Nakamura-Tome SUPER NTJ-X
Key Specifications
Rapid Traverse
Max Turn Length
max bar capacity
max turning diameter
main spindle speed
main spindle power
Overview
The Nakamura-Tome SUPER NTJ-X is a twin-spindle, twin-turret mill-turn machine with a B-axis milling spindle, representing one of the most capable multi-tasking configurations available for high-volume complex part production. Built on Nakamura-Tome's decades of turning center expertise, the SUPER NTJ-X is engineered for manufacturers who need done-in-one machining of parts that would otherwise require multiple setups across separate turning and milling machines. Competing directly against the Mazak Integrex i-300S, Okuma Multus B300II, and DMG Mori CTX gamma 1250 TC, it targets aerospace, oil and gas, and precision job shops.
The machine features a main spindle delivering 22 kW (30 hp) at up to 4,500 RPM with a 65 mm bar capacity, and an equal-spec sub-spindle that matches bar capacity and power so operations can continue on the second spindle without loss of capability. The B-axis milling spindle swivels +/-120 degrees and runs at 12,000 RPM with 11 kW (15 hp), enabling angled holes, compound contours, and true 5-axis interpolated machining. Upper and lower turrets, each with 12 stations and live tooling, provide two simultaneous cutting paths for dramatically reduced cycle times.
Y-axis travel of +/-60 mm on both upper and lower turrets enables off-center milling and eccentric turning operations across both spindle positions. The Fanuc 31i-B5 five-channel control coordinates simultaneous movements across the upper turret, B-axis spindle, lower turret, main spindle, and sub-spindle — effectively managing five independent cutting operations in a single part cycle. This level of parallelism makes the SUPER NTJ-X particularly effective for parts with turning, cross-drilling, angular features, and backworking content.
Nakamura-Tome's NT Smart Machining suite integrates thermal compensation, tool life management, and chatter suppression to support reliable unattended production. The SUPER NTJ-X is priced in the $600,000 to $900,000 range depending on options and configuration. Methods Machine Tools distributes Nakamura-Tome in North America and provides applications engineering support for complex multi-tasking implementations.
Full Specifications
| Parameter | Value |
|---|---|
| Max Bar Capacity | 65 mm (2.56 in) — main and sub-spindle |
| Max Turning Diameter | 500 mm (19.7 in) |
| Max Turning Length | 750 mm (29.5 in) combined |
| Main Spindle Speed | 4,500 RPM |
| Main Spindle Power | 22 kW (30 hp) |
| Sub Spindle Speed | 4,500 RPM |
| Sub Spindle Power | 22 kW (30 hp) |
| B Axis Range | +/- 120° |
| Milling Spindle Speed | 12,000 RPM |
| Milling Spindle Power | 11 kW (15 hp) |
| Upper Turret Stations | 12 stations with live tooling |
| Lower Turret Stations | 12 stations with live tooling |
| Y Axis Travel | +/- 60 mm (upper and lower turrets) |
| Rapid Traverse Rate | 30 m/min (1,181 ipm) |
| CNC Control | Fanuc 31i-B5 (5-channel) |
| Machine Weight | 14,000 kg (30,865 lb) approx. |
Specifications sourced from nakamura-tome.co.jp — verified 2026-03-28
Strengths & Limitations
Strengths
- Twin-spindle, twin-turret plus B-axis milling spindle provides five simultaneous cutting channels — one of the highest parallelism configurations available in a production mill-turn machine
- Equal main and sub-spindle specs (both 22 kW, 65 mm bar) mean second operations receive the same capability as first operations with no compromise in power or bar capacity
- B-axis with +/-120 degree swivel enables angular hole drilling, compound surface machining, and true 5-axis interpolation in a turning machine format
- Nakamura-Tome's exclusive focus on multi-axis turning results in a purpose-built platform, not a milling machine modified for turning applications
Limitations
- $600,000-$900,000 investment requires substantial high-complexity part volume to justify ROI — best suited to shops running parts that currently require 3+ setups
- Five-channel programming (upper turret, B-axis, lower turret, main spindle, sub-spindle) demands highly skilled CNC programmers and a significant training investment
- Nakamura-Tome's North American service network is smaller than Mazak, DMG Mori, or Okuma, which can lengthen response times for unexpected breakdowns
Best For
Frequently Asked Questions
01
The SUPER NTJ-X adds the B-axis milling spindle on top of the twin-spindle, twin-turret configuration of the standard NTJ. This B-axis spindle swivels +/-120 degrees and enables true 5-axis interpolated machining, angular drilling, and contoured surface milling that a standard turret with live tooling cannot perform. The SUPER designation indicates this enhanced, five-channel simultaneous machining capability.
02
The SUPER NTJ-X can theoretically engage five cutting channels simultaneously: the upper turret on the main spindle, the B-axis milling spindle on the main spindle, the lower turret on the main or sub-spindle, and the sub-spindle as the receiving end for backworking. In practice, the Fanuc 31i-B5 control manages channel coordination to prevent interference, and programmers typically overlap 2-3 channels to achieve 30-50% cycle time reductions on complex parts.
03
Yes, the SUPER NTJ-X accommodates bar stock up to 65 mm (2.56 in) in both main and sub-spindles. Combined with a bar feeder, the machine can run lights-out production of complex parts from bar stock. The sub-spindle parting and backworking capability means parts can be fully completed in a single bar-fed cycle without operator intervention.
04
The SUPER NTJ-X uses the Fanuc 31i-B5 control, which is Fanuc's premium multi-channel turning center control. The 5-channel designation means the control can simultaneously manage five independent motion paths. Nakamura-Tome layers its NT Smart Machining software over the Fanuc platform, adding thermal compensation, tool monitoring, and chatter detection.
05
Methods Machine Tools is the exclusive North American distributor for Nakamura-Tome. Methods provides sales, applications engineering, service, and parts across the United States and Canada. For a machine as complex as the SUPER NTJ-X, Methods' applications engineers play an important role in helping shops develop multi-channel programs and justify the machine's ROI during the evaluation process.
Videos
MachineryValues Inc
ADAMS MACHINERY COMPANY
BENTIVOGLIO 1919
BENTIVOGLIO 1919
Insinööritoimisto Ismo Lindberg Oy
Community Discussions
Community discussion — NAKAMURA-TOME SUPER NTX - Practical Machinist
Community discussion — FS: Many various bolt-on tool holders/blocks for Nakamura lathe
Community discussion — where can I find the tuning for NAKAMURA TOME SUPER NTX 2003A ...
Community discussion — Nakamura with Fanuc 11 - Practical Machinist
Owner experience and review — New machine choices : r/Machinists - Reddit
Troubleshooting and problem-solving — Nakamura Mill/Turn issues : r/Machinists - Reddit
Community discussion — NICE! Made this on a Nakamura-Tome NTY3-150 - Reddit
Options and configuration advice — First time running a program/cutting air on my “new” ‘96 ...What are y’all’s dream shop setups? Here’s mine: : r/MachinistsSmall Twin Spindle Lathe : r/Machinists - Reddit
Links to community discussions. Summaries are editorial — visit the original thread for full context.
Related Machines
Mazak Integrex i-200
Okuma Multus B250II
DMG Mori CTX gamma 2000 TC
DMG Mori NTX 2000
DN Solutions SMX 3100ST
