Nakamura-Tome NTY3-250
Image: nakamura-tome.com, Nakamura-Tome
Key Specifications
Max Spindle
Tool Capacity
Spindle Power
Max Turn Length
max turning diameter
left spindle
How much does the Nakamura-Tome NTY3-250 cost?
Estimated price range
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 NTY3-250 is the largest-bar member of the NTY3 family: a turn-mill center with left and right spindles, 3 turrets with Y-axis and up to 72 tool positions. The main spindle takes 65 mm (2.6 in) bar as standard on an 8 in chuck and runs to 5,000 rpm on an 18.5 / 11 kW motor. Maximum turning diameter is 225 mm (8.9 in).
Its turning length is not one figure but two. The upper turret reaches 310.5 mm (12.2 in), the lower turret 905.5 mm (35.6 in). In practice long shafts are turned from below, while the upper turret works the shorter features near the chuck, so a process plan for a long part should be built around the lower turret.
The two spindles are not identical. The right spindle carries a 6 in chuck and 51 mm (2 in) bar as standard, with the same 18.5 / 11 kW and 5,000 rpm as the left. Options lift main-spindle bar capacity to 71 mm (2.8 in) or 80 mm (3.1 in), and the right spindle to 65 mm (2.6 in) or 71 mm (2.8 in). A High Torque specification caps the main spindle at 4,000 rpm, a 26 / 22 kW left-spindle motor is optional, and the Ø71 mm option runs to 3,500 rpm. With the Ø80 mm option, maximum turning diameter is listed as 191 mm (7.5 in).
Rotary tools have a 5.5/3.7 kW milling drive rated at 6,000 RPM, which suits drilling, tapping and milling on bar-size parts rather than high-speed small-tool work. The NTY3-150V, by contrast, lists 7.5/3.7 kW at 10,000 RPM, a 6,000 rpm standard spindle and 51 mm (2 in) standard bar, so the NTY3-250 trades spindle speed and tool speed for bar size and reach. The machine occupies 4,900 × 2,580 × 2,395 mm (W × D × H).
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | 225 mm (8.9 in) (Ø80 mm option: 191 mm (7.5 in)) |
| Max Turning Length | Upper Turret：310.5 mm (12.2 in) / Lower Turret：905.5 mm (35.6 in) |
| Left Spindle | 18.5/11 kW at 5,000 RPM (26/22 kW opt) |
| Right Spindle | 18.5/11 kW at 5,000 RPM |
| Turrets | 3 with Y-axis |
| Tool Capacity | Up to 72 |
| Milling | 5.5/3.7 kW at 6,000 RPM |
| Chuck Size | 8 in |
| R Spindle Speed | 5,000min-1 |
| R Spindle Drive Motor | 18.5/11kW |
| Max Bar Capacity | 65 mm (2.6 in) (Ø65 mm(op.R): 71 mm (2.8 in)(op.); Ø71 mm option: 80 mm (3.1 in)(op.)) |
| Sub Spindle Bar Capacity | 51 mm (2 in) (Ø65 mm(op.R): 65 mm (2.6 in)(op.); Ø71 mm option: 71 mm (2.8 in)(op.)) |
| Sub Spindle Chuck Size | 6 in |
| Max Spindle Speed | 5,000 rpm, 4,000 rpm(op.High Torque specification.) (Ø71 mm option: 3,500 rpm) |
| Sub Spindle Speed | 5,000 rpm (Ø65 mm(op.R): 5,000 rpm, 4,000 rpm(op.High Torque specification.)) |
| Spindle Motor Power | 18.5 / 11 kW,26 / 22 kW(optional) |
| Sub Spindle Power | 18.5 / 11 kW |
| Floor Space Required | 4,900 × 2,580 × 2,395 mm (W × D × H) |
Specifications sourced from nakamura-tome.com — verified 2026-10-03
Strengths & Limitations
Strengths
- 65 mm (2.6 in) bar on the main spindle as standard, with options to 71 mm (2.8 in) or 80 mm (3.1 in)
- The lower turret reaches 905.5 mm (35.6 in) of turning length for long shafts
- Three turrets with Y-axis and up to 72 tool positions
- Left and right spindles both rated 18.5 / 11 kW at 5,000 rpm, with a 26 / 22 kW left-spindle motor optional
- 8 in main chuck as standard
Limitations
- The upper turret reaches only 310.5 mm (12.2 in), so long-part features fall to the lower turret
- The milling drive is 5.5/3.7 kW at 6,000 RPM, slower than the 10,000 RPM listed for the NTY3-150V
- Larger bar options lower spindle speed: 4,000 rpm in the High Torque specification and 3,500 rpm with the Ø71 mm option
- The right spindle takes a 6 in chuck and 51 mm (2 in) bar as standard, smaller than the main spindle
- With the Ø80 mm option, maximum turning diameter drops to 191 mm (7.5 in)
Best For
Frequently Asked Questions
01
Because the turrets reach differently. The upper turret covers 310.5 mm (12.2 in) of turning length and the lower turret 905.5 mm (35.6 in). Long parts are therefore turned with the lower turret, and a cycle that needs the upper turret on a long part should be checked against the shorter reach.
02
The main spindle takes 65 mm (2.6 in) as standard, with options for 71 mm (2.8 in) and 80 mm (3.1 in). The right spindle takes 51 mm (2 in) as standard, with options for 65 mm (2.6 in) and 71 mm (2.8 in). Larger bores reduce speed: the Ø71 mm option runs to 3,500 rpm.
03
In speed and standard power, yes: both are 18.5 / 11 kW at 5,000 rpm. They differ in chuck and bar size. The left spindle has an 8 in chuck and 65 mm (2.6 in) bar, the right a 6 in chuck and 51 mm (2 in) bar. Only the left spindle lists a 26 / 22 kW option.
04
Both turn 225 mm (8.9 in) in diameter with three Y-axis turrets and up to 72 stations. The NTY3-150V runs faster, 6,000 rpm standard and a 10,000 RPM milling motor, on 51 mm (2 in) standard bar and 685 mm (27 in) of turning length. The NTY3-250 takes bigger bar, 65 mm (2.6 in) standard, at 5,000 rpm, and its lower turret reaches 905.5 mm (35.6 in).
05
The listed footprint is 4,900 × 2,580 × 2,395 mm (W × D × H). Add room for access, chip handling and any bar feeder when planning the installation, since the footprint figure covers the machine only.
Videos
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