Nakamura-Tome NTJ-100

$400,000 - $600,000 (new) Updated 2025-03-15

Key Specifications

Max Spindle

5,000min-1

Rapid Traverse

30 m/min (1,181 ipm)

Max Turn Length

678mm

max bar capacity

51 mm (2.0 in)

max turning diameter

175mm

main spindle speed

5,000 RPM

Overview

The Nakamura-Tome NTJ-100 is a multi-tasking turning center with an independent B-axis milling spindle for complex part production in a single setup. The NTJ designation indicates jig-boring and milling capability beyond standard turning.

Dual spindles (main and sub) both deliver 15 kW (20 HP) at 5,000 RPM with C-axis. Bar capacity is 51 mm. The B-axis milling spindle swivels +/- 120 degrees at 12,000 RPM with 7.5 kW, enabling angled holes, contoured pockets, and complex geometry impossible on Y-axis-only machines.

Up to 24 tool stations across lower turrets plus B-axis spindle enable simultaneous cutting operations. Fanuc 31i-B5 control manages multi-channel programming. NT Smart Machining provides thermal compensation and tool monitoring.

New NTJ-100 machines price $400,000-$600,000. Competes with Mazak Integrex j-200, DMG Mori NTX, and Okuma Multus B. Nakamura-Tome's exclusive focus on multi-axis turning delivers refined design details.

Full Specifications

Parameter	Value
Max Bar Capacity	51 mm (2.0 in)
Max Turning Diameter	175mm
Max Turning Length	678mm
Main Spindle Speed	5,000 RPM
Main Spindle Power	15 kW (20 HP)
Sub Spindle Speed	5,000 RPM
Sub Spindle Power	15 kW (20 HP)
C Axis	Both spindles
B Axis	B-axis milling spindle +/- 120 deg
Milling Spindle Power	7.5 kW (10 HP)
Milling Spindle Speed	12,000 RPM
Y Axis Travel	100 mm (+/- 50 mm)
Total Tool Stations	Up to 24
X Axis Travel	195 mm (7.68 in)
Z Axis Travel	550 mm (21.65 in)
Rapid Traverse Rate	30 m/min (1,181 ipm)
CNC Control	Fanuc 31i-B5
Machine Weight	7,000 kg (15,432 lb) approx.
Distance Between Spindles	max.910mm/min.200mm
Bar Capacity	51mm
Chuck Size	6″,(8″*1)
Max Spindle Speed	5,000min-1
Spindle Drive Motor	11/7.5kW
Floor Space	height:2,565mm / width:3,799mm / depth:2,110mm

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

Strengths & Limitations

Strengths

B-axis milling spindle +/- 120 deg enables angled holes and complex geometry Y-axis machines cannot reach
Dual spindles with identical specs provide full machining on both sides
Simultaneous cutting with turrets and B-axis reduces cycle times
Fanuc 31i-B5 is premium multi-axis platform with broad CAM support
Nakamura-Tome's exclusive focus on multi-axis turning ensures refined design
NT Smart Machining with thermal compensation maintains long-run accuracy

Limitations

$400,000-$600,000 is premium -- shops not needing angled machining should consider simpler machines
Multi-channel programming for simultaneous ops requires advanced CAM
7.5 kW milling spindle is limited for heavy milling on hard materials
Nakamura-Tome's dealer network is smaller than Mazak or DMG Mori
51 mm bar capacity restricts to small-to-medium bar work

Best For

Aerospace shops producing parts with angled holes and compound-angle features Medical device companies making implants with multi-angle features Precision contract shops bidding complex multi-feature parts Production environments where Nakamura-Tome reliability justifies the premium Shops upgrading from Y-axis-only mill-turn machines needing B-axis capability Medium-batch complex parts where simultaneous cutting drives profitability

Frequently Asked Questions

01 What does it cost?

$400,000-$600,000 new. Standard config ~$425,000-$500,000. Fully equipped $550,000-$600,000. Used (2018-2023) $225,000-$375,000.

02 What is the B-axis?

Rotary axis allowing the milling spindle to swivel +/- 120 deg, enabling angled holes, compound pockets, and contoured surfaces impossible on machines with only Y/C axes.

03 vs Mazak Integrex j-200?

Both have B-axis milling. Mazak has more powerful milling spindle and SmoothAi CNC. NTJ-100 has Nakamura-Tome's turning expertise and Fanuc 31i. Mazak has larger dealer network.

04 Can it do 5-axis?

Supports 4+1 and simultaneous 4-axis using B, C, and linear axes. Full 5-axis contouring possible through Fanuc 31i-B5 but travel ranges are optimized for turned parts.

05 What CAM software?

Mastercam Mill-Turn, Esprit, GibbsCAM MTM, NX CAM with multi-tasking post-processors.