Mazak QT-COMPACT 300M

$100,000 - $160,000 Updated 2026-03-16

Key Specifications

X Travel

210 mm (8.27 in)

Z Travel

550 mm (21.65 in)

max turning diameter

350 mm (13.78 in)

max machining length

500 mm (19.69 in)

swing over bed

620 mm (24.41 in)

bar capacity

80 mm (3.15 in)

Overview

The Mazak QT-COMPACT 300M is the largest model in the QT-COMPACT lineup, combining a 10-inch chuck turning platform with live tooling in a footprint significantly smaller than a full-size Quick Turn 300. The 300 series handles larger-diameter work and heavier cuts while maintaining the compact design philosophy that defines the series.

The main spindle delivers 18.5 kW (25 hp) at 4,000 RPM through an A2-8 spindle nose with 80 mm (3.15 in) bar capacity. The lower RPM ceiling versus the 100 and 200 series reflects the larger chuck and heavier workpieces this machine is designed for — the torque curve is optimized for steel and stainless steel roughing at the 10-inch chuck size. The 12-station BMT turret runs live tools at 6,000 RPM with 5.5 kW (7.4 hp), a significant step up in milling power that handles more aggressive cross-drilling and milling operations.

The work envelope covers 350 mm (13.78 in) maximum turning diameter and 500 mm (19.69 in) maximum machining length with axis travels of 210 mm (X) and 550 mm (Z). Rapids hit 24 m/min on X and 30 m/min on Z. At roughly 4,800 kg (10,582 lb), the QT-COMPACT 300M is heavier than its smaller siblings but still saves meaningful floor space compared to a standard Quick Turn 300.

Running MAZATROL SmoothEz, the machine delivers Mazak's conversational programming interface. The 80 mm bar capacity opens up 3-inch bar stock work, covering a wide range of production parts. New machines price between $100,000 and $160,000, with used units from recent years trading between $50,000 and $95,000. The QT-COMPACT 300M competes with the Doosan Lynx 2600, Haas ST-25, and Okuma GENOS L3000-e. Specs sourced from Mazak published data and dealer documentation.

Full Specifications

Parameter	Value
Max Turning Diameter	350 mm (13.78 in)
Max Machining Length	500 mm (19.69 in)
Swing Over Bed	620 mm (24.41 in)
Bar Capacity	80 mm (3.15 in)
X-Axis Travel	210 mm (8.27 in)
Z-Axis Travel	550 mm (21.65 in)
Main Spindle Speed	4,000 RPM
Main Spindle Power	18.5 kW (25 hp)
Main Spindle Nose	A2-8
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	10 in (A2-8)
Rapid Traverse X	24 m/min (945 ipm)
Rapid Traverse Z	30 m/min (1,181 ipm)
CNC Control	MAZATROL SmoothEz
Machine Weight	4,800 kg (10,582 lb)

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

Strengths & Limitations

Strengths

80 mm bar capacity handles 3-inch bar stock, covering the majority of production turning work without requiring a larger machine
18.5 kW spindle delivers serious roughing power for steel and stainless steel at the 10-inch chuck size
5.5 kW live tool power is the strongest in the QT-COMPACT series, enabling more aggressive milling and drilling operations
Compact footprint saves significant floor space versus a full-size Quick Turn 300 while maintaining comparable work envelope
BMT turret provides excellent rigidity for live tooling operations, improving hole quality and surface finish on milled features
MAZATROL SmoothEz conversational control reduces programming complexity for operators transitioning from manual lathes

Limitations

4,000 RPM spindle speed limits surface speed on small-diameter aluminum work; the 100 and 200 series are better for high-RPM small parts
No Y-axis on the M variant restricts milling to centerline features; off-center work requires a second operation or the MY configuration
At 4,800 kg, the machine requires solid foundation and careful rigging, adding to installation cost
12-station turret fills up on complex programs with multiple live tools; shops running highly complex parts may need creative tooling strategies
Compact design means tighter access to the work zone for manual loading of large chuck work compared to full-size machines

Best For

Job shops handling larger-diameter turning work up to 350 mm that benefit from live tooling to eliminate secondary milling operations Production environments running 3-inch bar-fed operations for fittings, couplings, and adapters in steel and stainless steel Oil and gas component manufacturers machining valve bodies, nipples, and connector housings in production quantities Shops upgrading from basic 2-axis lathes that need milling capability without the footprint of a full-size mill-turn center Contract manufacturers needing a versatile 10-inch chuck lathe that fits into existing floor space without major shop reconfiguration

Frequently Asked Questions

01 What does a new Mazak QT-COMPACT 300M cost?

New QT-COMPACT 300M machines start around $100,000-$120,000 for base configuration with live tooling. Adding high-pressure coolant, chip conveyor, tailstock, and bar feeder interface brings the price to $140,000-$160,000. Used units from 2016-2022 trade between $50,000 and $95,000 depending on hours and options.

02 How does the QT-COMPACT 300M compare to the full-size Quick Turn 300?

The QT-COMPACT 300M offers similar work envelope and bar capacity in a smaller footprint at a lower price point. The full-size Quick Turn 300 typically provides more spindle power (22 kW vs 18.5 kW), faster rapids, and a larger swing over bed. For parts within the compact's work envelope, the performance difference is minimal.

03 Is the QT-COMPACT 300M available with Y-axis?

Yes, the QT-COMPACT 300MY adds Y-axis capability for off-center milling. The Y-axis option adds approximately $15,000-$25,000 to the price. For shops machining parts with flats, hexagons, or off-center holes, the MY configuration eliminates secondary operations and is generally worth the investment.

04 What is the maximum workholding capacity?

The machine accepts a 10-inch (254 mm) hydraulic chuck on an A2-8 spindle nose. Common chuck options include Kitagawa BB-210, SMW Autoblok SIN-S 10, and Rohm Duro-A 254. Through-hole bar capacity is 80 mm (3.15 in), supporting 3-inch bar stock for production work.