Star CNC Machine Tool
SV-20R
by Star CNC Machine Tool
The SV-20R CNC Swiss Lathe is a high-precision Swiss-type machine built for complex and small part production.
ø20mm (25/32 in), OP: ø23mm
Max. Machining Diameter
205 mm (8 in)
Max. Headstock Stroke
max. 10,000 min⁻¹
Main Spindle Speed


SV-20R Features
Standard features that set this machine apart in demanding manufacturing environments.
Precision & Performance
- Spindle speeds up to 10,000 RPM
- Sub-spindle for simultaneous front and back machining
- Power Driven Attachment
- Rapid Feed Rate
- Main Spindle Indexing Angle
- Main Spindle Speed
- Main Spindle Motor
Machining Capability
- Tool Post Configuration
- Tool
- Sleeve
Built-In Extras
- Accommodates up to 30 tool positions for versatile production
- Max. Machining Diameter
- Max. Headstock Stroke
- Dimension (W x D x H)
- Coolant Tank Capacity
Star CNC SV-20R Technical Details
Complete specifications, standard features, and optional upgrades.
- Max. Machining Diameter
- ø20mm (25/32 in), OP: ø23mm
- Max. Headstock Stroke
- 205 mm (8 in)
- Main Spindle Speed
- max. 10,000 min⁻¹
- Main Spindle Motor
- 3.7 kW (continuous) / 5.5 kW (10min/60%ED)
- Rapid Feed Rate (X, Y1, Z)
- 30 m/min
| Max. Machining Diameter | ø20mm (25/32 in), OP: ø23mm |
| Max. Headstock Stroke | 205 mm (8 in) |
| Main Spindle Speed | max. 10,000 min⁻¹ |
| Main Spindle Motor | 3.7 kW (continuous) / 5.5 kW (10min/60%ED) |
| Rapid Feed Rate (X, Y1, Z) | 30 m/min |
SV-20R Questions
Answers to common questions about the SV-20R.
The SV-20R model offers enhanced capabilities compared to the SV-20, particularly with its Star Motion Control System, which reduces idle time and improves overall efficiency. The SV-20R also features an 8-spindle backworking unit with Y-axis control, providing greater flexibility for simultaneous machining operations. Additionally, the SV-20R includes guide bush and non-guide bush switching, offering more versatility for different types of part production, whereas the SV-20 does not have this feature.
The SV-20R is ideal for aerospace applications, thanks to its multi-axis control and advanced tooling options. The machine’s ability to perform simultaneous machining using the gang-type tool post and 8-spindle backworking unit significantly reduces cycle times for complex aerospace components. The FANUC 31i-B5 CNC control with five-axis capability ensures precision and accuracy, critical for producing intricate and high-tolerance parts required in aerospace manufacturing.
The gang tool configuration in the SV-20R provides faster tool changes and minimal tool setup time, which increases overall efficiency. It accommodates up to 6 tools (16mm) or 7 tools (12mm), enabling complex operations to be performed with high precision. The configuration is particularly beneficial for simultaneous machining, as multiple tools can work together, significantly reducing production time and boosting throughput. Contact our specialist for more technical details.
Yes, the SV-20R is an excellent choice for medical device manufacturing. Its ability to produce complex and intricate parts with tight tolerances makes it ideal for the precision required in medical devices. The machine’s multi-axis control, simultaneous machining capability, and high-speed spindles (up to 10,000 RPM) ensure that it can handle the small, detailed components often used in the medical field.
The 0.01° indexing angle in the SV-20R ensures extremely precise positioning of the tools during secondary operations. This level of accuracy is crucial for maintaining tight tolerances and ensuring consistent part quality, particularly for intricate or complex components. The fine indexing capability also improves repeatability and ensures high-precision machining across multiple parts.
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