SB-20R Type G
CNC Swiss-type Automatic Lathe

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The SB-20R Type G CNC Swiss Lathe is engineered for high-speed, precision machining, perfect for small and complex part production. With its versatile Swiss-type design, this machine supports a wide range of operations, including turning, milling, and drilling, ensuring maximum flexibility and efficiency.

  • Spindle speeds up to 10,000 RPM
  • Supports up to 27 tool positions for enhanced versatility
  • Simultaneous machining with sub-spindle for increased productivity
10,000 RPM | 20 mm Bar Capacity | 6 Axis | 27 Tool Positions
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Lathe

SB-20R Type G lathe Machine Specifications and Accessories Overview

The SB-20R Type G Lathe Machine is equipped with advanced features designed to enhance machining performance and flexibility. This section provides a detailed overview of the machine’s specifications, including its maximum machining diameter of 20mm, multiple tooling options, and high-speed capabilities. Additionally, you’ll find a comprehensive list of standard and optional accessories, such as power-driven attachments, coolant systems, and backworking units, all aimed at optimizing productivity and meeting diverse manufacturing needs. To learn more or to get your custom quote today, contact us and discover how the SB-20R Type G can elevate your operations. 

  • Max. Machining Diameter

    ø20mm (25/32in)

  • Max. Headstock Stroke

    G. B. TYPE
    205mm (8in)

    NON G. B. TYPE
    Bar diameter × 2.5 (max. 50mm) (max. 1-31/32in)

  • Number of Turning Tools

    6 tools (ø12mm) / 7 tools (ø10mm)

  • 4-Spindle Sleeve Holder

    NUMBER OF TOOLS
    Front: 4 tools / Rear : 4 tools

    MAX. DRILLING CAPABILITY
    ø12mm (1/2in)

    MAX. TAPPING CAPABILITY
    M10 × P1.5

  • Power-Driven Attachment – 4-SPINDLE CROSS DRILLING UNIT

    NUMBER OF TOOLS
    Cross Power Driven Att.: 4 tools (ER 16)

    MAX. DRILLING CAPABILITY
    ER 16: ø7mm(9/32in)

    MAX. TAPPING CAPABILITY
    ER 16: M6×P1.0

    SPINDLE SPEED
    ER 16: max.6,000min-1

    DRIVE MOTOR
    1.0kW (continuous) / 1.2kW (5min./30%ED)

  • Power-Driven Attachment – 5-SPINDLE CROSS DRILLING UNIT

    NUMBER OF TOOLS
    Cross Power Driven Att.: 5 tools (ER 11)

    MAX. DRILLING CAPABILITY
    ER 11: ø5mm (3/16in)

    MAX. TAPPING CAPABILITY
    ER 11: M5×P0.8

    SPINDLE SPEED
    ER 11: max.10,000min-1

    DRIVE MOTOR
    1.0kW (continuous) / 1.2kW (5min./30%ED)

  • Power-Driven Attachment – CARTRIDGE TYPE CROSS DRILLING UNIT

    NUMBER OF TOOLS
    Cross Power Driven Att. : 2 tools (ER 11)
    Cartridge type: 3 Pos

    MAX. DRILLING CAPABILITY
    ER 16: 5-Spindle & 5-Spindle High Speed: ø7mm (9/32in)
    ER 11: 5-Spindle: ø6mm; 5-Spindle High Speed: ø5mm

    MAX. TAPPING CAPABILITY
    ER 16: M6×P1.0
    ER 11: M5×P0.8

    SPINDLE SPEED
    ER 16: max. 6,000 min-1
    ER 11: 5-Spindle: max. 8,000 min-1; 5-Spindle High Speed: max. 10,000 min-1

    DRIVE MOTOR
    1.0kw (continuous) / 1.2kw (5min./30%ED)

  • Rapid Feed Rate

    35m/min (X1,Y1,Z1,X2,Z2)

  • Main Spindle Indexing Angle

    C-axis control

  • Main Spindle Speed

    max. 10,000min-1

  • Main Spindle Motor

    2.2kw (continuous) / 3.7kw (10min./25%ED)

  • Coolant Tank Capacity

    180ℓ

  • Dimensions (W × D × H)

    2,070 × 1,177 × 1,760mm
    Center Height – 1,060mm

  • Weight

    1,750kg

  • Power Consumption

    3.7KVA

  • Max. Chucking Diameter

    ø20mm (25/32in)

  • Max. Length For Front Ejection

    80mm (3-5/32in)

  • Max. Parts Projection Length

    30mm (1-3/16in)

  • Back 4-Spindle Unit

    NUMBER OF TOOLS
    4 tools

    MAX. DRILLING CAPABILITY
    Stationary Tool
    ø8mm (5/16in)

    Power-Driven Att.
    ø6mm (15/64in)

    MAX. TAPPING CAPABILITY
    Stationary Tool
    M6 × P1.0

    Power-Driven Att.
    M5 x P0.8

  • Power-Driven Att. Spindle Speed

    Max. 8,000min-1

  • Power-Driven Att. Drive Motor

    0.75kW

  • Sub Spindle Indexing Angle

    C-axis control

  • Sub Spindle Speed

    Max. 9,000min-1

  • Sub Spindle Motor

    0.55kw (continuous) / 1.1kw (15min./40%ED)

  1. CNC unit Fanuc 0i-TD
  2. Operation panel 8.4” color LCD display
  3. Pneumatic unit
  4. Automatic centralized lubrication unit
  5. Coolant level detector
  6. Door interlock system
  7. Broken cutoff tool detector
  8. Parts ejection detector
  9. Drive unit for revolving guide bush
  10. Revolving guide bus unit
  11. Main/Sub collet
  12. C-axis control (Main/Sub)
  13. Spindle clamp unit (Main/Sub)
  14. Tool holder
  15. 4-Spindle cross drilling unit
  16. 4-Spindle sleeve holder
  17. Back 4-Spindle unit
  18. Air purge for revolving guide bush
  19. Air purge for main spindle
  20. Sub spindle air purge unit
  21. Sub spindle air blow unit
  22. Work light
  23. Leakage breaker
  1. Coolant flow detector
  2. Water removal unit
  3. Beacon
  4. Parts conveyor
  5. Parts receptacle in the machine
  6. Parts separator unit A
  7. Main spindle inner tube
  8. 5-spindle cross drilling unit
  9. Cartridge-type 5-spindle cross drilling unit
  10. Cartridge-type 5-spindle high-speed cross drilling unit
  11. Drive unit for power-driven attachment B
  12. Parts ejector (Air cylinder type)
  13. Parts ejector (Spring type)
  14. Parts ejector with guide tube
  15. Parts stopper unit
  16. Coolant unit (6.9MPa/2.5MPa)
  17. Coolant unit signal cable
  18. Coolant unit power cable
  19. Coolant valve
  20. Coolant pipings
  21. Automatic bar feeder interface
  22. Compliant with RS-232C interface
  23. Transformer
  24. Safety relay module version
  25. Transformer CE marking version
  26. Transformer CE marking specifications

SB-20R

Discover the power of the SB-20R Type G CNC Swiss-type Automatic Lathe! Download our brochure to learn about its features and specifications. If you have questions or need more info, just submit your request, and our team will help you. Elevate your production with the SB-20R Type G!

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How Can the SB-20R Type G Improve Your Machining Process?

Process

The SB-20R Type G CNC Swiss-type Automatic Lathe significantly enhances machining processes through its precision, versatility, and efficiency. Capable of handling a maximum machining diameter of 20mm (25/32in), this lathe excels in producing intricate components with exceptional accuracy, supported by its flexible tooling layouts and Guide Bush/Non-Guide Bush switching function for seamless transitions between modes. With a main spindle speed of up to 10,000 RPM and a rapid feed rate of 35m/min, it ensures high-speed operations powered by a robust 2.2kW (continuous) / 3.7kW (10min./25%ED) motor. 

SB-20R Type G CNC Swiss Lathe

Its compact design (2,070 × 1,177 × 1,760mm and 1,750kg) provides space efficiency without sacrificing stability, while the 180ℓ coolant tank guarantees effective cooling during prolonged tasks. Additionally, featuring a fully independent sub-spindle with C axis control, the SB-20R Type G allows for complex multi-axis machining operations, making it an ideal solution for various industries, from medical devices to aerospace and automotive sectors, thereby driving unparalleled performance and adaptability in your machining operations.

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Why Choose Star Swiss-Style Lathes?

Star CNC Machine Tool Corp., a division of Star Micronics Co., Ltd. of Japan, is a global leader in Swiss-type turning machines, known for producing small, complex, and precise metal components. Since 1948, Star CNC has delivered reliable, high-performance lathes that excel in both high-volume production and intricate part fabrication.

Their mission is to develop fast, efficient, and robust machines that meet the demands of today’s 24/7 production environments, with a focus on ergonomics, safety, and environmentally-friendly operations.

AMT Machine Tools Ltd. is the Canadian distributor of Star CNC, offering full access to their advanced lathes and comprehensive support. Explore our Star Swiss-style lathe page or contact us for more information.

Frequently Asked Questions about the SB-20R Type G CNC Swiss Lathe

FAQ

The SB-20R Type G CNC Swiss-type Automatic Lathe is engineered to deliver exceptional versatility and precision in machining operations. With its unique Guide Bush/Non-Guide Bush switching function, this lathe accommodates a wide range of machining tasks, making it an ideal choice for various industries. This FAQ section addresses common inquiries about the SB-20R Type G, including its maximum machining diameter, tooling capabilities, and operational flexibility. Understanding these features will help you maximize the potential of this advanced lathe in your manufacturing processes. If you don’t find your answer here, feel free to contact our experts for personalized assistance and insights tailored to your specific needs!
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What industries is the SB-20R Type G CNC Swiss-type Automatic Lathe suitable for?

The SB-20R Type G is suitable for a variety of industries that require precision machining of small, intricate components. These industries include medical device manufacturing, automotive, aerospace, electronics, and general engineering. Its versatility and precision make it an ideal choice for producing high-quality parts across these sectors.

The maximum machining diameter of the SB-20R Type G is 20mm (25/32in). This capability allows for the production of a variety of small components with precision and efficiency.

Yes, the SB-20R Type G features a unique Guide Bush/Non-Guide Bush switching function. This allows operators to easily switch between guide bush and non-guide bush modes, enhancing flexibility for different machining applications. Contact our specialist for more technical details.

The SB-20R Type G is equipped with impressive spindle speed capabilities:

  • Main spindle speed: Maximum of 10,000 RPM 
  • Sub spindle speed: Maximum of 9,000 RPM 

These high-speed operations facilitate efficient machining of complex parts. Did you download CNC Swiss type automatic lathe brochure? 

The SB-20R Type G can accommodate a variety of tools thanks to its flexible tooling layouts. It features:

  • 6 turning tools (ø12mm) / 7 turning tools (ø10mm) 
  • 4-Spindle sleeve holder: Front: 4 tools / Rear: 4 tools 
  • Power-Driven Attachments:
    • 4-Spindle Cross Drilling Unit: 4 tools (ER 16) 
    • 5-Spindle Cross Drilling Unit: 5 tools (ER 11) 
    • Cartridge Type Cross Drilling Unit: 2 tools (ER 11) 

This flexibility enables endless variations of complex machining tasks, meeting diverse manufacturing needs across multiple industries.

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