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 of off-center travel for milling large flats, cross-drilling bolt patterns, 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 on X, 130 mm on Y, and 1,100 mm on Z. Rapid traverse rates reach 24 m/min on X and Z. At approximately 9,200 kg (20,282 lb), the QT-450MY is a substantial machine that demands solid foundation and proper installation.
MAZATROL SmoothG handles 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 pricing typically falls 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 LB4000 EX II MY, Doosan Puma 4000MY, and DMG Mori NLX 4000. Specs sourced from Mazak Corporation published data.
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) |
Specifications sourced from mazakusa.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Y-axis with 130 mm travel on a 15-inch chuck platform eliminates secondary milling operations on large parts
- 30 kW spindle provides heavy-duty roughing power for large-diameter workpieces in steel and stainless
- BMT live tooling at 6,000 RPM handles substantial milling, drilling, and tapping on large parts
- 1,020 mm maximum machining length with optional tailstock supports long shaft work
- MAZATROL SmoothG provides advanced mill-turn programming with conversational cycles
- 102 mm bar capacity accommodates 4-inch bar stock for large-diameter production turning
Limitations
- 9,200 kg machine weight requires reinforced concrete foundation and specialized rigging
- Price premium of $30,000-$50,000 over the base QT-450M for Y-axis may not be justified for pure turning work
- 3,300 RPM spindle speed limits surface speed on small-diameter features
- 24 m/min rapids are moderate; long Z-axis moves add non-cutting time in production
Best For
Frequently Asked Questions
01
New pricing typically falls between $200,000 and $320,000 depending on options. Adding sub spindle, tailstock, high-pressure coolant, steady rest, and automation pushes the total higher. Used units from 2012-2022 trade between $80,000 and $200,000.
02
The QT-450M has C-axis and live tooling for centerline milling. The QT-450MY adds Y-axis with 130 mm of off-center travel for bolt patterns, eccentric holes, and off-center flats. The Y-axis adds $30,000-$50,000 to the price.
03
For many applications, yes. Cross-drilling, tapping, flat milling, keyway cutting, and off-center features all work on the live tooling. But parts requiring heavy 3-axis milling, large pockets, or complex 3D surfacing may still need a dedicated machining center.
04
At 9,200 kg, the QT-450MY requires a reinforced concrete foundation typically 250-350 mm thick. Budget $8,000-$20,000 for foundation preparation depending on existing floor conditions and contractor rates.
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