Nakamura-Tome WT-200II

$400,000 – $580,000 Updated 2026-03-17

Key Specifications

Main spindle bore / bar capacity

65 mm

Max. turning diameter (main)

260 mm

Max. turning length (main)

400 mm

Main spindle speed

5,000 rpm

Main spindle power

22 kW

Main spindle torque

230 Nm

Overview

The Nakamura-Tome WT-200II is a twin-spindle, twin-turret CNC mill-turn machine engineered for the high-efficiency production of complex turned and milled components in a single setup. Nakamura-Tome's WT Series represents the company's core mill-turn offering, and the WT-200II targets medium-sized bar and chuck work with a 65 mm bar capacity and a full complement of live tooling on both turrets.

The WT-200II's dual-spindle architecture — a main spindle and a synchronized sub-spindle — allows complete machining of all part features, front and back, without manual intervention. The main and sub-spindles can operate simultaneously with their respective turrets, meaning that while the main spindle is being turned and milled, the sub-spindle can be drilling or tapping the reverse face of a previously transferred workpiece. This overlapped machining dramatically reduces effective cycle time on complex parts.

Both upper and lower turrets on the WT-200II are equipped with driven tooling, giving the machine exceptional flexibility for simultaneous multi-axis milling, drilling, and threading operations. A Y-axis on the upper turret enables off-center milling and drilling, expanding the machine's capability to prismatic and contoured features that a Y-axis-less turning center cannot produce.

Nakamura-Tome builds the WT-200II with the thermal compensation and precision ballscrew technology found across its Super Series, ensuring long-term dimensional accuracy in demanding production environments. The machine runs on FANUC 32i-B control with NTControl, and its automation-ready design accepts bar feeders and gantry loaders for unattended production. The WT-200II has earned a strong reputation in automotive, aerospace, and precision component industries as a highly productive, reliable platform.

Full Specifications

Parameter	Value
Main Spindle Bore / Bar Capacity	65 mm
Max. Turning Diameter (Main)	260 mm
Max. Turning Length (Main)	400 mm
Main Spindle Speed	5,000 rpm
Main Spindle Power	22 kW
Main Spindle Torque	230 Nm
Sub-Spindle Speed	5,000 rpm
Sub-Spindle Power	15 kW
Upper Turret Stations	12 (driven)
Lower Turret Stations	12 (driven)
Y-Axis Travel	±52.5 mm (upper turret)
Driven Tool Speed	6,000 rpm
Driven Tool Power	5.5 kW
Rapid Traverse (X/Z)	30 / 36 m/min
CNC Control	FANUC 32i-B / NTControl

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

Strengths & Limitations

Strengths

Twin-spindle twin-turret architecture enables overlapped machining for very short cycle times
Y-axis on upper turret allows off-center milling and drilling for prismatic features
Both turrets equipped with driven tooling for maximum simultaneous machining flexibility
Sub-spindle completes all backside operations automatically without operator intervention
Nakamura-Tome's NTControl simplifies programming and tool management for complex multi-axis cycles

Limitations

Higher complexity versus single-turret machines — cycle balancing requires experienced programmers
65 mm bar capacity not suited for large-diameter bar work above 65 mm
Premium price compared to single-spindle mill-turn machines with similar turning envelope

Best For

Automotive powertrain component manufacturers needing high throughput on complex turned parts Hydraulic valve, manifold, and cartridge producers requiring multi-face milling in one setup Precision job shops running complex families of parts with features on both ends and multiple faces Facilities looking to maximize productivity per square foot with high-output single-machine cells

Frequently Asked Questions

01 What is the advantage of the twin-turret design on the Nakamura-Tome WT-200II?

With two turrets, the WT-200II can cut on two tools simultaneously — for example, the upper turret turning the OD while the lower turret drills a hole, or one turret working on the main spindle while the other machines the sub-spindle workpiece. This overlapping cuts effective cycle time on complex parts by up to 40–60% compared to a single-turret machine.

02 Does the Nakamura-Tome WT-200II have a Y-axis?

Yes. The upper turret on the WT-200II includes a Y-axis with ±52.5 mm travel. This enables off-center drilling, flat milling, and contour milling of features that are not on the part's centerline — capabilities that a standard C-axis plus live tools cannot replicate with true linear motion.

03 Can the WT-200II machine the back face of a part automatically?

Yes. The synchronized sub-spindle grips the workpiece after the main spindle completes front operations and the part is parted off. The sub-spindle then presents the back face to the lower or upper turret for complete rear-face machining — turning, drilling, threading — all without operator handling.

04 What bar stock diameter does the Nakamura-Tome WT-200II accept?

The WT-200II accepts bar stock up to 65 mm in diameter through the main spindle bore. This covers the majority of medium-size precision turned components in automotive, hydraulics, and general machining, and is larger than the typical 51–52 mm found on many compact mill-turn machines.

05 How does the WT-200II compare to a single-spindle turning center with live tooling?

A single-spindle turning center with live tooling can only machine one part at a time on one spindle. The WT-200II's twin-spindle architecture simultaneously machines front and rear operations on two different parts. Additionally, the Y-axis and twin-turret configuration provides milling capabilities far beyond what a single turret can offer, making the WT-200II far more suitable for complex, complete parts.