Star SV-38R
Key Specifications
Max Spindle
Tool Capacity
Rapid Traverse
Spindle Power
Max Turn Length
max bar capacity
Overview
The Star SV-38R is Star Micronics' high-performance Swiss-type CNC automatic lathe for the 38mm bar capacity class, representing the most capable large-format Swiss-type machine in Star's lineup. The SV (High-Performance) designation combined with the R (Revised) suffix indicates a machine designed for the most demanding applications at the upper end of the Swiss-type size range, where heavy cuts on tough materials meet exacting precision requirements.
The SV-38R features a powerful main spindle reaching 8,000 RPM with substantially higher torque than the SR-38J, enabling aggressive material removal on larger-diameter bar stock in stainless steel, titanium, Inconel, and other demanding aerospace and medical alloys. The back spindle reaches 8,000 RPM for matched front and back performance, and the high-speed live tooling at 8,000 RPM enables aggressive milling operations. With up to 10 axes including dual Y-axis capability, the SV-38R provides comprehensive multi-tasking capability.
At 38mm bar capacity, the SV-38R occupies a unique position in the machine tool market. It's larger than most Swiss-type lathes, giving it access to parts that conventional Swiss shops can't handle, while its Swiss-type architecture delivers precision and surface finish quality that conventional CNC lathes struggle to match on longer shaft-type components. The guide bushing supports the bar stock adjacent to the cutting zone, eliminating deflection even on challenging length-to-diameter ratios.
The SV-38R's enhanced rigidity is critical at the 38mm size where cutting forces are substantially higher than on 20mm or 32mm platforms. Star has reinforced the machine structure and slide systems to maintain precision under the heavy loads that large-diameter Swiss work demands. Combined with Star's hydraulic-free design for vibration-free operation and advanced thermal management for dimensional stability, the SV-38R delivers production precision on the most demanding large-format Swiss applications.
Full Specifications
| Parameter | Value |
|---|---|
| Max Bar Capacity | 38 mm (1.50 in) |
| Max Machining Diameter | 38 mm (1.50 in) |
| Max Machining Length | 380 mm (14.96 in) |
| Main Spindle Speed | 8,000 RPM |
| Back Spindle Speed | 8,000 RPM |
| Live Tool Speed | 8,000 RPM |
| Number Of Axes | Up to 10 (including Y1, Y2, C1, C2) |
| Tool Positions | 32 (including live tools) |
| Y Axis Stroke | ±20 mm |
| Guide Bushing | Yes (guide bushing and NGB available) |
| CNC Control | Fanuc 31i-B5 |
| Rapid Traverse Rate | 28 m/min |
| Machine Weight | 4,300kg |
| Power Consumption | 16 kVA |
| Max Turning Diameter | ø38mm (1-1/2in) |
| Max Turning Length | 350mm (13-25/32in) |
| Bar Capacity | 1.5" diameter (1.500) |
| Max Spindle Speed | Max. 7,000min-1 |
| Spindle Motor Power | 7.5kW (continuous) / 11.0kW (10min./25%ED) |
| Tool Capacity | 10 stations |
| Turret Stations | 10 stations |
| Coolant Capacity | 220ℓ |
| Floor Space | 3,320 x 1,440 x 1,865mm |
| Cnc Control | Fanuc Series 31i-B5 |
| Electrical | 9.5KVA |
Specifications sourced from starcnc.com — verified 2026-03-28
Strengths & Limitations
Strengths
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Limitations
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Best For
Frequently Asked Questions
01
A new Star SV-38R ranges from approximately $380,000 to $550,000 depending on configuration. With bar feeder, chip conveyor, and initial tooling, total investment typically reaches $500,000-$700,000. Used SV-38R machines are rare in the market given the specialized nature of 38mm high-performance Swiss work.
02
The SV-38R offers higher torque, enhanced rigidity, more tool positions (32 vs 30), and premium construction compared to the SR-38J. The SR-38J is the better value for standard 38mm Swiss work. The SV-38R is justified for the most demanding applications requiring maximum performance, precision, and capability.
03
Choose the SV-38R when parts have length-to-diameter ratios above 3:1, require sub-0.010mm concentricity, need complete front-and-back machining in a single setup, or involve high volumes where the Swiss-type bar feed and back spindle capability outperform conventional chuck work. Parts shorter than 2:1 L/D are usually more economical on conventional lathes.
04
The SV-38R's high-torque spindle, enhanced rigidity, and vibration-free hydraulic-free design combine to deliver superior performance on titanium, Inconel, and stainless steel. The guide bushing eliminates deflection that would cause chatter on conventional lathes, enabling consistent precision on these demanding materials.
05
Yes. With bar feeder integration, parts collection, and chip management, the SV-38R supports continuous unattended production. The 10-axis capability reduces cycle times by enabling simultaneous operations, and Star's proven reliability ensures high uptime rates in demanding production environments.
Videos
Star Micronics GB
GINDUMAC GmbH
StarCNCMachineToolCo
MTDCNC
Community Discussions
Owner experience and review — Opinions on this brand of mills? : r/Machinists - Reddit
Community discussion — Not my best moment, but could've been much worse. - Reddit
Pricing and buying discussion — Endmill brand opinions : r/Machinists - Reddit
Comparison and buying advice — Star swiss machines vs. Citizen swiss machines :
Links to community discussions. Summaries are editorial — visit the original thread for full context.



