Nakamura-Tome Mill-Turn / Multi-Tasking Machines

Nakamura-Tome WT-300

Est. $250,000 - $400,000 Specs verified 2026-10-03 · nakamura-tome.com Updated 2026-10-03

Image: nakamura-tome.com, Nakamura-Tome

Key Specifications

Max Spindle

4,500 rpm (Ø71 mm: 4,000 rpm; Ø80 mm option: 3,500 rpm; Ø102 mm option: 2,500 rpm)

Spindle Power

15 / 11 kW, 18.5 / 15 kW(optional), 22 / 18.5 kW(optional)

Max Turn Length

780 mm (30.7 in)

max turning diameter

270 mm (10.6 in) (Ø80 mm option: 199 mm (7.8 in))

travel z1 z2

780 mm (30.71 in)

main spindle bore

80 mm (3.1 in)

How much does the Nakamura-Tome WT-300 cost?

Estimated price range

Est.$250,000 - $400,000

Our best estimate for a mill-turn / multi-tasking machine in this class — not a quote from Nakamura-Tome. Configuration moves it a long way.

Overview

The Nakamura-Tome WT-300 is a two-turret, twin-spindle turn-mill center built for large bar: standard capacity is Ø65 mm (2.6 in), and options take it to Ø71 mm (2.8 in), Ø80 mm (3.1 in) or Ø102 mm (4 in). It turns up to 270 mm (10.6 in) in diameter and 780 mm (30.7 in) long, with 780 mm (30.71 in) of Z1/Z2 travel.

The bar option is the main decision, because every step up in bore costs spindle speed. The standard left spindle runs to 4,500 rpm. The Ø71 mm version runs to 4,000 rpm, the Ø80 mm option to 3,500 rpm and the Ø102 mm option to 2,500 rpm. The Ø80 mm option also cuts maximum turning diameter to 199 mm (7.8 in), and chucking moves to 10 in (optional) or 12 in in place of the standard 8 in. A shop whose stock fits the standard Ø65 mm bore gets more speed from the standard spindle than from any large-bore option.

The left spindle drive is 15/11 kW as standard, with 18.5/15 kW and 22/18.5 kW optional. The right spindle also runs to 4,500 rpm, at 15 / 11 kW or an optional 18.5 / 15 kW, so with the base motors both spindles carry the same rating and second operations are not limited by a smaller sub-spindle motor.

The milling spindle for rotary tools is rated 5.5/3.7 kW (7.4/5 hp). That suits cross-drilling, tapping and light milling on bar parts; heavy milling is better done elsewhere. Nakamura-Tome's station row for this model reads both as 24 per turret and as 12 positions on each of the 2 turrets, so the tool count should be confirmed for the configuration being quoted.

Full Specifications

Parameter	Value
Max Turning Diameter	270 mm (10.6 in) (Ø80 mm option: 199 mm (7.8 in))
Max Turning Length	780 mm (30.7 in)
Travel Z1 Z2	780 mm (30.71 in)
Main Spindle Bore	80 mm (3.1 in)
Sub Spindle Speed	4,500 rpm (Ø71 mm: 2,500 rpm)
Sub Spindle Power	15 / 11 kW, 18.5 / 15 kW(optional)
Milling Spindle Power	5.5/3.7 kW (7.4/5 hp)
Tool Stations	24 per turret (12 positions x 2 turrets)
Chuck Size	8 in (Ø80 mm option: (10 in optional), 12 in)
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.)
Width4230mm	width:4,275mm
Max Bar Capacity	Ø65 mm (2.6 in) (Ø71 mm: Ø71 mm (2.8 in); Ø80 mm option: Ø80 mm (3.1 in); Ø102 mm option: Ø102 mm (4 in))
Sub Spindle Bar Capacity	Ø65 mm (2.6 in) (Ø71 mm: Ø102 mm (4 in))
Max Spindle Speed	4,500 rpm (Ø71 mm: 4,000 rpm; Ø80 mm option: 3,500 rpm; Ø102 mm option: 2,500 rpm)
Spindle Motor Power	15 / 11 kW, 18.5 / 15 kW(optional), 22 / 18.5 kW(optional)
Floor Space Required	height:2,276mm

Specifications sourced from nakamura-tome.com — verified 2026-10-03

Strengths & Limitations

Strengths

Bar capacity from Ø65 mm (2.6 in) standard up to Ø102 mm (4 in) with the largest option
780 mm (30.7 in) of turning length and 780 mm (30.71 in) of Z1/Z2 travel
Left spindle drive optional up to 22/18.5 kW for heavier turning
Right spindle matches the left at 4,500 rpm and 15 / 11 kW with the base motors
Two turrets let both spindles work at the same time

Limitations

Large-bore options lower spindle speed, down to 2,500 rpm with the Ø102 mm option
The Ø80 mm option reduces maximum turning diameter to 199 mm (7.8 in)
The milling drive is rated 5.5/3.7 kW (7.4/5 hp), modest for heavy milling
The tool-station row is ambiguous, so confirm the turret tool count before ordering

Best For

Large bar work up to Ø102 mm (4 in) with the option Two-end machining of bar parts up to 780 mm (30.7 in) long Turned parts within 270 mm (10.6 in) diameter Cross-drilling and tapping with rotary tools on two turrets

Frequently Asked Questions

01 What bar sizes can the WT-300 run?

Ø65 mm (2.6 in) as standard, with Ø71 mm (2.8 in), Ø80 mm (3.1 in) and Ø102 mm (4 in) versions. Spindle speed falls as the bore grows: 4,500 rpm standard, 4,000 rpm at Ø71 mm, 3,500 rpm at Ø80 mm and 2,500 rpm at Ø102 mm.

02 Does the WT-300 sub-spindle match the main spindle?

In standard form both run to 4,500 rpm on 15 / 11 kW motors. The right spindle offers an 18.5 / 15 kW option; the left spindle offers 18.5 / 15 kW and 22 / 18.5 kW options, so only the left can be specified with the largest motor.

03 How large a part can the WT-300 turn?

Up to 270 mm (10.6 in) in diameter and 780 mm (30.7 in) long in the standard build. With the Ø80 mm option the maximum turning diameter is 199 mm (7.8 in). Chucks are 8 in as standard; with the Ø80 mm option, 10 in (optional) or 12 in.

04 How does the WT-300 compare with the NTY3-250?

The NTY3-250 has three turrets with Y-axis and up to 72 tool positions, a 225 mm (8.9 in) turning diameter and 5,000 rpm spindles. The WT-300 has two turrets, a larger 270 mm (10.6 in) turning diameter and bar options up to Ø102 mm (4 in), at a lower 4,500 rpm standard speed.