BSH Ball Screw Balls Without Flange BSH1605 BSH1204 Ball And Screw C3 C5 C7 Customized

High precision transmission

Adopting a double nut structure and high-precision grinding process, the repeated positioning accuracy can reach ± 0.003mm, suitable for precision fields such as CNC machine tools and semiconductor equipment

Efficient and energy-saving

Transmission efficiency of over 90%, low friction resistance, suitable for high-speed motion scenarios

High rigidity design

By eliminating axial clearance through preloading, the dynamic/static rated load is high,

Diversified configuration

Support right-hand/left-hand threads, customize multiple leads, adapt to flange installation or direct fixation

Numerical Control Machine Tool: Drive Tool Feed

Industrial robots: Welding robots

Medical equipment: CT scanner, examination bed lifting, surgical robot operating arm

Semiconductor equipment: positioning of lithography machine wafer stage

In modern industrial automation and precision machinery, standard components often cannot fully meet the unique requirements of specific applications. BSH ball screws, such as BSH1605 and BSH1204, offer a range of customization options that allow engineers and designers to tailor linear motion systems for optimal performance, efficiency, and reliability. These customizations are particularly valuable in CNC machines, robotics, medical equipment, and automated production lines where precision, speed, and durability are paramount.

Thread Lead and Diameter Options

One of the most important customization parameters is the thread lead and shaft diameter. The lead directly determines the axial travel per revolution of the screw, which affects speed and resolution. By customizing the lead, users can balance linear velocity with positioning accuracy according to the specific requirements of their machine. The BSH series allows customization for various diameters and lead combinations, making it suitable for light-load precision equipment as well as heavy-duty industrial applications.

Accuracy Grade Selection: C3, C5, and C7

BSH ball screws provide multiple accuracy grades—C3, C5, and C7—to match different precision needs.

C3: High precision for micrometer-level applications such as CNC machining centers or semiconductor equipment.

C5: Mid-level precision suitable for general automation systems and medium-load CNC machines.

C7: Standard precision for cost-effective linear motion solutions in industrial automation or feeder systems.
Customization allows users to choose the appropriate grade for each specific application, ensuring optimal performance while controlling cost.

Flange and Mounting Options

Although some BSH ball screws are flange-free, customization options include flange design, mounting type, and shaft length adjustments. Engineers can specify threaded ends, through-holes, or other mounting configurations to integrate the ball screw seamlessly into their system. This flexibility is especially important in applications with space limitations or unique mounting geometries, ensuring a compact and efficient design.

Ball Circulation and Nut Design

The ball nut design and ball circulation path can also be customized to meet performance requirements. Depending on load capacity, speed, and duty cycle, manufacturers can adjust the number of balls, nut length, or preloading mechanism. Preloaded nuts reduce backlash and improve repeatability, which is critical for high-precision CNC or robotic applications. The BSH series supports these variations, allowing tailored performance for both rotational and linear motion needs.

Material and Surface Treatments

Another key customization option is the choice of material and surface treatment. Standard BSH ball screws are made from high-strength alloy steel, but stainless steel or specialized coatings can be applied to improve corrosion resistance, wear resistance, and environmental adaptability. This is especially beneficial in medical, food processing, or chemical environments where contamination and corrosion are concerns. Custom coatings also reduce friction and enhance efficiency, increasing the ball screw’s operational lifespan.

Length and Stroke Customization

BSH ball screws can be manufactured to precise lengths and stroke ranges to match the machine’s travel requirements. Customized lengths eliminate the need for additional linkages or adapters, reducing assembly complexity and improving overall system rigidity. This is particularly advantageous in applications such as gantry systems, linear actuators, and precision measuring devices.

Lubrication and Sealing Options

Proper lubrication and sealing are essential for reducing wear and extending ball screw life. BSH ball screws offer customization in lubrication methods (grease or oil lubrication), as well as dust-proof or sealed nut designs for harsh industrial environments. These options help maintain high performance under continuous operation and in environments with dust, debris, or high humidity.

Application-Specific Customization Benefits

By customizing BSH ball screws, engineers can optimize:

Linear and rotational accuracy

Load capacity and stiffness

Operational speed and acceleration

Longevity and maintenance requirements

For example, a high-speed pick-and-place robot may require a short, preloaded BSH1605 screw with C3 accuracy and stainless steel construction, while a large gantry CNC system might benefit from a longer BSH1204 screw with C5 accuracy and high-load ball circulation.

In conclusion, customization options for BSH ball screws provide engineers with the flexibility to create tailored solutions for diverse industrial motion requirements. By selecting the appropriate lead, diameter, accuracy grade, material, nut design, and mounting configuration, manufacturers can achieve optimal performance, long-term reliability, and cost-effective operation across a wide range of applications.

Ball screws are critical components in precision machinery, enabling accurate linear motion with high efficiency. Within the BSH series, engineers can choose between flanged and flangeless (without flange) ball screw designs, each offering unique advantages for modern automation systems. Understanding the differences helps in selecting the most suitable configuration for CNC machines, robotics, packaging equipment, and industrial automation.

Flanged Ball Screws: Benefits and Applications

Flanged ball screws feature a circular flange integrated with the nut or screw end, which simplifies mounting and alignment. This design provides several advantages:

Ease of installation: The flange allows direct attachment to machine frames or motor assemblies without additional brackets.

Stable positioning: A larger contact surface improves nut stability and reduces angular misalignment.

Load distribution: Flanges help distribute axial and radial loads more evenly, reducing stress concentrations and improving durability.

Flanged ball screws are commonly used in CNC machining centers, vertical lifting mechanisms, and heavy-duty automation applications where stability, rigidity, and precise alignment are critical.

Flangeless Ball Screws: Benefits and Applications

Flangeless or flange-free BSH ball screws are designed for compact spaces and flexible integration. The absence of a flange reduces overall size and allows designers to fit the ball screw into tight assemblies. Key advantages include:

Space efficiency: Ideal for lightweight robots, linear actuators, or automation systems with limited mounting space.

Flexibility in mounting: Custom brackets or couplings can be used to attach the screw in unconventional orientations.

Cost-effectiveness: Flangeless designs require less material and machining, potentially reducing production costs.

Flangeless screws are particularly suitable for robotics, medical devices, laboratory automation, and compact CNC modules where space constraints and modularity are important.

Performance Considerations

While both flanged and flangeless designs can achieve the same accuracy grades (C3, C5, C7), there are performance differences to consider:

Alignment and angular stability: Flanged screws provide better alignment stability under high load or long travel distances.

Vibration resistance: Flanges can reduce vibration and nut wobble, enhancing smooth operation in heavy-duty or high-speed applications.

Customization potential: Flangeless screws allow greater flexibility in customizing end connections, nut design, and mounting options for unique machine geometries.

Choosing Between Flanged and Flangeless Designs

The selection depends on the application’s mechanical requirements, space availability, and integration constraints. For instance:

Heavy-duty CNC machines with long travel axes benefit from flanged ball screws for stability and load distribution.

Compact robotics or automated inspection systems often require flangeless screws to save space and allow custom mounting configurations.

Impact on Maintenance and Longevity

Flanged screws typically allow easier access for maintenance, as the flange can act as a reference point during alignment checks. Flangeless screws may require additional care in ensuring proper alignment during installation, but they can still achieve long service life if correctly integrated and lubricated.

Hybrid Solutions

Some modern BSH systems incorporate hybrid designs, combining aspects of both configurations to optimize performance, space, and ease of installation. For example, a flangeless screw may include a minimal flange or collar for alignment without compromising compactness.

In conclusion, flanged and flangeless BSH ball screws each offer distinct advantages for modern automation applications. Flanged screws excel in heavy-duty, high-stability environments, while flangeless screws are ideal for compact, flexible, and modular designs. Selecting the appropriate design ensures optimal performance, longevity, and integration efficiency in CNC machines, robotics, and automated production systems.