Nakamura-Tome NTJ-100

Est. $400,000 - $600,000 (new) Updated 2026-08-10

Key Specifications

Max Spindle

5,000 min⁻¹ (4,500 min⁻¹ with φ65 mm bar spec)

Max Turn Length

678 mm

max turning diameter

φ175 mm

distance between spindles

max. 910 mm / min. 200 mm

bar capacity

φ51 mm (φ65 mm optional)

chuck size

6″ (8″ optional)

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 Turning Diameter	φ175 mm
Max Turning Length	678 mm
Distance Between Spindles	max. 910 mm / min. 200 mm
Bar Capacity	φ51 mm (φ65 mm optional)
Chuck Size	6″ (8″ optional)
Max Spindle Speed	5,000 min⁻¹ (4,500 min⁻¹ with φ65 mm bar spec)
Spindle Drive Motor	11 / 7.5 kW
Floor Space	Height 2,565 mm / Width 3,799 mm / Depth 2,110 mm

Specifications sourced from www.nakamura-tome.com — verified 2026-08-10

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?

Nakamura-Tome does not publish pricing — Methods quotes per configuration. Main variables: the 65 mm bar option over the standard 51 mm, 8-inch chucking, bar feeder, and tooling for the B-axis head. Used NTJ-100s price on spindle hours, included tooling and B-axis condition rather than model year.

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.