Mazak Quick Turn 250M

$120,000 - $180,000 Updated 2026-03-10

Key Specifications

Max Spindle

4,000 RPM

Spindle Taper

A2-8

Tool Capacity

12-position turret

Weight

4,200 kg (9,259 lb)

Rapid Traverse

30 m/min X, 30 m/min Z

Spindle Power

18.5 kW (25 hp)

Overview

The Mazak Quick Turn 250M is a mid-size CNC turning center with live tooling and C-axis that handles done-in-one work without tying up a second machine. Yamazaki Mazak has been building the Quick Turn line for decades, and the 250M sits between the smaller QT-200M and the heavier QT-300M in their turning lineup.

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 on the standard 500U bed. The main spindle puts out 18.5 kW (25 hp) at up to 4,000 RPM through an A2-8 nose. Bar capacity is 65 mm (2.56 in), which covers most production bar stock without needing a spindle liner swap.

The "M" in the name means milling. You get a 12-position turret with live tool stations running up to 5,000 RPM and full C-axis indexing. That's enough to drill cross-holes, tap, mill flats, and cut keyways without pulling the part off the lathe. For shops running turned parts that need secondary milling ops, the QT-250M can cut your setup count in half and free up VMC capacity.

MAZATROL SmoothG runs the control side. It supports conversational programming (describe the part geometry, let the control generate toolpaths) and standard EIA/ISO G-code. You can mix both in the same program. Operators coming from Fanuc controls typically need a few days to adjust, but most find MAZATROL faster for programming turned parts once they get used to it.

The QT-250M competes directly with the Okuma LB3000 EX II and the DMG Mori CLX 350. It typically costs more than a Doosan Lynx 2600 or Haas ST-20Y but brings stronger milling capability to the table. Against the Okuma, it's a close match on specs, and the decision usually comes down to control preference and dealer relationship. Used QT-250M units from the last 5-10 years show up regularly in the $50,000-$90,000 range, making them accessible for shops that can't justify new pricing. Specs sourced from Mazak Corporation published data.

Full Specifications

Parameter	Value
Max Workpiece Diameter	380 mm (14.96 in)
Max Turning Length	541 mm (21.3 in)
Swing Over Bed	675 mm (26.5 in)
Max Spindle Speed	4,000 RPM
Spindle Motor Power	18.5 kW (25 hp)
Spindle Taper	A2-8
Chuck Size	254 mm (10 in)
Tool Capacity	12-position turret
Milling Spindle Speed	5,000 RPM
X Axis Travel	234 mm (9.21 in)
Z Axis Travel	625 mm (24.6 in)
Rapid Traverse Rate	30 m/min X, 30 m/min Z
Positioning Accuracy	±0.005 mm
Repeatability	±0.003 mm
Bar Capacity	65 mm (2.56 in)
Machine Weight	4,200 kg (9,259 lb)
CNC Control	MAZATROL SmoothG
Capacity	Maximum Swing
Main Spindle	Chuck Size
Second Spindle	Chuck Size
Turret	Number of Tools
Feed Axes	Travel (X Axis)

Specifications sourced from virtual.mazakusa.com — verified 2026-03-28

Strengths & Limitations

Strengths

Live tooling with C-axis and 5,000 RPM milling spindle turns it into a done-in-one machine, cutting setup count by 50% on parts that need cross-holes, flats, or tapping
MAZATROL SmoothG conversational programming cuts programming time vs straight G-code, especially on short-run turned parts where CAM overhead matters
675 mm (26.5 in) swing and 380 mm (14.96 in) max turning diameter handle a wider range of parts than most competing 10-inch-chuck lathes
Mazak's global dealer and service network covers most industrial regions with parts availability from 5 support bases in the US alone
12-position turret with BMT tool mounting provides better milling rigidity than VDI-style alternatives at this price point
65 mm bar capacity covers standard production bar stock sizes without a spindle liner change

Limitations

Starting around $120K new, it costs 30-50% more than a comparable Doosan Lynx 2600 or Haas ST-20Y
MAZATROL control is proprietary; operators trained on Fanuc typically need 1-2 weeks to get comfortable, and forum threads confirm EIA/ISO mode sometimes requires a parameter change or purchased option on older variants
Milling spindle at 5,000 RPM can't match dedicated VMC speeds for aluminum work or heavy pocketing
Mazak parts and service pricing reflects their premium market position

Best For

Production shops running 500+ piece lots of turned parts that need cross-holes, flats, or tapping in one setup Aerospace shaft and fitting work requiring tight tolerances held across turning and milling ops without re-fixturing Automotive component manufacturers needing done-in-one capability to reduce WIP and floor space Job shops looking to eliminate secondary operations on parts currently bouncing between a lathe and a VMC Shops stepping up from basic 2-axis lathes to multi-axis turning with milling

Frequently Asked Questions

01 What does a new Mazak Quick Turn 250M cost?

New pricing runs $120,000-$180,000 depending on options. Sub-spindle, tailstock, bar feeder integration, and extra live tool positions all add cost. Used QT-250Ms from the last 5-10 years typically sell in the $50,000-$90,000 range depending on hours and condition.

02 What's the difference between MAZATROL and G-code on the QT-250M?

MAZATROL is Mazak's conversational programming system. You describe part geometry and cutting conditions, and the control generates toolpaths automatically. You can run MAZATROL, straight EIA/ISO G-code, or mix both in the same program. Most operators find MAZATROL faster for turned parts, especially on short-run jobs where CAM programming time eats into the savings.

03 Can the QT-250M replace a lathe and a mill?

For many parts, yes. Cross-drilling, tapping, flat milling, and keyway cutting all work on the QT-250M's live tooling. But the 5,000 RPM milling spindle has limits. Heavy aluminum pocketing, large face mills, and complex 3D surfacing still need a dedicated VMC or a full mill-turn like the Mazak INTEGREX.

04 How does the QT-250M compare to the Okuma LB3000 EX II?

Both are solid mid-size turning centers in the same price range. The Mazak has an edge on milling capability and conversational programming speed. The Okuma offers its OSP control with THINC API integration and strong thermal stability. Most shops choose based on which control their operators already know and which dealer gives them better local support.

05 What's the difference between the QT-250M, QT-250MY, and QT-250MSY?

The 250M has milling and C-axis. The 250MY adds a Y-axis (100 mm / 3.94 in travel) for off-center milling work. The 250MSY adds both Y-axis and a second spindle for backworking. Each step up adds cost and complexity but expands what you can finish in a single setup.

06 What maintenance does the QT-250M need?

Standard turning center maintenance: daily chip removal, weekly coolant checks, monthly way lube and hydraulic fluid levels. Check turret indexing accuracy every 6 months. Mazak recommends annual spindle bearing inspection after 5,000 hours. Keep the SmoothG control firmware updated through your Mazak rep.