Mazak Quick Turn 450MY
Key Specifications
X Travel
Y Travel
Z Travel
max turning diameter
max machining length
swing over bed
Overview
The Mazak Quick Turn 450MY is a large-capacity mill-turn center that combines a 15-inch chuck platform with Y-axis milling capability, delivering serious multi-tasking performance for shops machining large-diameter parts that require both turning and milling in a single setup. The QT-450MY sits near the top of the Quick Turn lineup, designed for heavy-duty work in oil and gas, power generation, and heavy equipment manufacturing.
The main spindle delivers 30 kW (40 hp) at 3,300 RPM through an A2-11 spindle nose with 102 mm (4.02 in) bar capacity. The substantial power handles heavy roughing in steel, stainless, and cast iron at the large diameters this machine is built for. The 12-station BMT turret runs live tools at 6,000 RPM with 5.5 kW (7.4 hp), and the Y-axis provides 130 mm (+65/-65 mm) of off-center travel — generous for a machine this size and sufficient for milling large flats, cross-drilling, and machining hex features on big parts.
The work envelope covers 580 mm (22.83 in) maximum turning diameter and 1,020 mm (40.16 in) maximum machining length with axis travels of 310 mm (X), 130 mm (Y), and 1,100 mm (Z). Rapids hit 24 m/min on X, 12 m/min on Y, and 24 m/min on Z. At roughly 9,200 kg (20,282 lb), the QT-450MY is a substantial machine that demands solid foundation and proper installation.
Running MAZATROL SmoothG, the control provides advanced mill-turn programming with conversational cycles for both turning and milling operations. The combination of large capacity, Y-axis, and live tooling makes the QT-450MY a done-in-one platform for parts that would otherwise require separate lathe and mill setups. New machines price between $200,000 and $320,000, with used units from 2012-2022 trading between $80,000 and $200,000. The QT-450MY competes with the Okuma LB3000 EX II MY, Doosan Puma 4000MY, and DMG Mori NLX 4000. Specs sourced from Mazak published data and dealer documentation.
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | 580 mm (22.83 in) |
| Max Machining Length | 1,020 mm (40.16 in) |
| Swing Over Bed | 830 mm (32.68 in) |
| Bar Capacity | 102 mm (4.02 in) |
| X-Axis Travel | 310 mm (12.20 in) |
| Y-Axis Travel | 130 mm (±65 mm) |
| Z-Axis Travel | 1,100 mm (43.31 in) |
| Main Spindle Speed | 3,300 RPM |
| Main Spindle Power | 30 kW (40 hp) |
| Main Spindle Nose | A2-11 |
| Live Tool Speed | 6,000 RPM |
| Live Tool Power | 5.5 kW (7.4 hp) |
| Tool Stations | 12 (BMT turret) |
| Turret Type | BMT live tooling |
| Chuck Size | 15 in (A2-11) |
| Rapid Traverse X | 24 m/min (945 ipm) |
| Rapid Traverse Y | 12 m/min (472 ipm) |
| Rapid Traverse Z | 24 m/min (945 ipm) |
| Tailstock | Hydraulic, programmable (optional) |
| CNC Control | MAZATROL SmoothG |
| Machine Weight | 9,200 kg (20,282 lb) |
Strengths & Limitations
Strengths
- Y-axis with 130 mm travel on a 15-inch chuck platform eliminates secondary milling operations on large parts, saving significant setup time and improving accuracy
- 30 kW spindle provides heavy-duty roughing power for large-diameter steel and stainless steel workpieces without speed or torque limitations
- 5.5 kW BMT live tooling handles substantial milling, drilling, and tapping operations on large parts that would otherwise require a machining center
- 1,020 mm maximum machining length with optional tailstock supports long shaft work for power generation and oil and gas applications
- MAZATROL SmoothG control provides advanced mill-turn programming with conversational cycles for complex multi-operation parts
- 102 mm bar capacity accommodates 4-inch bar stock for large-diameter production turning with bar feeder automation
Limitations
- 9,200 kg machine weight requires reinforced concrete foundation and specialized rigging, adding significant installation cost
- Price premium of $50,000-$70,000 over the base QT-400 for Y-axis and live tooling may not be justified for pure turning work
- 3,300 RPM spindle speed limits surface speed on small-diameter features; not suited for high-speed aluminum work
- Large footprint requires substantial floor space; the machine plus bar feeder can exceed 8 meters in total length
- 12-station turret fills up quickly on complex mill-turn programs; shops may need to prioritize tooling or run parts in multiple operations
- 24 m/min rapids are moderate; long Z-axis moves add non-cutting time in production of shorter parts
Best For
Frequently Asked Questions
01
New QT-450MY machines start around $200,000-$240,000 for base configuration with Y-axis and live tooling. Adding sub spindle, tailstock, high-pressure coolant, steady rest, and automation pushes the price to $280,000-$320,000. Used units from 2012-2022 trade between $80,000 and $200,000 depending on hours and configuration.
02
The QT-400 is a pure 2-axis turning center in its base configuration, while the QT-450MY adds Y-axis and BMT live tooling for mill-turn capability. The work envelope is similar, but the QT-450MY adds the ability to mill flats, drill cross-holes, and machine features off the part centerline. The price premium is $50,000-$70,000.
03
For many applications, yes. The Y-axis and live tooling handle common secondary operations like cross-drilling, flat milling, keyway cutting, and tapping. However, parts requiring heavy 3-axis milling, large pocket machining, or complex contouring may still benefit from a dedicated machining center for the milling portion.
04
At 9,200 kg, the QT-450MY requires a reinforced concrete foundation typically 250-350 mm thick with proper isolation and leveling pads. Mazak provides foundation drawings with the machine quotation. Budget $8,000-$20,000 for foundation preparation depending on existing floor conditions and local contractor rates.
05
Yes, the QT-450MSY configuration adds a sub spindle for back-working operations on large parts. The sub spindle enables complete done-in-one processing of parts that need machining on both ends. Adding the sub spindle typically adds $40,000-$60,000 to the machine price.
Videos
Mazak North America
cnc World
United CNC Machining (a Paravis Industries Company)
Mazak North America
Toolquip, Inc.
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