SK-51 Type A
CNC Swiss-type Automatic Lathe

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The SK-51 Type A CNC Swiss Lathe is designed for high-performance, precision machining of large and complex parts. This robust CNC automatic lathe is equipped with advanced features to handle a variety of operations, including turning and drilling, delivering superior efficiency and accuracy for mid-to-large components.

  • Spindle speeds up to 4,000 RPM
  • Capable of handling bar diameters up to 51 mm
  • Equipped with up to 12 tool stations for versatile machining
4,000 RPM | 51 mm Bar Capacity | 8 Axis | 12 Tool Stations
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Lathe

SK-51 Type A CNC Swiss Lathe Machine Specifications and Accessories Overview

The SK-51 Type A CNC Lathe is a high-performance machine designed for precision and versatility in machining parts up to 51mm in diameter. This section provides a detailed overview of its key specifications, including its twin 12-station turrets, 5,000 RPM spindle speeds, and advanced C-axis control for both main and sub spindles.

Additionally, we outline the comprehensive list of standard accessories and optional features, such as hydraulic chucks, coolant systems, and high-pressure coolant pumps, all aimed at optimizing productivity and enhancing machining efficiency for a wide range of applications. To learn more or to get your custom quote today, contact us and discover how the SK-51 Type S can elevate your operations. 

  • Main Spindle

    MAX. MACHINING DIAMETER
    Ø51mm (2in.)

    MAX. MACHINING LENGTH FOR AUTOMATIC EJECTION
    125mm (4-59/64in)

    MAIN SPINDLE SPEED
    Max. 5,000min rpm

    MAIN SPINDLE MOTOR
    7.5kW (continuous)/11kW (15min.)

    MAIN SPINDLE INDEXING ANGLE
    C-axis control

    THROUGH-SPINDLE HOLE DIAMETER
    Ø52.5mm (2-1/16in)

    CHUCKING TYPE
    Hydraulic rotary cylinder

    COLLET CHUCK TYPE
    H-S22/DIN177E

  • Sub Spindle

    MAX. MACHINING DIAMETER
    Ø51mm (2in.)

    MAX. LENGTH FOR FRONT EJECTION
    125mm (4-59/64in)

    MAX. PARTS PROJECTION LENGTH
    80mm (3-5/32in)

    SUB SPINDLE SPEED
    Max. 5,000min rpm

    SUB SPINDLE MOTOR
    7.5kW (continuous)/11kW (15min.)

    SUB SPINDLE INDEXING ANGLE
    C-axis control

    THROUGH-SPINDLE HOLE DIAMETER
    Ø52.5mm (2-1/16in)

    CHUCKING TYPE
    Hydraulic rotary cylinder

    COLLET CHUCK TYPE
    H-S22/DIN177E

  • Path 1 Tool Post

    TYPE
    12-stationed turret

    NUMBER OF TOOLS
    Tool: 20mm (25/32in); Max. 2 tools/station
    Sleeve: Max. 3 counterface sleeves/station
    Power driven tool: Max. 2 tools/station

    POWER DRIVEN TOOL
    Spindle speed: Max. 6,000 min. rpm
    Drive motor: 4.5kW (continuous) 7.5kW (5 min.)
    Max. Drilling Capability: Ø16mm (5/8in)
    Max. Tapping Capability: M12 xP1.75
    Milling: Ø20mm (25/32in)

  • Path 2 Tool Post

    TYPE
    12-stationed turret

    NUMBER OF TOOLS
    Tool: 20mm (25/32/in); Max. 2 tools/station
    Sleeve: Max. 3 counterface sleeves/station
    Power driven tool: Max. 2 tools/station

    POWER DRIVEN TOOL
    Spindle speed: Max. 6,000 min. rpm
    Drive motor: 4.5kW (continuous) 7.5kW (5 min.)
    Max. Drilling Capability: Ø16mm (5/8in)
    Max. Tapping Capability: M12 xP1.75
    Milling: Ø20mm (25/32in)

  • Rapid feed rate

    X1, X2
    20m/min

    Y1, Y2
    15m/min

    Z1, Z2, Z3
    40m/min

    C1, C2 550 rpm

  • Coolant tank

    458ℓ

  • Coolant pump

    1.5kW x 1 for each turret
    0.4kW x 1 for each spindle

  • Dimensions

    2,800mm W x 2,070mm D x 2,130mm H

  • Weight

    6,600kg

  1. CNC unit FANUC 32i-B
  2. Operation panel 15-inch color LCD display
  3. Pneumatic unit
  4. Hydraulic unit
  5. Automatic centralized lubrication unit
  6. Coolant level detector
  7. Door interlock system
  8. Cut-off tool breakage detection function (software)
  9. Cs contouring control (Main/Sub)
  10. Spindle clamp unit (Main/Sub)
  11. Spindle air purge system (Main/Sub)
  12. Pneumatic cylinder type product ejection system (with ejection detection system)
  13. Sub spindle mix blow system (Air & Coolant)
  14. Tool drive unit (Turret type tool post)
  15. Parts catcher
  16. Parts conveyor
  17. Work light
  18. Leakage breaker
  19. Coolant flow detector
  20. Water removal unit
  21. Cut-off tool breakage detection system (mechanical type)
  22. Main/Sub spindle upper air blow (for power chuck)
  23. Foot switch (Main/Sub chuck opening and closing)
  24. Tool setter
  25. Automatic bar feeder interface
  26. LAN/RS232C interface
  1. Hinge Belt Chip Conveyor
  2. Microfiltration Chip Conveyor
  3. Coolant Chiller
  4. Beacon
  5. High Pressure Coolant Pump
  6. Main/Sub chuck (to be selected from the tooling system)
  7. Main spindle inner tube
  8. Power Chuck for Main/Sub Spindle
  9. Collet Chuck for Main/Sub Spindle
  10. Coolant pump extension (2.5 MPa)
  11. Coolant unit (6.9MPa)
  12. Coolant unit signal cable
  13. Coolant system piping 6.9MPa
  14. Transformer CE marking version
  15. Transformer CE marking cable
  16. CE marking version
  17. Power Chuck Type – 6 inch
SK-51 Type A CNC Swiss Lathe
inside view of SK-51 Type A CNC Automatic Lathe

SK-51

Discover the power of the SK-51 Type A CNC 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 SK-51 Type A !

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How Can the SK-51 Type A Improve Your Machining Process?

Process

The SK-51 Type A CNC Lathe can significantly improve your machining process by offering enhanced precision, increased speed, and unmatched versatility. Its advanced design guarantees high precision and accuracy, reducing errors and meeting the tight tolerances required in industries like medical, aerospace, and energy. With a main spindle speed of up to 5,000 RPM and a powerful motor, it delivers fast, efficient machining, enabling faster turnaround times and lowering production costs. The machine’s ability to handle a wide range of part sizes and geometries, combined with its twin 12-station turrets for balanced machining, enhances both productivity and flexibility.

inside view of SK-51 Type A CNC Automatic Lathe

Equipped with the user-friendly Fanuc iHMI control system, the SK-51 simplifies complex tasks, boosting operator efficiency. Additionally, its extensive standard and optional accessories further optimize performance by offering features like automatic lubrication, coolant systems, and parts conveyors. 

The SK-51’s ergonomic design and safety features minimize downtime and ensure a smooth, reliable operation, making it a valuable asset for high-volume production environments.

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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 SK-51 Type A CNC Lathe

FAQ

The SK-51 Type A CNC Lathe is a cutting-edge machine designed to enhance precision and efficiency in modern machining processes. As industries continue to demand higher quality and faster production times, understanding the capabilities and features of this advanced lathe becomes essential for manufacturers and operators alike.
This FAQ section aims to address common inquiries regarding the SK-51 Type A, providing insights into its specifications, functionalities, and applications. Whether you’re a seasoned machinist or new to CNC technology, these questions will help you gain a better understanding of how the SK-51 can optimize your machining operations and meet the evolving needs of your production environment.. 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 SK-51 Type A CNC Swiss-type Automatic Lathe suitable for?

The SK-51 Type A CNC Swiss-type Automatic Lathe is particularly well-suited for industries that demand high-precision machining of complex, small-to-medium-sized parts. These industries include automotive, where tight tolerances are critical for components like fuel injectors and sensor housings, medical, for producing precision surgical instruments and implants, and aerospace, where high-strength, lightweight parts are needed. Additionally, the electronics and micromechanics sectors benefit from the SK-51’s ability to handle intricate components with exceptional accuracy and efficiency.

The main spindle of the SK-51 Type A CNC Lathe has a maximum speed of 5,000 RPM and is powered by a 7.5kW (continuous)/11kW (15 minutes) motor. It also features C-axis control for precise indexing and a through-spindle hole diameter of Ø52.5mm (2-1/16 inches).

The sub spindle of the SK-51 Type A has a maximum speed of 5,000 RPM, powered by a 7.5kW (continuous)/11kW (15 minutes) motor. It also features C-axis control and can handle a maximum parts projection length of 80mm (3-5/32 inches)

The SK-51 Type A CNC Lathe features twin 12-station turrets, each capable of holding up to 2 tools per station, 3 counterface sleeves per station, and 2 power-driven tools per station. Contact our specialist for more technical details.

The power-driven tools on the SK-51 Type A can reach spindle speeds of up to 6,000 RPM, driven by a 4.5kW (continuous)/7.5kW (5 minutes) motor. The maximum drilling capability is Ø16mm (5/8 inches), tapping capability is M12 x P1.75, and milling capability is Ø20mm (25/32 inches). Did you download CNC Swiss type automatic lathe brochure? 

The rapid feed rates for the SK-51 Type A are 20m/min for X1 and X2 axes, 15m/min for Y1 and Y2 axes, and 40m/min for Z1, Z2, and Z3 axes. The C1 and C2 axes have a rapid feed rate of 550 RPM.

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