Central rotary joint sealing rubber part solution
The central rotary joint is a key component in construction machinery, hydraulic systems and automation equipment to achieve fluid transmission and rotary movement, and its sealing performance directly affects the operation efficiency and life of the equipment. As a professional supplier of rubber seals, we provide customized sealing solutions that are resistant to high pressure, wear and tear, and long life, helping customers worldwide solve leakage problems and reduce maintenance costs.
The core technical advantages of the central rotary joint seal
Multi-layer sealing structure design
A composite sealing scheme is adopted, combined with O-rings, V-rings, and customized sealing rubber rings to form multiple protective barriers.
Main sealing layer: High-elasticity rubber materials (such as NBR and FKM) are selected to ensure the fit of the end face and compensate for the dynamic displacement through precise compression control (error ±0.01mm).
Auxiliary sealing layer: Built-in spring compensation mechanism, which can automatically adjust the gap caused by wear, and extend the sealing life by 3-5 years6.
Dustproof structure: The outer layer is reinforced with a wear-resistant polyester curtain to resist the intrusion of external particles, which is suitable for harsh working conditions such as mines and buildings.
Excellent material performance
Wide temperature range: -40°C to 150°C stable operation, short-term resistance to 200°C high temperature (such as fluoroelastomer material).
Chemical resistance: excellent resistance to hydraulic oils, lubricating oils, and weak acid/alkali media to avoid swelling failure.
Anti-aging design: adding anti-ultraviolet and ozone protectants, the service life of the buried environment can reach more than 20 years.
The key role of seals in the central rotary joint
Dynamic sealing guarantee
Through the mechanical face sealing technology, the axial and radial displacement (maximum angular displacement up to 15°) is compensated by the elastic deformation of the rubber, and the vibration and thermal expansion and contraction of the equipment are adapted.
Noise and shock reduction
The sealing structure can absorb more than 80% of the vibration energy of the pipeline and reduce the operating noise of the equipment to less than 65dB, which is especially suitable for precision machine tools and medical equipment.
Leak-proof design
Tested by the CNAS laboratory, the sealing system has been operated continuously 5000 times without leakage at a pressure of 4.0MPa, in line with ISO 14001 environmental protection standards.
| Application industry | Typical equipment | Key points of sealing needs |
| Construction machinery | Excavator slewing platform | Resistant to mud abrasion and impact |
| New energy equipment | Hydraulic pitch system for wind turbines | Low-temperature resistance, ultraviolet aging resistance |
| Automated production line | Industrial robot rotary oil supply system | High precision, low coefficient of friction |
| Shipbuilding | Deck crane hydraulic lines | Salt spray corrosion resistance, IP68 waterproof level |
Professional manufacturing and customized services
Whole-process quality control system
It is produced in a 100,000-level dust-free workshop to ensure that the sealing surface finish is Ra≤0.8μm1.
IATF 16949 certification, supporting third-party laboratories to issue sealing performance test reports.
Quick response customization
Provide 3D scanning and modeling services, and complete non-standard size design (such as special-shaped flange hole spacing adjustment, and wrap-around joint customization) within 48 hours.
Support EPDM, silicone rubber, and other 20 materials to meet the needs of FDA, RoHS, and other special certifications.
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