Yamazaki Mazak CNC Lathes / Turning Centers

Mazak QT-Ez 12MSY

Est. $160,000 - $220,000 Specs verified 2026-10-02 · mazak.com Updated 2026-10-02

Image: mazak.com, Yamazaki Mazak

Key Specifications

X Travel

9 in (229 mm)

Y Travel

4 in (102 mm)

Z Travel

24 in (610 mm)

Max Spindle

3,300 rpm

Tool Capacity

12 tools

Max Turn Length

21 in (533 mm)

How much does the Mazak QT-Ez 12MSY cost?

Estimated price range

Est.$160,000 - $220,000

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 QT-Ez 12MSY is the two-spindle, Y-axis version of the 12 in chuck QT-Ez turning center. A 12 in main chuck turns at up to 3,300 rpm on a motor listed at 22 kW (30 HP) (30 min. rating); opposite it sits a second spindle with a 6 in chuck, a 6,000 rpm top speed and 11 kW (15 HP) (30 min. rating).

The mismatch between the two ends defines what the machine does well. Whatever leaves the 12 in chuck has to be gripped in a 6 in chuck for the second operation, so the parts that run complete here are those with a hub, a shaft end or a bore the smaller chuck can hold. A wide, thin flange turned on the first side may simply have nothing for the second spindle to grip. Where the part does suit, the second spindle is well matched to the lighter back-end cuts, with its higher top speed and half the power of the main motor on the same 30 min. rating.

The table lists 12 tools. Front turning, back turning and any Y-axis work all have to be tooled from that count, which is usually the real limit on how complex a part can be finished in one cycle. Y travel is 4 in (102 mm), X travel 9 in (229 mm), Z travel 24 in (610 mm), and the W-axis travel is 23 in (584 mm).

The turning envelope is Ø14 in (356 mm) by 21 in (533 mm) with Ø3 in (76 mm) bar capacity. The QT-Ez 10MSY offers the same layout one size down: a main spindle at 4,200 rpm with 15 kW (20 HP) (30 min. rating) and a second spindle rated 8 kW (10 HP) (30 min. rating). No rotary-tool speed or power appears in Mazak's table for the QT-Ez 12MSY, so request it.

For unattended running, Mazak's series page lists an automatic door, a chip conveyor and high/low chuck pressure switching among the QT-Ez equipment. The page does not say which are standard.

Full Specifications

Parameter	Value
Max Swing	Ø27 in (686 mm)
Max Turning Diameter	Ø14 in (356 mm)
Max Turning Length	21 in (533 mm)
Max Bar Capacity	Ø3 in (76 mm)
Chuck Size	12 in
Max Spindle Speed	3,300 rpm
Spindle Power Intermittent	22 kW (30 HP) (30 min. rating)
Sub Spindle Chuck Size	6 in
Sub Spindle Speed	6,000 rpm
Sub Spindle Power Intermittent	11 kW (15 HP) (30 min. rating)
Tool Capacity	12 tools
X-Axis Travel	9 in (229 mm)
Y-Axis Travel	4 in (102 mm)
Z-Axis Travel	24 in (610 mm)
W Axis Travel	23 in (584 mm)

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

Strengths & Limitations

Strengths

Second spindle with a 6 in chuck, 6,000 rpm and 11 kW (15 HP) (30 min. rating)
Main spindle motor listed at 22 kW (30 HP) (30 min. rating) with a 12 in chuck
Y travel of 4 in (102 mm) and W-axis travel of 23 in (584 mm)
Turning length of 21 in (533 mm), longer than the 19 in (483 mm) of the QT-Ez 12M
Second spindle rated higher than the 8 kW (10 HP) (30 min. rating) unit on the QT-Ez 10MSY

Limitations

Parts must transfer from a 12 in chuck to a 6 in chuck, which rules out pieces with no small diameter to grip
12 tools have to cover both spindles and any Y-axis operations
Main spindle tops out at 3,300 rpm, low for small-diameter bar work
Mazak's table lists no rotary-tool speed or power for this model

Best For

Large-chuck parts with a hub or shaft end that a 6 in chuck can hold for the second side Complete machining of bar up to Ø3 in (76 mm) across two spindles Heavy first-side turning on 22 kW (30 HP) (30 min. rating) followed by light back-end finishing Parts needing off-centre features within 4 in (102 mm) of Y travel

Frequently Asked Questions

01 What size chuck is on the second spindle of the QT-Ez 12MSY?

6 in, against 12 in on the main spindle. The second spindle runs to 6,000 rpm and its motor is listed at 11 kW (15 HP) (30 min. rating). Any part transferred for back-end work has to have a diameter the 6 in chuck can grip.

02 How many tools does the QT-Ez 12MSY carry?

The table lists 12 tools. On a two-spindle machine those stations are shared between the front and back of the part and any Y-axis operations, so count the tools for the whole process before assuming a part can be finished in one cycle.

03 How does the QT-Ez 12MSY differ from the QT-Ez 12?

The QT-Ez 12 lists X and Z travel only, a 4,000 rpm spindle and a Ø16 in (406 mm) by 21 in (533 mm) turning envelope. The QT-Ez 12MSY adds 4 in (102 mm) of Y travel, a second spindle with a 6 in chuck and 23 in (584 mm) of W-axis travel, with a 3,300 rpm main spindle and a Ø14 in (356 mm) turning diameter. Both use a 12 in chuck and a 22 kW (30 HP) (30 min. rating) main motor.

04 What are the axis travels of the QT-Ez 12MSY?

X travel is 9 in (229 mm), Y travel 4 in (102 mm), Z travel 24 in (610 mm) and W-axis travel 23 in (584 mm). Swing is Ø27 in (686 mm), maximum turning diameter Ø14 in (356 mm) and maximum turning length 21 in (533 mm).

05 How do the two spindle motors compare?

The main spindle is listed at 22 kW (30 HP) (30 min. rating) with a 3,300 rpm top speed. The second spindle is listed at 11 kW (15 HP) (30 min. rating) with a 6,000 rpm top speed. Both are 30 min. ratings; Mazak's table gives no continuous figure for either.