Nakamura-Tome NTRX-300L
Key Specifications
Max Turn Length
max turning diameter
bar capacity
left spindle speed
left spindle power
right spindle speed
Overview
The Nakamura-Tome NTRX-300L is the long-bed variant of the NTRX-300, extending the machining envelope to 1,600 mm (63.0 in) turning length while retaining the full dual-spindle, dual-turret, B-axis milling spindle architecture. Maximum distance of 1,850 mm between spindles accommodates long shafts, propeller shafts, landing gear components, and extended valve bodies.
The left spindle accepts 65 mm standard up to 90 mm optional bar stock at 2,500-4,500 RPM with 15/11 kW (22/18.5 kW optional). The right spindle runs at 2,500 RPM or can be replaced with a tailstock. NC steady rest available for long slender workpieces.
The B-axis swivels 240 degrees (+/-120 degrees), wider than the standard NTRX-300. The 40-tool ATC (expandable to 60, 80, or 120) feeds the B-axis, with long-tool ATC for 3 tools at 65 mm x 450 mm. Max turning diameter 640 mm. Fanuc 31i-B5. New machines $450,000-$650,000.
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | 640mm |
| Max Turning Length | 1,600mm |
| Bar Capacity | 65mm |
| Left Spindle Speed | 4,500/3,500/2,500 RPM by bore |
| Left Spindle Power | 15/11 kW (22/18.5 kW optional) |
| Right Spindle Speed | 2,500 RPM |
| B Axis Range | 240 deg (+/-120 deg) |
| Distance Between Spindles | max.1,850mm / min.300mm (*3) |
| Atc Magazine | 40 tools (60/80/120 optional) |
| Long Tool Atc | Optional, 3 tools (65mm x 450mm) |
| CNC Control | Fanuc 31i-B5 |
| Floor Space | height:2,615mm / width:5,440mm / depth:2,670mm |
| Distance Between Centers | max.1,725mm / min.175mm (*4) |
| Chuck Size | 8″,10″,(12″*5),(15″~*5) |
| L Spindle Speed | 4,500min-1 |
| R Spindle Speed | 2,500min-1 |
| L Spindle Drive Motor | 15/11kW, 22/18.5kW(op.) |
Specifications sourced from nakamura-tome.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 1,600 mm turning length for long shafts and landing gear
- 240-degree B-axis swivel for compound-angle features
- 40-120 tool ATC plus long-tool ATC for deep-hole boring
- NC steady rest for long slender workpiece support
- 90 mm optional bar capacity
- Nakamura-Tome build quality for long-shaft accuracy
Limitations
- $450,000-$650,000 requires significant volume
- 5,440 mm width requires substantial floor space
- 2,500 RPM right spindle is low for finishing
- Smaller North American service network
Best For
Frequently Asked Questions
01
Start $450,000, reach $650,000 loaded. L commands $50,000-$100,000 premium over standard NTRX-300.
02
1,600 vs 580 mm turning, 1,850 mm between spindles, 240 vs 230-deg B-axis, 40 vs 24-tool ATC, 640 vs 460 mm max turning.
03
Sub-spindle or tailstock available. NC steady rest also available.
04
Up to 3 tools at 65 mm x 450 mm for deep-hole boring.
Videos
The Engineering Technology Group Limited
Nakamura-Tome Global
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Cutting CNC
Cutting CNC
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