Star SW-38
Key Specifications
Rapid Traverse
max bar capacity
max machining diameter
max machining length
main spindle speed
back spindle speed
Overview
The Star SW-38 is a 38mm sliding headstock CNC automatic lathe positioned in Star's SW (Swiss Wide) series, designed to deliver high tooling capacity and operational flexibility for complex parts in the 25-38mm diameter range. The SW series emphasizes maximizing the number of simultaneous tools in cut and the variety of operations achievable within a single machine cycle, making it particularly attractive for parts that would otherwise require multiple setups or post-process secondary operations.
The SW-38's 38mm bar capacity expands the range of complex components addressable with Swiss-type efficiency: larger medical implants, aerospace connectors, and precision industrial components that combine turning, milling, drilling, and threading in demanding sequences. The machine provides a Y-axis as standard, enabling true off-center milling that is essential for flats, hexagons, and keyways on larger-diameter parts without the need for C-axis interpolation compromises.
Star's SW series design philosophy emphasizes gang-tool efficiency combined with live tooling density, giving process engineers broad flexibility in optimizing tool layouts for specific part families. The machine's guide bushing system maintains the precision and surface quality that define Swiss-type machining even at 38mm diameter, ensuring that part quality meets medical and aerospace requirements.
With a Mitsubishi control option available alongside Fanuc, the SW-38 gives shops control platform flexibility to match their existing infrastructure. Star's hydraulic-free design approach on the SW series reduces maintenance overhead and environmental compliance costs, consistent with Star Micronics' design philosophy across its premium product lines.
Full Specifications
| Parameter | Value |
|---|---|
| Max Bar Capacity | 38 mm (1.496 in) |
| Max Machining Diameter | 38 mm (1.496 in) |
| Max Machining Length | 300 mm (11.81 in) |
| Main Spindle Speed | 8,000 RPM |
| Back Spindle Speed | 6,000 RPM |
| Live Tool Speed | 7,000 RPM |
| Number Of Axes | Up to 8 (including Y1, C1, C2) |
| Tool Positions | 24 (including live tools) |
| Y Axis Stroke | ±12 mm |
| Guide Bushing | Yes |
| CNC Control | Fanuc 31i-B5 or Mitsubishi M830 |
| Rapid Traverse Rate | 28 m/min |
| Machine Weight | 3,100 kg (6,835 lb) |
| Power Consumption | 15 kVA |
Strengths & Limitations
Strengths
- [object Object]
- [object Object]
- [object Object]
- [object Object]
- [object Object]
Limitations
- [object Object]
- [object Object]
- [object Object]
- [object Object]
Best For
Frequently Asked Questions
01
Both are premium 38mm Swiss-type lathes with Y-axis capability and multi-axis machining. The SW series emphasizes wide gang tooling with high tooling density and is offered with Mitsubishi control options, while the SR series is built around Star's MCS (Motion Control System) for optimized cycle time coordination. The choice often comes down to control preference and specific tooling layout requirements.
02
A new Star SW-38 ranges from approximately $210,000 to $310,000 depending on axis configuration, tooling package, and control selection. Used SW-38 machines typically sell for $80,000–$150,000 depending on age, hours, and specification.
03
Certain SW-38 configurations support NGB operation, which reduces bar remnant waste for shorter parts. Guide bushing mode remains standard and preferred for precision work and longer parts. Contact Star Micronics' applications team to confirm NGB availability for specific configurations.
04
The SW-38 handles all standard Swiss-type materials: free-machining steel (12L14, 1215), stainless steel (303, 304, 316L), titanium (Ti-6Al-4V), aluminum, and brass. Medical-grade materials including PEEK and cobalt-chrome are also within the machine's capability with appropriate tooling.
05
Mitsubishi M830 control availability depends on the specific configuration and market. Fanuc 31i-B5 is the primary control offering. Shops with specific Mitsubishi requirements should confirm availability with Star Micronics or their regional distributor during the quotation process.
Videos
MTDCNC
Cosmos Group - CNC Machine Tool Solutions
MTDCNC
StarCNCMachineToolCo
Community Discussions
Troubleshooting and problem-solving — Need Help! Star SR38 type B, B-Axis Help - CNCzone
Community discussion — Need Help! G and M codes for Star swiss - CNCzone
Community discussion — program for star swiss type lathe - CNCzone
Comparison and buying advice — Mastercam Swiss Expert vs Esprit - cnczone.com
Community discussion — Programming Swiss Machines : r/Machinists - Reddit
Comparison and buying advice — Star swiss machines vs. Citizen swiss machines :
Community discussion — This is hanging up in the Swiss CNC department. - Reddit
Owner experience and review — Star spindle orientation help : r/Machinists - Reddit
Links to community discussions. Summaries are editorial — visit the original thread for full context.



