SFK Miniature Ball Screws C3 Precision China Factory Suppliers

Premium SFK miniature ball screws from a leading China factory. Featuring C3 ground precision, internal circulation, and diameters 4-25mm, our products are ideal for space-limited precision transmission. Contact the top suppliers for high-efficiency motion control.

Share:
  • The SFK series miniature ball screws are engineered for high-precision motion control, featuring an advanced internal circulation design that optimizes space and efficiency. With a compact outer diameter ranging from 4mm to 25mm and a precise lead of 1mm to 4mm, these components are specifically designed for precision transmission scenarios where spatial constraints are critical.

    By integrating high-grade screws, nuts, and precision balls, the system ensures a seamless conversion between rotational and linear motion through minimized rolling friction. This makes the SFK series an ideal choice for milling machines and other high-accuracy industrial equipment requiring stable, smooth, and reliable linear guidance.

    Detailed Parameters

    Product SeriesSFK Miniature SeriesOuter Diameter Range4mm - 25mm
    Lead Range1mm - 4mmPrecision GradeC3 Ground Level
    Circulation TypeInternal CirculationCore ComponentsScrew, Nut, Steel Balls
    ApplicationMilling Machines / Precision ToolsMotion ConversionRotary to Linear
    Model ExamplesSFK0401, SFK0802, SFK1202Friction TypeRolling Friction

    Key Advantages


    Ultra-Compact Design

    With diameters as small as 4mm, it fits perfectly into tight spaces without compromising performance.


    High Efficiency

    Internal circulation reduces energy loss and ensures smooth, consistent motion delivery.


    C3 Precision Ground

    Ground finish ensures high accuracy and minimal backlash for demanding industrial tasks.


    Reduced Friction

    Rolling friction mechanism significantly lowers wear and tear compared to sliding guides.


    Optimized Lead

    Lead options from 1-4mm allow for precise tuning of travel speed and torque requirements.


    Industrial Versatility

    Ideal for milling machines, medical devices, and robotics requiring micro-linear movement.

    Product Gallery

    Management Platforms

    Inventory Control

    Real-time tracking of Ball Screw and Linear Module stock levels.

    Quality Assurance

    Strict C3 ground precision testing for every batch of SFK components.

    Order Monitoring

    End-to-end visibility from manufacturing to global shipment.

    Customization Hub

    Tailored lead and diameter specifications for unique project needs.

    Logistics Network

    Optimized supply chain for fast delivery of miniature bearings and gears.

    Technical Support

    Expert guidance on integrating linear motion pairs into machinery.

    Investment Return Comparison

    FeatureStandard Lead ScrewsSFK Ball Screws
    Friction CoefficientHigh (Sliding)Ultra-Low (Rolling)
    Positioning AccuracyModerateHigh (C3 Precision)
    Energy ConsumptionHigher due to frictionLower / Efficient
    Service LifeShort (High Wear)Long (Low Friction)
    Space EfficiencyBulkyCompact (Miniature)

    Frequently Asked Questions

    Q: What is the difference between a ball screw and a lead screw?

    A ball screw uses recirculating balls to minimize friction and maximize efficiency, whereas a lead screw relies on sliding contact, which results in higher friction and lower precision.

    Q: What does the C3 ground precision signify?

    C3 refers to a specific precision tolerance class achieved through grinding, ensuring minimal deviation and high repeatability in linear positioning.

    Q: Are these miniature ball screws suitable for CNC milling machines?

    Yes, the SFK series is specifically designed for milling machines and other precision equipment where limited space and high accuracy are required.

    Q: How does the internal circulation design benefit the system?

    Internal circulation allows the balls to return to the start position without external guides, reducing the overall footprint and simplifying installation.

    Q: What is the typical lifespan of a miniature ball screw?

    Due to the use of rolling friction, SFK ball screws have a significantly longer lifespan than traditional lead screws, provided they are properly lubricated.

    Q: Can I customize the lead or diameter for my specific application?

    Yes, we offer a range of diameters (4-25mm) and leads (1-4mm) to meet diverse precision transmission requirements in the manufacturing sector.

    Ready to Enhance Your Precision Motion Control?

    Contact Us
  • What is the average lead time?

    Request a Quote

    If you are interested in our products, you can choose to leave your information here, and we will be in touch with you shortly.

    • name*
    • email*
    • phone*
    • message*
Products
Tapered Roller Bearing

Tapered Roller Bearing

Rocket Pinion Gear And Rack

Rocket Pinion Gear And Rack

bearings
Reliable Rack and Pinion Suppliers for Precision Machinery
As a precision machinery manufacturer, we highly appreciate the quality and consistency from this rack and pinion supplier. The gear accuracy is excellent, and the delivery is always on time.
bearings
Carlos Ramirez
Precision Machinery Manufacturing
ball screw manufacturers
Best Rack and Pinion Supplier for Automation Equipment
We’ve been working with this rack and pinion supplier for over 5 years. Their products are durable, precise, and the customer service is outstanding. Highly recommended for anyone in the automation sector.
ball screw manufacturers
Michael Thompson
Automation Equipment Manufacturing
ball screw manufacturers
High-Quality Rack and Pinion for Heavy Machinery
Their rack and pinion systems are exceptionally strong and reliable. As a heavy machinery manufacturer, we rely on their products to ensure the stability and performance of our equipment.
ball screw manufacturers
Diego Fernández
Heavy Machinery Manufacturing
ball screw manufacturers
Top Rack and Pinion Supplier for Robotics Applications
This rack and pinion supplier has been instrumental in supporting our robotics projects. The precision and smooth operation of their components greatly improve our robotic systems’ efficiency.
ball screw manufacturers
Kenji Nakamura
Robotics Manufacturing

Follow Our Blog

Understanding Ball Screws and What is a Ball Screw Used For in Modern Applications

Ball screws are a crucial component in a wide variety of precision motion control systems. They transform rotational motion into linear motion with remarkable efficiency and accuracy. While seemingly simple, their application spans across numerous industries, from aerospace and automotive to medical and manufacturing. Understanding ball screws and their uses is essential for engineers, designers, and anyone involved in building or maintaining machinery that requires precise movement. This article will explore the applications, benefits, and key considerations when choosing a ball screw for your project. At its core, a ball screw consists of a screw shaft and a nut, with ball bearings positioned between the two. As the screw shaft rotates, the ball bearings circulate within grooves on both the screw and the nut, creating a smooth, rolling interface. This rolling action dramatically reduces friction compared to traditional lead screws, resulting in higher efficiency, lower heat generation, and longer lifespan.
Feb 02 . 26

Comprehensive Guide to Antifriction Bearings Types and Effective Applications

Antifriction bearings are essential components in countless machines and systems, enabling smooth, efficient rotation. From automotive applications to industrial machinery, these bearings minimize friction between moving parts, reducing wear and tear and maximizing performance. This article provides a deep dive into the world of antifriction bearings, covering different types, applications, selection criteria, and maintenance. We’ll explore how choosing the right bearing can significantly impact the longevity and efficiency of your equipment. Discover the benefits of high-quality antifriction bearings for your specific needs. There’s a diverse range of antifriction bearings, each designed for specific applications and load requirements. Common types include ball bearings, roller bearings, needle bearings, and tapered roller bearings. Ball bearings are versatile and suitable for high-speed, light-load applications. Roller bearings, including cylindrical, spherical, and needle roller bearings, excel in handling heavier loads. Tapered roller bearings are designed to support both radial and axial loads. Selecting the appropriate type is crucial for optimal performance and longevity.
Mar 03 . 26

Understanding Angular Contact Bearings for High Performance Applications

Angular contact bearings are a critical component in many industrial applications, offering a unique combination of load capacity and speed capabilities. Unlike standard ball bearings, these bearings are designed to handle both radial and axial loads simultaneously. This makes them ideal for high-precision applications where consistent performance and reliability are paramount. Yidi Bearings specializes in providing high-quality angular contact bearings tailored to a wide range of industrial needs. Choosing the right angular contact bearing is crucial for optimal machinery performance and longevity. Angular contact bearings are designed with a raceway angle—meaning the inner and outer ring raceways are displaced relative to each other. This design allows the bearing to support axial loads in one direction. Often, they are used in pairs or sets to accommodate axial loads in both directions. The contact angle, typically ranging from 15 to 45 degrees, dictates the bearing’s axial load capacity; a larger angle providing greater capacity. These bearings are commonly used in applications such as machine tool spindles, pumps, compressors, and gearboxes.
Mar 03 . 26

If you are interested in our products, you can choose to leave your information here, and we will be in touch with you shortly.


3_3ricon1-webp17404468391174113810811 819_2025032815201169958.png

If you are interested in our products, you can choose to leave your information here, and we will be in touch with you shortly.