Nakamura-Tome SC-300II

$250,000 - $350,000 Updated 2026-03-11

Key Specifications

X Travel

232.5 mm (9.15 in)

Y Travel

±60 mm (±2.36 in)

Z Travel

635 mm (25 in)

Max Spindle

6,000 RPM

Weight

9,000 kg (19,842 lb)

Spindle Power

22.4 kW (30 hp)

Overview

The Nakamura-Tome SC-300II is a multi-axis CNC turning center built for shops that need to complete complex parts in a single setup. With a 12-inch main chuck, 8-inch sub-spindle, Y-axis milling capability, and a 24-position turret, this machine is engineered to eliminate second-op work on parts that would otherwise bounce between a lathe and a mill. Nakamura-Tome has built a reputation for precision and reliability in the Japanese machine tool market, and the SC-300II represents their mid-range multi-tasking platform.

The main spindle delivers 22.4 kW (30 hp) with a maximum speed of 6,000 RPM, while the sub-spindle handles part pickup and back-end machining at comparable speeds. The milling spindle reaches 6,000 RPM with 7.5 kW of power — enough for cross-drilling, milling flats, and cutting keyways without moving the part to a second machine. Y-axis travel of ±60 mm (±2.36 in) enables off-center milling operations that would be impossible on a standard 2-axis lathe.

X-axis stroke is 232.5 mm (9.15 in) and Z-axis stroke is 635 mm (25 in), with a maximum turning diameter of 360 mm (14.17 in). Bar capacity through the spindle is 89 mm (3.5 in), which handles common bar stock sizes for production turning. The 24-position turret (12-station with half-indexing) provides ample tool capacity for complex multi-operation parts. Massive box-way slides on all axes deliver the rigidity needed for interrupted cuts and heavy stock removal.

At approximately 9,000 kg (19,842 lb), the SC-300II is a substantial machine. Nakamura-Tome is distributed in North America through Methods Machine Tools, which provides sales, service, and applications support. The SC-300II competes with machines like the Mazak Quick Turn 250MSY and DMG Mori NLX 2500/700 in the sub-spindle multi-tasking lathe category. New machines typically price in the $250,000-$350,000 range, with used 2018-2020 models trading around $150,000-$200,000.

Full Specifications

Parameter	Value
Max Turning Diameter	360 mm (14.17 in)
Max Turning Length	635 mm (25 in)
Main Chuck Size	305 mm (12 in)
Sub Spindle Chuck Size	203 mm (8 in)
Max Spindle Speed	6,000 RPM
Spindle Motor Power	22.4 kW (30 hp)
Spindle Nose	A2-8
Bar Capacity	89 mm (3.5 in)
X-Axis Travel	232.5 mm (9.15 in)
Z-Axis Travel	635 mm (25 in)
Y-Axis Travel	±60 mm (±2.36 in)
Milling Spindle Speed	6,000 RPM
Milling Spindle Power	7.5 kW (10 hp)
Turret Stations	24 positions / 12 stations (half-indexing)
Machine Weight	9,000 kg (19,842 lb)
CNC Control	Fanuc 0i-TF Plus

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

Strengths & Limitations

Strengths

Sub-spindle and Y-axis milling capability eliminates second-op work, reducing total cycle time and handling on complex parts
12-inch main chuck and 89 mm bar capacity handle a wide range of work including larger bar stock and chucked parts
Box-way construction on all axes provides superior rigidity for interrupted cuts and heavy stock removal
24-position turret (12-station half-indexing) provides ample tool capacity for complex multi-operation parts
Nakamura-Tome's reputation for long-term precision and reliability — these machines hold tolerances for years
9,000 kg machine weight delivers vibration damping that lighter linear-way competitors can't match

Limitations

Price point of $250K-$350K is significantly higher than simpler 2-axis lathes — requires multi-tasking workload to justify
6,000 RPM main spindle is adequate but not class-leading; competitors like the Mazak QT-250MSY offer higher speeds
Nakamura-Tome parts and service through Methods Machine Tools may have longer lead times than Haas or Mazak direct networks
Milling spindle at 7.5 kW is adequate for secondary operations but not a replacement for a full VMC on heavy milling work
Complex multi-axis programming requires skilled operators and capable CAM software — not a beginner's machine

Best For

Production shops running complex turned parts with cross-holes, flats, and keyways that currently require two or more setups Medical device manufacturers producing surgical instruments and implant components requiring tight tolerances and complete machining Aerospace subcontractors machining complex shafts, fittings, and connectors from bar stock in a single setup Automotive suppliers running high-volume turned and milled parts with sub-spindle part pickup for back-end machining Shops looking to consolidate a lathe and a mill into one machine to reduce floor space and work-in-process inventory

Frequently Asked Questions

01 What does a new Nakamura-Tome SC-300II cost?

New SC-300II machines typically price between $250,000 and $350,000 depending on configuration and options. Used 2018-2020 models trade in the $150,000-$200,000 range. The price reflects the multi-axis capability with sub-spindle, Y-axis, and live tooling.

02 How does the SC-300II compare to the Mazak Quick Turn 250MSY?

Both are multi-axis turning centers with sub-spindle and Y-axis milling. The Nakamura-Tome is known for box-way rigidity and long-term precision retention, while the Mazak offers the SmoothG control and a broader dealer network. The SC-300II has a larger 12-inch chuck versus the Mazak's 10-inch, giving it more capacity for larger workpieces.

03 What control does the SC-300II use?

The SC-300II runs on a Fanuc 0i-TF Plus control, which is industry-standard and widely supported. Most CAM software generates code for Fanuc controls without issue, and most operators have Fanuc experience.

04 Can the SC-300II replace a separate lathe and mill?

For many parts, yes. The sub-spindle, Y-axis, and live tooling let you complete complex parts in a single setup. However, the 7.5 kW milling spindle has limits — if your parts require heavy milling operations, you may still need a dedicated VMC for those jobs.