Yamazaki Mazak CNC Lathes / Turning Centers

Mazak QT-350MY

Est. $180,000 - $280,000 Specs verified 2026-10-02 · mazak.com Updated 2026-10-02

Image: mazak.com, Yamazaki Mazak

Key Specifications

X Travel

270 mm

Y Travel

150 mm

Z Travel

690 mm

Max Spindle

3,300 rpm

Tool Capacity

12 tools

Spindle Power

22 kW continuous

How much does the Mazak QT-350MY cost?

Estimated price range

Est.$180,000 - $280,000

Our best estimate for a cnc lathes / turning center in this class — not a quote from Yamazaki Mazak. Configuration moves it a long way.

Overview

The Mazak Quick Turn 350MY is a 12 in chuck turning center with milling and a Y-axis, given on Mazak's model list as Milling, Y-axis, VDI. In the 650U bed length it turns up to Ø420 mm, with 690 mm of Z travel, 270 mm of X and 150 mm of Y. The main spindle runs to 3,300 rpm and is rated 22 kW continuous and 30 kW at 40% ED, with 808 Nm (596 ft-lb) of torque (15%ED).

Those spindle figures describe a machine biased toward torque over speed. A ceiling of 3,300 rpm with 808 Nm behind it suits heavy cuts in steel at diameters near the top of the envelope, and leaves small-diameter work short of surface speed. Bar capacity is Ø80 mm and chuck work is limited to 650 kg. Mazak also gives a standard finished diameter of Ø336 mm, well below the Ø420 mm maximum, so size everyday work to the smaller figure. The distance from spindle face to turret face runs from 138 mm to 823 mm.

The milling side is specified in unusual detail. The rotary tool spindle reaches 5,000 rpm with 5.5 kW continuous, 7.5 kW at 40% ED and a maximum torque of 95 Nm (70 ft-lb) at 10% ED. Mazak states its capability as a Ø25 mm drill, a Ø25 mm end mill and an M24 × 3.0 tap, which tells you plainly that the live tools are for drilling, tapping and moderate milling, not for hogging. The turret is a drum with 12 positions (VDI), taking 25 mm shank tools and Ø50 mm boring bars.

Rapids are 30,000 mm/min in X, 33,000 mm/min in Z and 15,000 mm/min in Y, and the C-axis turns at 555 rpm. The tailstock has 645 mm of travel and an MT No.5 taper. On the floor the machine occupies 2,100 mm × 3,355 mm (W × L, with MAZATROL SmoothG), stands 2,175 mm high and weighs 9,000 kg.

Full Specifications

Parameter	Value
Bed Length Type	650U
Max Swing	Ø830 mm
Max Turning Diameter	Ø420 mm
Standard Finished Diameter	Ø336 mm
Distance From Spindle Face to Turret Face	138 mm to 823 mm
Max Weight Capacity Chuck Work	650 kg
Max Table Load	1000 kg
Max Bar Capacity	Ø80 mm
Chuck Size	12 in
Max Spindle Speed	3,300 rpm
Spindle Torque Intermittent	808 Nm (596 ft-lb) (15% ED)
Spindle Power Intermittent	30 kW (40% ED)
Spindle Motor Power	22 kW continuous
Turret Type	12 positon drum turret (VDI)
Tool Capacity	12 tools
Turret Tool Shank Height	25 mm
Turret Boring Bar Shank Diameter	Ø50 mm
Milling Spindle Speed	5,000 rpm
Rotary Tool Spindle Milling Capability Drill Endmill Tap	Ø25 mm / Ø25 mm / M24 × 3.0
Rotary Tool Spindle Max Torque 10 Pct Ed	95 Nm (70 ft-lb) (10% ED)
Rotary Tool Spindle Spindle Motor 40 Pct Ed	7.5 kW (40% ED)
Milling Spindle Power	5.5 kW continuous
X-Axis Travel	270 mm
Y-Axis Travel	150 mm
Z-Axis Travel	690 mm
Rapid Traverse X	30000 mm/min
Rapid Traverse Y	15000 mm/min
Rapid Traverse Z	33000 mm/min
Rapid Traverse C Axis	555 rpm
Tailstock Travel	645 mm
Tailstock Taper	MT No.5
Floor Space Required	2100 mm × 3355 mm (W × L, MAZATROL SmoothG)
Machine Height	2175 mm
Machine Weight	9000 kg

Specifications sourced from mazak.com — verified 2026-10-02

Strengths & Limitations

Strengths

Main spindle torque of 808 Nm (596 ft-lb) (15%ED), with 22 kW continuous and 30 kW at 40% ED
Y-axis travel of 150 mm on a Ø420 mm turning diameter
Rotary tool spindle with 5,000 rpm, 5.5 kW continuous and 95 Nm (70 ft-lb) maximum torque at 10% ED
Tailstock with 645 mm of travel and an MT No.5 taper is in Mazak's table
Rapid traverse of 30,000 mm/min in X and 33,000 mm/min in Z
Bar capacity of Ø80 mm and a 650 kg limit for chuck work

Limitations

Spindle speed stops at 3,300 rpm, which limits surface speed on small diameters
Standard finished diameter is Ø336 mm, less than the Ø420 mm maximum turning diameter
Live-tool capability is stated as a Ø25 mm drill, Ø25 mm end mill and M24 × 3.0 tap; heavier milling is outside it
Y-axis rapid is 15,000 mm/min, half the 30,000 mm/min of X
No second spindle in Mazak's configuration of the 350MY

Best For

Heavy turning in steel using 808 Nm (596 ft-lb) of torque (15%ED) Chucked parts up to 650 kg and Ø420 mm with drilled and tapped features Off-centre milling within 150 mm of Y travel Shaft work supported by the tailstock over its 645 mm of travel Bar-fed parts up to Ø80 mm

Frequently Asked Questions

01 What are the spindle ratings of the Quick Turn 350MY?

The main spindle is rated 22 kW continuous and 30 kW at 40% ED, with 808 Nm (596 ft-lb) of torque (15%ED) and a 3,300 rpm maximum. The rotary tool spindle is rated 5.5 kW continuous and 7.5 kW at 40% ED, with 95 Nm (70 ft-lb) at 10% ED and 5,000 rpm. Use the continuous figures for long cuts and the short-duty figures only for brief ones.

02 How heavy a workpiece can it hold?

Mazak lists a maximum weight of 650 kg for chuck work. The same table carries a second load row of 1000 kg without saying which setup it applies to. Plan chucked parts to the 650 kg figure and ask Mazak what the higher figure covers before relying on it.

03 What can the live tools actually cut?

Mazak states the milling capability of the rotary tool spindle as a Ø25 mm drill, a Ø25 mm end mill and an M24 × 3.0 tap. Behind that are 5,000 rpm, 5.5 kW continuous and 95 Nm (70 ft-lb) of maximum torque at 10% ED. With 150 mm of Y travel those tools can reach features well off the centreline.

04 How much room does the Quick Turn 350MY need?

The footprint is 2,100 mm × 3,355 mm (W × L) with the MAZATROL SmoothG control, the height is 2,175 mm and the weight is 9,000 kg. Those are the machine's own dimensions; allow extra for the chip conveyor, bar feeder and door access when laying out the cell.

05 What tooling does the turret take?

A drum turret with 12 positions and a VDI interface, holding 12 tools. Turning tools have a 25 mm shank height and boring bars a Ø50 mm shank diameter. Mazak's series page lists the same Ø50 boring bar and 25 mm shank for the 12-inch chuck group.

06 Is it suited to shafts?

Within limits. Z travel is 690 mm and the tailstock travels 645 mm on an MT No.5 taper, while the spindle face to turret face distance runs from 138 mm to 823 mm. That covers medium-length shafts up to Ø420 mm; the table gives no maximum turning length figure, so confirm the length for your chuck and centre.