In precision machinery and automation systems, ball screws play a critical role in converting rotary motion into linear motion. However, a common problem in existing ball screw designs is the lack of protection for lubrication oil ports, which can allow dust, metal chips, and other debris to enter. These contaminants may clog the oil channels and interfere with the smooth rotation of the balls inside the nut, leading to increased friction, wear, and premature failure.
Background
During long-term operation, the friction between balls inside the nut increases, making effective lubrication essential. Many traditional ball screws have oil ports exposed to the environment, making them vulnerable to contamination. This often results in blocked lubrication paths and compromised ball rotation, reducing the performance and service life of the ball screw.
DLY Patented Solution: Left-Handed Ball Screw with Lubrication Groove and Protective Sealing
To address these challenges, DLY has developed a patented left-handed ball screw featuring an integrated lubrication groove combined with multi-layer sealing and protective structures.
Key Technical Features:
- Screw and Nut Assembly:
The screw features a helical groove on its surface, and the nut is fitted onto the screw with an internal recirculation channel where balls circulate around the groove.
- Oil Groove and Leakage Channel:
The nut contains interconnected oil groove and leakage channel systems that direct lubrication effectively.
- Sealing Cap with Rubber Seal:
A sealing cap is firmly mounted on the nut via a fixed screw. The cap includes a leak oil port sealed with a rubber stopper, preventing external contaminants from entering and retaining lubrication.
- Oil Baffle with Filter Hole:
Inside the oil groove, a baffle with a filter hole is installed to block debris while allowing lubrication to pass through, ensuring clean oil flow to the balls.
- Protective Frame and Dust Ring:
The nut is equipped with a protective frame mounted above the sealing cap to guard against mechanical impacts, and a dust ring installed on the screw side to further block dust ingress.
Secure and Stable Assembly
- The sealing cap is secured by screws and supported by a rubber gasket to maintain airtight contact with the nut.
- The oil baffle is pressed firmly into place by matching brackets and clamps attached to the sealing cap, ensuring no movement or leakage.
| 1 | Screw |
| 2 | Helical Groove |
| 3 | Nut |
| 4 | Dust Ring |
| 5 | Ball |
| 6 | Recirculation Channel |
| 7 | Leakage Channel |
| 8 | Oil Groove |
| 9 | Baffle |
| 10 | Leakage Hole |
| 11 | Bracket |
| 12 | Sealing Cap |
| 13 | Rubber Gasket |
| 14 | Clamp |
| 15 | Fixing Screw |
| 16 | Protective Frame |
| 17 | Mounting Angle |
| 18 | Oil Leakage Port |
| 19 | Rubber Seal Plug |
Benefits of Our Design
| Benefit | Description |
|---|---|
| Enhanced Lubrication Protection | Multi-layer sealing prevents debris from entering lubrication channels. |
| Maintained Ball Rotation Smoothness | Filtering and sealing avoid ball jamming, reducing friction and wear. |
| Extended Ball Screw Life | Effective lubrication and contamination control lead to longer service life. |
| Improved Reliability | Robust protective frame and dust ring provide defense in harsh environments. |
Left-Handed Ball Screw with Lubrication Groove and Protective Sealing Ideal Applications
Our innovative ball screw design is perfect for industries requiring precise and reliable linear motion, such as:
- CNC machining centersCNC
- Woodworking machinery
- Laser cutting equipment
- Semiconductor manufacturing
- Industrial automation and robotics
To fully understand the technical solutions of this utility model, please refer to the detailed illustrations in the accompanying drawings of the embodiments.
If you have any questions or would like to learn more about this patent, do not hesitate to contact our technical team for assistance.
Interested in exploring other patents from DLY?
Click here to discover more of our innovative solutions.
One-Stop Ball Screw Factory In China
With over 20 years of expertise in motion component manufacturing, DLY is committed to providing high-quality, patented ball screw products that meet the rigorous demands of industrial automation. We offer OEM/ODM services, customized designs, and dedicated technical support to ensure our solutions fit your specific needs.
Our Address
No. 12, Baixian Road, Shuige Industrial Zone, Lishui, Zhejiang, China
Phone Number
+8618957070963
+86-578-2959520
export@dlybearing.com
