Mazak QUICK TURN 250MY

$135,000 - $200,000 Updated 2026-03-19

Key Specifications

X Travel

234 mm (9.21 in)

Y Travel

100 mm (±50 mm)

Z Travel

625 mm (24.6 in)

Max Turn Length

541 mm (21.3 in)

max turning diameter

380 mm (14.96 in)

swing over bed

675 mm (26.5 in)

Overview

The Mazak QUICK TURN 250MY adds Y-axis milling capability to the proven QT-250 platform, delivering off-center machining on a 10-inch chuck turning center without the full cost of the MSY sub-spindle variant. The 250MY is a popular choice for shops that need Y-axis for milling features above and below centerline but handle backworking through a tailstock or second operation.

The main spindle puts out 18.5 kW (25 hp) at 4,000 RPM through an A2-8 spindle nose with 65 mm (2.56 in) bar capacity. The 12-position turret runs live tools at up to 5,000 RPM, and the Y-axis provides 100 mm of off-center travel for cross-drilling bolt patterns, milling flats at arbitrary angles, cutting hexes, and machining features that C-axis alone cannot reach.

Max turning diameter is 380 mm (14.96 in) over a 675 mm (26.5 in) swing, with 541 mm (21.3 in) of turning length. Axis travels are 234 mm on X, 100 mm on Y, and 625 mm on Z. Rapid traverse rates hit 30 m/min on X and Z. The machine weighs approximately 4,500 kg (9,921 lb), providing good mass for stable interrupted milling cuts.

MAZATROL SmoothG handles programming with both conversational and G-code modes. The Y-axis programming in MAZATROL is straightforward, with built-in cycles for common off-center operations that reduce programming time compared to writing Y-axis toolpaths manually in G-code.

The QT-250MY sits between the simpler QT-250M (no Y-axis) and the full QT-250MSY (Y-axis plus sub-spindle). It competes with the Okuma LB3000 EX II MY, Haas ST-20Y, and DMG Mori NLX 2500 MY. New pricing typically falls between $135,000 and $200,000, with used units from the last 5-8 years trading between $55,000 and $100,000. Specs sourced from Mazak Corporation published data.

Full Specifications

Parameter	Value
Max Turning Diameter	380 mm (14.96 in)
Max Turning Length	541 mm (21.3 in)
Swing Over Bed	675 mm (26.5 in)
Bar Capacity	65 mm (2.56 in)
X-Axis Travel	234 mm (9.21 in)
Y-Axis Travel	100 mm (±50 mm)
Z-Axis Travel	625 mm (24.6 in)
Main Spindle Speed	4,000 RPM
Main Spindle Power	18.5 kW (25 hp)
Main Spindle Nose	A2-8
Live Tool Speed	5,000 RPM
Live Tool Power	5.5 kW (7.4 hp)
Tool Stations	12-position turret
Turret Type	BMT live tooling
Chuck Size	18"
Rapid Traverse X	30 m/min (1,181 ipm)
Rapid Traverse Y	12 m/min (472 ipm)
Rapid Traverse Z	30 m/min (1,181 ipm)
CNC Control	MAZATROL SmoothG
Machine Weight	4,500 kg (9,921 lb)
Max Machining Diameter	Φ14.75″
Max Machining Length	23.8″ / 62.72″

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

Strengths & Limitations

Strengths

Y-axis with 100 mm travel enables off-center milling of bolt patterns, flats, hexes, and eccentric features that C-axis alone cannot reach
18.5 kW spindle and 10-inch chuck handle a wide range of mid-size workpieces in steel, stainless, and cast iron
BMT live tooling at 5,000 RPM provides better milling rigidity and accuracy than VDI-style turret alternatives
Lower cost than the full QT-250MSY by saving the sub-spindle premium while retaining full Y-axis capability
MAZATROL SmoothG with built-in Y-axis cycles reduces programming time for common off-center milling operations
675 mm swing and 380 mm max turning diameter handle a broader range of chucked parts than most 10-inch lathes

Limitations

No sub-spindle means backworking requires a second operation or stepping up to the QT-250MSY
Starting around $135K new, the Y-axis adds $15,000-$25,000 over the base QT-250M
5,000 RPM live tool speed limits surface speed on small-diameter milled features in aluminum
MAZATROL control is proprietary; operators trained on Fanuc need time to adjust to the conversational workflow

Best For

Job shops producing turned parts with off-center features like bolt patterns, eccentric holes, and angled flats Hydraulic manifold and valve body manufacturers machining ports and flats at various positions around turned parts Aerospace fitting and connector manufacturers needing off-center features held to tight tolerances in one setup Shops that need Y-axis capability but do not require a sub-spindle for backworking operations Production environments where Y-axis milling eliminates moving parts to a VMC for secondary operations

Frequently Asked Questions

01 What does a new Mazak QUICK TURN 250MY cost?

New pricing typically falls between $135,000 and $200,000 depending on options. Adding tailstock, high-pressure coolant, chip conveyor, and bar feeder integration pushes the price higher. Used QT-250MY units from the last 5-8 years trade between $55,000 and $100,000.

02 What is the difference between the QT-250M, QT-250MY, and QT-250MSY?

The QT-250M has milling and C-axis. The QT-250MY adds Y-axis (100 mm travel) for off-center milling. The QT-250MSY adds both Y-axis and a sub-spindle for backworking. Each step up adds $15,000-$50,000 in cost but expands what you can finish in one setup.

03 How does the QT-250MY compare to the Haas ST-20Y?

The Haas ST-20Y costs 30-40% less. The Mazak counters with a more powerful spindle (25 HP vs 20 HP), larger bar capacity (65 mm vs 51 mm), BMT tooling for better milling rigidity, and the MAZATROL conversational control. The Mazak justifies the premium for shops doing serious mill-turn work.

04 Is the Y-axis worth the upgrade over the QT-250M?

If any of your parts have off-center features that currently require a second setup on a mill, the Y-axis pays for itself quickly. Even modest production volumes of 100-200 parts per month with off-center features can justify the $15,000-$25,000 Y-axis premium within the first year.