameter high-speed turning applications
Vertical orientation requires overhead crane access for loading and unloading heavy workpieces, adding infrastructure requirements for shops that don't already have crane coverage
12,000 kg machine weight requires substantial foundation preparation and limits placement flexibility within the shop, especially on upper floors or in older buildings
Rapid traverse at 24 m/min is slower than horizontal lathes in this price range, though less impactful given the large parts and long cycle times this machine handles

Best For

Energy sector manufacturers machining large valve bodies, flanges, pump housings, and pipe fittings in steel and cast iron up to 920 mm diameter Aerospace shops turning large landing gear components, engine casings, and structural rings that benefit from vertical loading and high torque Heavy equipment manufacturers producing large bearing housings, gearbox components, and hydraulic cylinders from castings and forgings Job shops specializing in large-diameter work that need the 900M milling variant to complete parts in a single setup without secondary operations Foundries and forge shops that need a production VTL for finishing large castings and forgings with high material removal rates

Frequently Asked Questions

01 What does a new Mazak Mega Turn 900 cost?

New Mega Turn 900 machines start around $300,000 for the base 2-axis configuration. The 900M variant with milling spindle typically adds $50,000-$80,000. Full configurations with through-spindle coolant, probing, chip conveyor upgrades, and automation integration can reach $400,000-$450,000. Used units from 2016-2022 trade between $150,000 and $300,000.

02 What is the difference between the Mega Turn 900 and 900M?

The standard Mega Turn 900 is a 2-axis vertical turning center for pure turning operations. The 900M adds a milling spindle with live tooling capability, enabling drilling, tapping, and contour milling on the turned workpiece. This eliminates the need to move heavy parts to a machining center for secondary operations, saving significant handling time and improving accuracy by completing parts in one setup.

03 How do you load parts on a vertical turning center?

Parts are loaded from above using an overhead crane, which is standard equipment in shops machining heavy components. The vertical orientation works with gravity — the workpiece seats naturally into the chuck under its own weight, improving concentricity. For automated production, the Mega Turn 900 can be integrated with gantry loaders or robotic loading systems. The open-top design provides excellent access for crane loading.

04 Can the Mega Turn 900 handle cast iron?

Yes, the Mega Turn 900 excels at cast iron machining. The 3,655 Nm of spindle torque and rigid machine structure support aggressive roughing cuts with high depth of cut and feed rates. Material removal rates up to 960 cm3/min are achievable in cast iron. The vertical orientation also provides excellent chip evacuation since gravity pulls chips away from the cutting zone.

05 How does the Mega Turn 900 compare to the Okuma V920EX?

Both are capable VTLs in the 900mm class. The Mazak offers slightly higher torque and the MAZATROL conversational control that many operators find easier to learn. The Okuma V920EX counters with the Thermo-Friendly Concept for thermal stability and the open-architecture OSP control. Both offer milling variants. The choice typically comes down to control preference, existing fleet standardization, and local dealer support.