DLY Ball Screw Patent Innovations

In precision transmission systems, a ball screw is not only judged by its diameter, lead or accuracy grade. For machine builders and automation buyers, long-term performance also depends on lubrication protection, sealing structure, axial rigidity, load capacity, noise control and manufacturing stability.

DLY's ball screw patent work is closely connected with these practical engineering requirements. Instead of treating patents as isolated certificates, this article explains how representative DLY ball screw innovations relate to real purchasing concerns such as service life, dust protection, smooth movement, heavy-load operation and precision positioning.

DLY Ball Screw Patent Directions at a Glance

The following table summarizes the main ball screw patent directions covered in this article and explains what each design means from a buyer's point of view.

Lubrication Protection for Left-Handed Ball Screws

Lubrication is one of the most important factors affecting ball screw service life. In many machines, the oil port is exposed to dust, metal particles or cutting debris. Once debris enters the oil port or the ball nut, lubrication may become uneven and the balls may no longer circulate smoothly.

DLY's left-handed ball screw with oil groove focuses on this practical issue. The design uses an oil groove and protective structure around the lubrication area to help reduce the risk of oil port blockage and support more even oil distribution between the balls and raceway.

Left-handed ball screw with oil groove structure for lubrication protection.

For buyers, the value is not only the oil groove itself. The more important point is that DLY pays attention to the real failure points that appear during long-term use, especially in CNC equipment, automated production lines and transmission mechanisms where lubrication stability affects accuracy and maintenance frequency.

Sealed Low-Torque Design for Cleaner Motion

In precision equipment, dust protection and motion resistance are closely related. If dust enters the thread or oil hole, the ball screw may run less smoothly, lubrication may become less effective, and long-term wear may increase. This is especially important for equipment that requires stable movement and cleaner operating conditions.

The left-handed, low-torque, high-precision sealed ball screw design is developed around sealing and smooth transmission. Its purpose is to help protect the thread and lubrication area while reducing unnecessary running resistance. For applications such as CNC machines, automated inspection equipment, semiconductor equipment and medical devices, this type of structural thinking is directly connected with reliability.

Sealed ball screw structure designed for dust protection and smoother transmission.

When selecting a ball screw for a cleaner or more sensitive machine environment, buyers should not only compare accuracy grade. Sealing, lubrication access, nut structure and installation environment should also be checked before confirming the final specification.

Heavy-Duty Rolled Ball Screw for High-Load Equipment

Heavy-load ball screw applications usually face different challenges from ordinary positioning axes. Large thrust, frequent load changes, longer operating time and higher friction can all affect heat generation, wear and service life. In these conditions, the nut structure, raceway design and lubrication method become more important.

DLY's heavy-duty rolled ball screw patent direction focuses on improving the structural suitability of rolled ball screws for high-load operating conditions. The design is intended to support better load capacity, reduce friction-related problems and improve reliability in industrial machinery.

Heavy-duty rolled ball screw structure for high-load industrial applications.

This direction is relevant for large CNC machines, lifting mechanisms, pressure equipment, heavy automation systems and other machines where the ball screw must carry higher force while maintaining stable linear motion. Buyers can also view DLY's High Load Ball Screw page for product-related information.

High Transmission Accuracy and Rigidity

For precision machines, axial clearance and insufficient rigidity may lead to positioning errors, unstable feeding or reduced repeatability. A high-precision ball screw structure should therefore pay attention to the relationship between the screw shaft, nut, raceway, balls and dust protection.

DLY's high-transmission-accuracy ball screw design focuses on reducing clearance-related issues and improving the stability of the transmission structure. This is especially valuable for equipment that requires accurate feeding, stable movement and long-term positioning consistency.

High-transmission-accuracy ball screw structure for precision motion systems.

This patent direction is closely related to applications such as CNC feed axes, industrial automation, precision inspection instruments and equipment requiring stable repeat positioning. When buyers confirm this type of ball screw, DLY recommends checking the required accuracy grade, backlash requirement, preload or clearance condition, load direction and end machining details together.

Precision Double-Nut Ball Screw Assembly

Double-nut ball screw assemblies are often selected when a machine needs better rigidity and backlash control than a standard single-nut structure. In practical use, the key concern is whether the assembly can maintain stable precision after long-term operation.

DLY's precision double-nut ball screw assembly patent direction focuses on the structural coordination between two nuts, the screw shaft and the protective design. The goal is to support higher transmission accuracy, better rigidity and more reliable operation in precision feeding systems.

Precision double-nut ball screw assembly structure for rigidity and backlash control.

For buyers comparing standard and double-nut ball screws, this design direction is particularly relevant to DFU Ball Screw selection. Double-nut structures are commonly considered for CNC equipment, automation axes, precision measurement equipment and other systems where rigidity and micro-feed stability matter.

Low-Noise and Adjustable Structure for Better System Matching

Noise is not only a comfort issue. In high-speed or repetitive motion systems, abnormal noise may also indicate poor contact, vibration, assembly mismatch or unsuitable operating conditions. For automation equipment and customized production lines, installation adaptability is another practical concern.

DLY's adjustable low-noise ball screw structure focuses on reducing unnecessary noise during operation and improving the adaptability of the ball screw assembly to different installation requirements. This type of design thinking is useful for buyers who need a smoother motion axis but also have limited mounting space or customized machine layouts.

Adjustable low-noise ball screw structure for customized motion systems.

For high-speed movement, compact equipment or noise-sensitive machinery, buyers should confirm not only the screw diameter and lead, but also nut type, lubrication method, support unit arrangement, installation alignment and expected operating speed.

Selected Ball Screw Patent Records

DLY's public patent records include several ball screw and ball nut patents related to rolled ball screw manufacturing, transmission accuracy, double-nut assemblies, lubrication structures, sealed ball screws and heavy-duty ball screws. Selected records are summarized below for easier reference.

More certificate information can be viewed on DLY's Intellectual Property and Patents page. For supplier qualification, OEM cooperation or technical review, buyers can contact DLY to confirm available certificate details during communication.

How These Innovations Support Ball Screw Supply

For overseas buyers, patents are most meaningful when they are connected with practical supply capability. DLY's ball screw product range includes cold rolled ball screws, precision ground ball screws, ball screw nuts and machined ball screw assemblies for CNC machines, automation equipment, linear modules, woodworking machinery and industrial motion systems.

This means DLY can support both standard model supply and application-based confirmation. If the required product is a regular SFU Ball Screw, a double-nut DFU structure, a high-load ball screw, a high-speed screw or a custom machined assembly, the final specification should be checked according to the actual machine conditions.

Related DLY Ball Screw Products

FAQ About DLY Ball Screw Patents

Are all DLY ball screws patented products?

Not every standard ball screw model should be understood as a separate patented product. DLY's patents reflect technical work in ball screw structures, nut assemblies, lubrication protection, manufacturing methods and related product development. Standard and customized products should still be confirmed according to model, size, accuracy grade and application requirements.

Which patent direction is useful for dusty equipment?

For dusty or contaminated environments, buyers should pay special attention to sealed ball screw structures, oil port protection, lubrication method and external protection. The left-handed ball screw with oil groove and sealed low-torque ball screw designs are both related to protection and lubrication stability.

Which structure is suitable for higher rigidity?

For higher rigidity and backlash control, a double-nut ball screw structure is often considered. Buyers should confirm the available installation space, nut length, preload or clearance requirement, load condition and positioning accuracy before selecting a double-nut assembly.

Can DLY provide certificate information during supplier review?

DLY can provide available patent and certificate information during technical communication, supplier qualification review or OEM cooperation discussion. Buyers can send the required product type, project background and documentation request for confirmation.

Need Ball Screw Selection or Patent Certificate Support?

DLY supports ball screws, ball screw nuts, end machining, support units and matched linear motion components for distributors, OEM buyers, automation equipment manufacturers and industrial maintenance projects. If you need to confirm a ball screw model, drawing, patent-related certificate information or customized assembly, please contact DLY for technical communication.