Mazak QT-Ez 12MSY

$160,000 - $220,000 Updated 2026-03-19

Key Specifications

Max Spindle

3,500 RPM

Spindle Taper

A2-8

Tool Capacity

12-position turret

Weight

5,500 kg (12,125 lb)

Rapid Traverse

30 m/min X, 30 m/min Z

Spindle Power

22 kW (30 hp)

Overview

The Mazak QT-Ez 12MSY is the fully-loaded configuration of the 12-inch QT-Ez turning center, combining milling, sub-spindle, and Y-axis for done-in-one processing of larger workpieces at a value price point. This is the most capable machine in the QT-Ez 12 family, offering complete front-and-back machining with off-center milling capability.

The QT-Ez 12MSY runs a 305 mm (12 in) main chuck with a maximum turning diameter of 343 mm (13.5 in). The built-in motor main spindle delivers 22 kW (30 hp) at up to 3,500 RPM through an A2-8 spindle nose. The sub-spindle provides automatic part transfer for backworking, enabling complete processing of both ends without manual intervention. Bar capacity is 80 mm (3.15 in) for production feeding of larger diameter stock.

The 12-position turret with BMT 55 tooling runs live tools at 6,000 RPM. Y-axis travel of approximately 100 mm enables off-center milling on both spindles. C-axis resolution of 0.0001 degrees on both spindles ensures precise angular positioning. The BMT 55 rigidity handles the higher cutting forces associated with milling on larger workpieces.

MAZATROL SmoothEz manages the full multi-axis synchronization including spindle-to-spindle transfer, coordinated Y-axis operations, and simultaneous machining where applicable. The 15-inch touchscreen provides an accessible interface for programming these complex operations.

The QT-Ez 12MSY competes with the Haas DS-30SSY, Doosan Puma 3100MSY, and DN Solutions Puma GT-3100 MSY. It represents the top of the QT-Ez 12 lineup, delivering 12-inch MSY capability with Mazak's motor spindle technology at significantly less than the Quick Turn 350MSY. For shops producing completed parts from bar stock or chuck work that require features on both ends with milled details, the QT-Ez 12MSY provides maximum capability at accessible pricing. Specs sourced from Mazak Corporation published data.

Full Specifications

Parameter	Value
Chuck Size	12"
Max Turning Diameter	343 mm (13.5 in)
Max Turning Length	539 mm (21.22 in)
Max Spindle Speed	3,500 RPM
Spindle Motor Power	22 kW (30 hp)
Spindle Taper	A2-8
Sub Spindle	Yes
Bar Capacity	80 mm (3.15 in)
Tool Capacity	12-position turret
Turret Tooling	BMT 55
Live Tool Speed	6,000 RPM
C Axis Resolution	0.0001 degrees
Y Axis Travel	100 mm (3.94 in)
X Axis Travel	220 mm (8.66 in)
Z Axis Travel	596 mm (23.47 in)
Rapid Traverse Rate	30 m/min X, 30 m/min Z
Machine Weight	5,500 kg (12,125 lb)
CNC Control	MAZATROL SmoothEz
Max Machining Diameter	Φ13.5″
Max Machining Length	21.22″

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

Strengths & Limitations

Strengths

Done-in-one processing with sub-spindle on the largest QT-Ez platform eliminates secondary operations
Y-axis milling on both spindles enables complex features on front and back of larger parts
22 kW motor spindle provides solid power for aggressive turning on 12-inch chuck work
80 mm bar capacity supports production bar feeding of 3-inch stock through MSY processing
BMT 55 turret rigidity handles milling forces on heavier workpieces
Significant cost savings versus equivalent Quick Turn 350MSY configuration

Limitations

SmoothEz control lacks some advanced SmoothG multi-channel and simulation features
Single turret shared between main and sub-spindle limits true simultaneous machining
3,500 RPM max spindle speed constrains surface speed on smaller features
Programming complexity is significant with sub-spindle plus Y-axis operations

Best For

Production shops requiring done-in-one processing of larger turned parts with milled features Contract manufacturers running complete parts from 3-inch bar stock Shops replacing two-machine workflows for 12-inch chuck parts with features on both ends Manufacturers producing flanges, hubs, and fittings with complete mill-turn processing High-mix shops needing maximum versatility in the 12-inch chuck range at value pricing

Frequently Asked Questions

01 What does a new Mazak QT-Ez 12MSY cost?

New pricing runs $160,000-$220,000 depending on options. This represents the top of the QT-Ez 12 lineup but saves $50,000-$80,000 over the equivalent Quick Turn MSY.

02 QT-Ez 12MSY vs Quick Turn 350MSY?

The Quick Turn 350MSY offers SmoothG control, more mass, and larger work envelope with higher rigidity. The QT-Ez 12MSY covers most 12-inch MSY work at significantly lower pricing.

03 How does sub-spindle transfer work?

After main spindle machining completes, the sub-spindle advances, grips the part, the cutoff tool separates it, and the sub-spindle retracts for backworking operations. All automated.

04 Can both spindles run simultaneously?

Yes, limited simultaneous operations are possible. The main spindle can turn while the sub-spindle performs backworking, depending on turret position and tool configuration.