Nakamura-Tome WT-300
Key Specifications
Y Travel
Max Turn Length
max turning diameter
swing over bed
travel x1 x2
travel z1 z2
Overview
The Nakamura-Tome WT-300 is a twin-spindle, twin-turret multitasking turning center built for high-volume production of complex parts in a single setup. With opposed spindles and two independent 12-station turrets capable of simultaneous cutting, the WT-300 dramatically reduces cycle times by overlapping operations. The upper turret includes Y-axis capability for off-center milling, drilling, and tapping, while synchronized spindle transfer enables seamless part handoff between main and sub spindle without stopping.
The main spindle delivers up to 15 kW with an A2-6 nose and 3.1-inch bore, spinning to 4,500 RPM. The sub spindle runs at 11 kW with matching speed capability. With 24 milling tool stations available across both turrets and a milling motor rated at 5.5/3.7 kW, the WT-300 handles secondary operations that would otherwise require a separate machining center. X-axis travel is 195 mm (7.68 in) per turret, Z-axis travel is 780 mm (30.71 in), and Y-axis travel on the upper turret is 60 mm (2.36 in).
Nakamura-Tome has built its reputation on rigid machine construction and thermal stability, and the WT-300 reflects that philosophy. The machine is controlled by the Fanuc 31i-B5 with NT SmartX HMI, which simplifies programming of simultaneous multi-turret operations. New machines typically price between $250,000 and $400,000 depending on configuration. The WT-300 competes directly with the Mazak Integrex i-200, Okuma Multus B250II, and DMG Mori NTX 2000 in the mid-size multitasking segment. Specs sourced from Nakamura-Tome published data, Methods Machine Tools, and dealer documentation.
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | 270mm |
| Max Turning Length | 780mm |
| Swing Over Bed | 310 mm (12.2 in) |
| Travel X1 X2 | 195 mm (7.68 in) per turret |
| Travel Z1 Z2 | 780 mm (30.71 in) |
| Y-Axis Travel | 60 mm (2.36 in) upper turret |
| Main Spindle Speed | 4,500 RPM |
| Main Spindle Power | 15 kW (20 hp) |
| Main Spindle Nose | A2-6 |
| Main Spindle Bore | 80 mm (3.1 in) |
| Sub Spindle Speed | 4,500 RPM |
| Sub Spindle Power | 11 kW (15 hp) |
| Milling Spindle Power | 5.5/3.7 kW (7.4/5 hp) |
| Tool Stations | 24 per turret (12 positions x 2 turrets) |
| Milling Tool Stations | 24 |
| Turret Index Time | 0.15 sec (one station) |
| Rapid Traverse X | 20 m/min (787 ipm) |
| Rapid Traverse Z | 24 m/min (945 ipm) |
| CNC Control | Fanuc 31i-B5 with NT SmartX |
| Machine Weight | 8,500 kg (18,739 lb) |
| Distance Between Spindles | max.1,100mm / min.250mm |
| L Bar Capacity | φ65mm |
| R Bar Capacity | φ65mm |
| Chuck Size | 8″ |
| L Spindle Speed | 4,500min-1 |
| L Spindle Drive Motor | 15/11kW, 18.5/15kW(op.), 22/18.5kW(op.) |
| R Spindle Speed | 4,500min-1 |
| R Spindle Drive Motor | 15/11kW, 18.5/15kW(op.) |
| Floor Space | height:2,276mm |
| Width4230mm | width:4,275mm |
Specifications sourced from nakamura-tome.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Twin-spindle, twin-turret architecture enables simultaneous cutting on both spindles, dramatically reducing cycle times on complex parts compared to single-turret machines
- Y-axis milling on the upper turret eliminates secondary operations that would otherwise require transferring parts to a machining center
- Synchronized spindle transfer allows seamless part handoff between main and sub spindle without manual intervention, enabling true done-in-one production
- Nakamura-Tome's reputation for thermal stability and build quality delivers consistent accuracy across long production runs
- NT SmartX control interface simplifies programming of complex multi-turret simultaneous operations, reducing setup time for new jobs
Limitations
- Premium pricing puts the WT-300 significantly above single-turret turning centers, requiring high production volumes to justify the investment
- Twin-turret programming complexity demands experienced operators and programmers, increasing the skill requirements for the shop floor
- Limited Y-axis travel of 60 mm restricts the complexity of off-center milling operations compared to dedicated mill-turn machines with larger Y-axis strokes
- 4,500 RPM maximum spindle speed is moderate compared to some competitors, limiting small-diameter high-speed turning applications
Best For
Frequently Asked Questions
01
New WT-300 machines typically start around $250,000 for a base configuration and can reach $400,000 or more with full Y-axis milling, high-pressure coolant, bar feeder integration, and automation options. Used machines from 2010-2018 trade between $80,000 and $200,000 depending on hours and configuration. Methods Machine Tools is the primary North American distributor.
02
The Integrex i-200 offers a more powerful B-axis milling spindle and larger Y-axis travel, making it stronger for complex milling-intensive parts. The WT-300 counters with twin turrets for simultaneous cutting, which gives it a cycle time advantage on production work where both spindles can be cutting at the same time. The Integrex is better for one-off complex parts; the WT-300 excels at high-volume production.
03
Yes. The WT-300 is commonly paired with bar feeders from LNS, Iemca, or FMB for lights-out production. The twin-spindle design with automatic part transfer means the machine can complete parts from bar stock without operator intervention. Many shops run WT-300 machines overnight with bar feeders and parts catchers.
04
Current WT-300 models ship with the Fanuc 31i-B5 CNC with Nakamura-Tome's NT SmartX human-machine interface. The SmartX interface provides graphical programming support for multi-turret simultaneous operations, making it easier to program complex synchronized cutting sequences. Older models may have the Fanuc 31i-A or 31i-B.
05
The WT-300 accepts bar stock up to 80 mm (3.1 inches) in diameter through the main spindle bore. This covers the most common bar sizes used in production turning of automotive, hydraulic, and medical components.
06
The WT-300 can handle finish turning of hardened materials up to approximately 60 HRC with appropriate tooling, though it is primarily designed as a production turning center rather than a dedicated hard turning machine. For heavy hard turning applications, machines with box-way construction may be more appropriate.
Videos
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