-
Ball Spline Classification
1、 Classified by lead and size
Type
Characteristic
Miniature ball screw
Suitable for precision micro motion scenarios
Standard ball screw
Lead range of 2-20mm, strong universality, suitable for automated production lines and ordinary machine tools
Large lead ball screw
Lead 20-50mm, used for fast handling systems
Extra large lead ball screw
Lead>50mm, suitable for heavy-duty high-speed scenarios
2、Classified by accuracy level
Type
Processing technology
Grinding grade ball screw
Precision grinding processing
Rolling grade ball screw
Cold rolling forming
P0 grade ball screw
Ultra-precision polishing
3、Classified by structure and function
Type
Characteristic
End cap ball screw
End sealing structure design improves dust resistance performance
Nut rotating ball type
Nut external drive structure, saving axial space
Heavy load ball screw
Using Cr/Mo steel material, the bearing capacity is increased by 200%
Silent ball screw
Optimize the design of the raceway curve and reduce noise
Product Grade
Grade (ISO/JIS)
Any 300mm travel error (μ m)
Standards
C0/C1
≤6
Ultra precision equipment
C3
≤12
high precision machine tool
C5
≤23
CNC equipment
C7/C10
≤50/≥210
General machinery
-
Ball Spline Features
1. High precision transmission
Positioning accuracy: Through precision grinding technology and optimized cyclic structure, the repeated positioning accuracy can reach ± 0.01mm, meeting the micro level control requirements of CNC machine tools, semiconductor equipment, and other devices.
Stability: Pre pressing is used to eliminate gaps (double nuts or spring pre pressing), ensuring no backlash error during continuous movement.
2. Efficient transmission
Low friction loss: The rolling friction design achieves a transmission efficiency of over 90% and reduces energy consumption by 60% compared to traditional sliding screws.
Quick response: With minimal friction resistance, it supports high-speed operation and is suitable for high-speed positioning scenarios in automated production lines.
3. Long lifespan and reliability
Wear resistant material: using alloy steel for quenching, grinding or surface hardening treatment, with strong fatigue resistance and a service life of 5-10 times that of ordinary screw rods.
Sealed protection: The dust collector and waterproof design effectively resist the erosion of dust and moisture, and are suitable for harsh working conditions such as automobiles and injection molding machines.
4. High rigidity load capacity
Structural strengthening: Through pre pressing and reversing optimization, the axial stiffness is increased, which can withstand heavy load impacts (static loads up to hundreds of kilonewtons).
Customized adaptation: Supports variable designs such as heavy-duty and high-speed models to meet differentiated load requirements in industrial robots, aerospace, and other fields.
5. Mute and environmental adaptability
Low noise operation: Special groove design and precision ball guide reduce vibration noise, suitable for sensitive scenarios such as medical equipment and laboratory instruments.
Lubrication optimization: Self lubricating or maintenance free design reduces manual intervention, suitable for clean rooms, food processing and other oil-free environments.
6 Dustproof and corrosion-resistant
Customized dust-proof and corrosion-resistant coating for ball screws, capable of maintaining stable operation in harsh working environments
-
Ball Spline Selection
Nominal diameter (outer diameter):
The outer diameter of the screw directly affects its load-bearing capacity, with larger diameters resulting in higher loads.
Lead (pitch):
The distance that the nut moves in a straight line per revolution of the screw.
Effective itinerary and total length:
Total length=effective travel+nut length+design allowance+support end length+coupling connection length;
Thread length ≥ effective travel+nut length+collision allowance
Load capacity:
Dynamic rated load (Ca): the maximum axial load in motion;
Static rated load (C0a): the maximum load in a static state;
Selection rule: Actual load/Ca ≤ 0.7 to extend lifespan.
Accuracy level: C3, C5, C7
Pre tightening force

-
Ball Spline Application
Precision CNC machine tool
Rapid handling system
Semiconductor equipment
3D printing equipment
industrial robot
-
SFU1605 Ball Screw Performance & Load Capacity Guide
The SFU1605 ball screw is a high-precision linear motion component widely used in CNC machinery, 3D printing, industrial automation, and robotics. Known for its smooth operation and exceptional load-handling capacity, the SFU1605 ball screw provides a reliable solution for applications requiring precise positioning and consistent motion over extended periods.
Precision and Efficiency
The SFU1605 ball screw features a C3-grade precision, ensuring minimal backlash and high positioning accuracy. The C3 tolerance class indicates a moderate-to-high precision level, suitable for industrial machinery where accuracy is critical but ultra-high precision may not be necessary. Its ground ball screw surface reduces friction between the screw and the nut, contributing to smooth linear motion and extending service life. The ball recirculation design minimizes wear, allowing the screw to maintain consistent performance even under continuous operation.Load Capacity and Durability
One of the key advantages of the SFU1605 ball screw is its impressive dynamic and static load capacity. The dynamic load capacity refers to the maximum load the screw can handle while maintaining motion without permanent deformation, while the static load capacity defines the maximum load it can bear when stationary. Thanks to high-quality steel materials and precision machining, the SFU1605 can withstand substantial axial forces, making it ideal for heavy-duty applications in CNC machines, injection molding equipment, and industrial automation systems.Applications
The SFU1605 ball screw is versatile and can be integrated into a variety of machines and systems. In CNC milling and turning machines, it ensures precise positioning of the worktable and spindle. In 3D printers, it allows for smooth and accurate movement of the print head. The screw’s high load capacity and low friction characteristics make it a perfect fit for robotic arms, linear actuators, and automated assembly lines, where both reliability and precision are paramount.Maintenance and Longevity
Proper maintenance is crucial to maximize the performance and lifespan of SFU1605 ball screws. Regular lubrication reduces friction and prevents premature wear. Ensuring that the screw is free from debris and contaminants will maintain smooth operation. Ground ball screws like the SFU1605 are designed for long-term stability, but routine inspection and lubrication will further enhance durability and reduce downtime in industrial applications.Choosing the Right Ball Screw
When selecting a ball screw, consider factors such as load requirements, travel speed, and environmental conditions. The SFU1605 ball screw is suitable for medium-load applications with moderate speed, offering a balance between precision, durability, and cost. Its ground C3 precision provides sufficient accuracy for most CNC machinery, making it a popular choice among engineers and equipment manufacturers.
The SFU1605 ball screw combines high precision, robust load capacity, and reliable performance, making it a cornerstone component for modern machinery. Whether you are upgrading your CNC equipment, designing automated systems, or developing robotics solutions, this ground C3 ball screw ensures smooth linear motion, minimal backlash, and consistent accuracy. Investing in high-quality ball screws like the SFU1605 guarantees long-term efficiency and stability, ultimately improving the productivity and reliability of your machinery. -
SFU1605 C3 Precision Ball Screw Applications
The SFU1605 C3 precision ball screw is a high-performance linear motion component designed for applications requiring accurate, smooth, and reliable movement. Renowned for its precision and durability, the SFU1605 C3 ball screw is widely used across CNC machinery, automation systems, robotics, and 3D printing, making it a critical component in modern industrial operations.
High Precision and Smooth Operation
The SFU1605 C3 ball screw is manufactured with C3 tolerance grade, offering a balance between high precision and cost-effectiveness. The C3 precision level ensures minimal backlash, providing reliable positioning in applications where accuracy is crucial. Ground to a fine finish, the screw shaft guarantees low friction and smooth linear motion. The recirculating ball mechanism reduces wear and ensures consistent performance, even under continuous operation.Key Applications in CNC Machinery
In CNC milling and turning machines, the SFU1605 C3 ball screw plays a vital role in controlling the movement of machine tables, spindles, and slides. Its precise linear motion enables accurate cutting, drilling, and shaping of materials, ensuring high-quality manufacturing outputs. With high load-bearing capacity and excellent repeatability, the ball screw supports both light and medium-duty CNC applications, making it a versatile choice for machine tool designers.Automation and Robotics
The SFU1605 C3 precision ball screw is widely adopted in industrial automation systems and robotic equipment. It enables precise positioning of linear actuators, robotic arms, and conveyor systems, contributing to higher operational efficiency and reduced error rates. In automated production lines, these ball screws ensure consistent motion, allowing machines to maintain speed and accuracy, even under continuous operation. Their durability and low maintenance requirements make them suitable for high-volume industrial environments.3D Printing and Laboratory Equipment
Another common application of the SFU1605 C3 ball screw is in 3D printers and laboratory machinery. The screw provides smooth and precise movement for print heads, slides, and measurement systems. Its low friction and high repeatability are particularly important for applications where microscopic precision is required, such as in additive manufacturing, scientific instruments, and testing equipment.Maintenance and Longevity
To maximize the life of SFU1605 C3 ball screws, proper maintenance is essential. Regular lubrication reduces friction and prevents premature wear, while cleaning the screw and nut of debris ensures consistent performance. Ground ball screws are designed for long-term stability, and with routine inspection and proper care, they can maintain precision and reliability over years of operation.Choosing the Right Application
When selecting the SFU1605 C3 ball screw, consider factors such as load requirements, travel distance, operating speed, and environmental conditions. Its precision, load capacity, and smooth operation make it ideal for CNC machines, automation lines, robotics, and laboratory devices, offering a balance of accuracy, durability, and cost efficiency.
The SFU1605 C3 precision ball screw is a reliable and versatile component for a wide range of industrial and technological applications. From CNC machining and automation systems to robotics and 3D printing, this ground ball screw provides smooth, accurate, and dependable linear motion. Investing in SFU1605 C3 ball screws ensures high performance, minimal maintenance, and enhanced productivity, making it a trusted choice for engineers and manufacturers aiming for precision and efficiency in their operations. -
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.

