Nakamura-Tome SC-450L
Key Specifications
Y Travel
Max Spindle
Spindle Power
Max Turn Length
chuck size
max turning diameter
Overview
The Nakamura-Tome SC-450L is the largest single-turret turning center in Nakamura-Tome's SC lineup, built for heavy-duty precision turning of large-diameter and long workpieces. With a maximum turning diameter of 480 mm (18.90 in) and a maximum turning length of 1,520 mm (59.84 in), the SC-450L handles substantial shaft-type components, large flanges, and heavy chucked parts that exceed the capacity of typical mid-size lathes. The machine accepts 12-inch chucks as standard with 15-inch capability available for special applications.
The main spindle delivers 30/22 kW (40/29.5 hp) at speeds up to 2,500 RPM, providing the torque needed for aggressive roughing on large-diameter steel, cast iron, and alloy components. Bar capacity is 81 mm (3.19 in) standard or 89 mm (3.50 in) optional, handling larger bar stock sizes common in heavy industrial and oil and gas applications. The high-rigidity box-way slide construction on all axes provides the damping characteristics necessary for stable cutting on heavy, cantilevered workpieces where vibration control directly impacts surface finish and tool life.
The SC-450L features optional milling capability with a 3,600 RPM milling spindle delivering 5.5/3.7 kW (7.4/5 hp) for cross-drilling, flat milling, and secondary features. Y-axis travel of +/-60 mm enables off-center milling operations. The machine can be configured with steady rest, tailstock, or sub-spindle depending on the application. Floor space requirements are 5,050 mm width x 2,165 mm depth with a height of 2,185 mm (or 2,531 mm with Y-axis option).
The SC-450L runs on FANUC control and is distributed in North America through Methods Machine Tools. The machine competes with the Okuma LB4000 EX II, Mazak Quick Turn 450, and DMG Mori NLX 3000/1250 in the large-bore, long-bed turning center segment. New machines price between $320,000 and $430,000 depending on milling capability, sub-spindle, and automation options.
Full Specifications
| Parameter | Value |
|---|---|
| Chuck Size | 12″,(15″~*1) |
| Max Turning Diameter | 480mm |
| Max Turning Length | 1,520mm |
| Bar Capacity | 81mm |
| Max Spindle Speed | 2,500min-1 |
| Spindle Motor Power | 30/22 kW (40/29.5 hp) |
| Milling Spindle Speed | 3,600min-1 |
| Milling Spindle Power | 5.5/3.7 kW (7.4/5 hp) |
| Y-Axis Travel | +/- 60 mm (+/- 2.36 in) |
| Turret Stations | 12 |
| CNC Control | FANUC 0i-TF Plus |
| Floor Space | height:2,184.9mm/2,531.3mm(Y-axis)(op.) |
| Machine Height | 2,185 mm (2,531 mm with Y-axis) |
| Machine Weight | 12,000 kg (26,455 lb) |
| Distance Between Centers | 1,752mm |
| Spindle Drive Motor | 30/22kW |
| Milling Drive Motor | 5.5/3.7kW |
Specifications sourced from nakamura-tome.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 480 mm turning diameter and 1,520 mm turning length handle large, heavy workpieces that exceed the capacity of standard mid-size lathes
- 30/22 kW spindle power provides the torque needed for aggressive roughing on large-diameter steel and cast iron components
- High-rigidity box-way construction delivers superior vibration damping for stable cutting on heavy, cantilevered workpieces
- Optional 15-inch chuck capability extends the machine's range for special large-diameter applications
- Y-axis and milling spindle options enable secondary machining operations that eliminate trips to a separate VMC
- Nakamura-Tome's thermal symmetry design and hand-scraped surfaces maintain precision across the extended 1,520 mm bed length
Limitations
- 2,500 RPM maximum spindle speed limits high-speed finishing capability, particularly on smaller diameter work within the envelope
- 5-meter footprint width requires significant floor space, limiting placement options in smaller shops
- 3,600 RPM milling spindle with 5.5 kW power is adequate for secondary operations but not a substitute for a dedicated VMC on heavy milling work
- Price point of $320K-$430K requires consistent large-part workload to justify over smaller, less expensive turning centers
Best For
Frequently Asked Questions
01
New SC-450L machines price between $320,000 and $430,000 depending on configuration. Base machines with tailstock start around $320,000. Adding Y-axis milling, sub-spindle, NC steady rest, and automation options pushes toward $430,000. The 15-inch chuck option adds approximately $10,000-$15,000.
02
The SC-450L is a step up in capacity with 480 mm turning diameter (vs 360 mm), 1,520 mm turning length (vs 1,135 mm), 30 kW spindle power (vs 22 kW), and 12-inch standard chuck (vs 10/12-inch). The SC-300IIL offers higher spindle speed (3,500 vs 2,500 RPM) and a smaller footprint. Choose the 450L for larger, heavier parts; the 300IIL for medium parts requiring higher RPM.
03
Yes, with standard 81 mm and optional 89 mm bar capacity, the SC-450L handles common large bar stock sizes. For ID work on larger bores, the 480 mm swing and generous X-axis travel accommodate boring bars for internal operations on large-diameter workpieces.
04
The SC-450L can be configured with NC tailstock for between-centers work, NC steady rest for supporting long slender shafts during machining, or NC sub-spindle for complete part machining with back-end operations. Configuration is selected at order time based on the primary application.
Videos
Mach4Metal
Nakamura-Tome Global
Headland Technology
The Engineering Technology Group Limited
Insinööritoimisto Ismo Lindberg Oy
