Nakamura-Tome NTRX-300

$340,000 - $500,000 Updated 2026-03-16

Key Specifications

Y Travel

125 mm (4.92 in)

Max Turn Length

1,100mm

max turning diameter

640mm

max machining length

580 mm (22.8 in)

travel x1

245 mm (9.65 in)

travel z1

630 mm (24.8 in)

Overview

The Nakamura-Tome NTRX-300 is a dual-spindle, dual-turret multi-tasking machine with a B-axis milling spindle that represents the pinnacle of Nakamura-Tome's approach to compact done-in-one manufacturing. Where many competitors bolt milling capability onto a turning platform, Nakamura-Tome designs the NTRX-300 from the ground up as a balanced multi-tasking machine where turning accuracy, milling performance, and simultaneous operations work in concert rather than as compromises.

The left main spindle delivers 22 kW (30 hp) at 4,200 RPM through a 10-inch chuck with 80 mm (3.15 in) bar capacity. The right sub spindle runs 4,200 RPM with 15 kW (20 hp) and an 8-inch chuck for genuine back-working capability. The B-axis milling spindle hits 10,000 RPM with 15 kW (20 hp) through an HSK-A63 interface, covering a 230-degree range (-30 to +200) with 0.001-degree minimum indexing. A 12,000 RPM option is available.

The lower turret adds 12 stations with driven tool capability at 5,000 RPM and 5.5 kW, enabling simultaneous cutting operations that dramatically reduce cycle times. When the milling spindle works on the main spindle side, the lower turret can simultaneously cut on the sub spindle side—a capability that some competitors lack without paying for an ST-class upgrade.

Axis travels cover 245 mm (X1), 125 mm (Y), and 630 mm (Z1) with maximum turning diameter of 460 mm (18.1 in) and 580 mm (22.8 in) machining length. The machine runs on Fanuc 31i-B5 with NT Smart Guide conversational programming, Nakamura-Tome's proprietary interface that simplifies complex multi-path programming. The standard 24-tool ATC for the B-axis expands to 40 or 80 tools.

Nakamura-Tome machines have a reputation among experienced multi-tasking users as the most reliable and accurate turning-based multitasking platforms in the industry. The NTRX-300 weighs approximately 10,200 kg (22,487 lb). New machines price between $340,000 and $500,000, with used units from 2015-2021 trading between $150,000 and $300,000. Specs sourced from Nakamura-Tome published data, Methods Machine Tools dealer documentation, and verified user reports.

Full Specifications

Parameter	Value
Max Turning Diameter	640mm
Max Machining Length	580 mm (22.8 in)
Travel X1	245 mm (9.65 in)
Y-Axis Travel	125 mm (4.92 in)
Travel Z1	630 mm (24.8 in)
B Axis Range	230° (-30° to +200°)
B Axis Indexing	0.001° minimum
C Axis Rotation	360° continuous (both spindles)
Main Spindle Speed	4,200 RPM
Main Spindle Power	22 kW (30 hp)
Sub Spindle Speed	4,200 RPM
Sub Spindle Power	15 kW (20 hp)
Milling Spindle Speed	10,000 RPM (12,000 RPM optional)
Milling Spindle Power	15 kW (20 hp)
Milling Spindle Taper	HSK-A63
Chuck Size	8″,10″,(12″3),(15″~3)
Bar Capacity	65mm
Upper Tool Capacity	24 tools (40 or 80 optional)
Lower Turret Stations	12 (driven tools at 5,000 RPM)
Lower Turret Power	5.5 kW (7.4 hp)
Rapid Traverse X	30 m/min (1,181 ipm)
Rapid Traverse Z	30 m/min (1,181 ipm)
Machine Weight	10,200 kg (22,487 lb)
CNC Control	Fanuc 31i-B5
Max Turning Length	1,100mm
Distance Between Spindles	max.1,350mm / min.250mm
Distance Between Centers	max.1,225mm / min.125mm
Left Spindle Speed	4,500min-1
Right Spindle Speed	2,500min-1
Left Spindle Motor	15/11kW, 22/18.5kW(op.)
Floor Space	height:2,615mm / width:4,529mm / depth:2,670mm

Specifications sourced from nakamura-tome.com — verified 2026-03-28

Strengths & Limitations

Strengths

Dual turret plus B-axis milling spindle enables true simultaneous cutting on both spindles, reducing cycle times by 30-50% compared to sequential-only machines
Nakamura-Tome's reputation for building the most reliable and accurate turning-based multi-tasking machines in the industry, with exceptional long-term positional accuracy
80 mm bar capacity is larger than most compact multi-tasking competitors (65 mm), handling a broader range of bar-fed production work
NT Smart Guide conversational programming on Fanuc 31i-B5 significantly simplifies complex multi-path programming compared to writing G-code from scratch
HSK-A63 milling spindle taper provides excellent rigidity and repeatability for heavy milling operations within the turning cycle
Lower turret with 5,000 RPM driven tools adds flexible secondary cutting capability without requiring the B-axis milling spindle for every operation

Limitations

10,000 RPM base milling spindle speed is lower than competitors offering 12,000 RPM standard, limiting high-speed finishing on aluminum without the optional upgrade
Nakamura-Tome's North American presence through Methods Machine Tools is strong but smaller than Mazak or DMG Mori, affecting service response in some regions
125 mm Y-axis travel is tighter than some competitors, limiting the size of off-center milling features on larger-diameter parts
NT Smart Guide programming is Nakamura-Tome specific; shops with existing Mazatrol or CELOS expertise face a learning curve when adding NTRX machines to their floor

Best For

Precision manufacturers where long-term accuracy and reliability are the top priorities, and Nakamura-Tome's build quality justifies the premium over budget alternatives Aerospace subcontractors producing complex fittings, valve bodies, and structural components that benefit from simultaneous dual-turret plus milling spindle cutting Medical device companies machining implants and instruments from titanium where Nakamura-Tome's accuracy reduces scrap and post-machining finishing requirements Production shops running bar-fed lights-out operations where the 80 mm bar capacity handles a wide range of part diameters in unattended processing Job shops stepping up from dual-spindle lathes that need B-axis milling capability without sacrificing the simultaneous cutting of a lower turret

Frequently Asked Questions

01 What does a new Nakamura-Tome NTRX-300 cost?

Base configurations with dual spindles and lower turret start around $340,000. Adding the 12,000 RPM milling spindle upgrade, expanded 40 or 80-tool magazine, and high-pressure coolant typically brings the price to $420,000-$500,000. Used NTRX-300 machines from 2015-2021 trade between $150,000 and $300,000 depending on hours, configuration, and condition.

02 How does the NTRX-300 compare to the Mazak INTEGREX i-200S?

The NTRX-300 includes a lower turret standard that the i-200S lacks (you'd need the i-200ST for that). The Mazak counters with faster rapids (50 vs 30 m/min), a faster 12,000 RPM standard milling spindle, and a larger service network. Nakamura-Tome wins on build quality, long-term accuracy, and the included lower turret capability. The NTRX-300 also offers 80 mm bar capacity vs the Mazak's 65 mm.

03 Who distributes Nakamura-Tome in North America?

Methods Machine Tools is the exclusive North American distributor for Nakamura-Tome, with technology centers in Sudbury MA, Chicago, Charlotte, Detroit, Phoenix, San Francisco, and Los Angeles. Methods provides sales, applications engineering, service, and parts support. Their multi-tasking applications team has deep experience with the NTRX series and can assist with turnkey process development.

04 What is NT Smart Guide?

NT Smart Guide is Nakamura-Tome's proprietary conversational programming interface built on the Fanuc 31i-B5 control. It simplifies multi-path programming by guiding operators through setup, tool path creation, and synchronization of multiple spindles and turrets using graphical prompts rather than raw G-code. It's particularly useful for complex parts that require coordinated movements between the B-axis milling spindle, lower turret, and both spindles simultaneously.