Center Joint Cover Seal Description
The YNF16876 center joint cover seal (OEM YN52F02230P1) is a key sealing component used in Kobelco SK200-10 and SK250-10 excavator center swivel joint systems. It is designed to prevent hydraulic oil leakage while maintaining stable pressure distribution between upper and lower structures.
Manufactured using high-performance sealing materials, the cover seal provides excellent resistance to hydraulic oil, temperature variation, and mechanical stress. Its precision-molded structure ensures tight installation fit, reducing the risk of leakage and contamination in the swivel joint system.
This component plays a critical role in ensuring smooth hydraulic transmission between the excavator upper and undercarriage sections. Stable sealing performance helps maintain system efficiency and reduces maintenance frequency in demanding construction and mining environments.
SK200-10 Center Joint Cover Seal Technical Data Sheet
| Item |
Specification |
| Product Name |
Center Joint Cover Seal |
| YNF Number |
YNF16876 |
| OEM Part No |
YN52F02230P1 |
| Machine Model |
SK200-10 / SK250-10 |
| System Type |
Center Swivel Joint / Hydraulic Distribution |
| Function |
Oil Sealing / Pressure Protection |
| Material |
High-performance Rubber / Composite Seal |
| Temperature Resistance |
-40°C to +120°C |
| Application Position |
Excavator Center Joint Cover |
| Brand |
YNF |
| MOQ |
1 Piece |
| Origin |
China |
| Shipping Method |
Air / Sea / Express |
| Payment Terms |
T/T, Western Union, PayPal |
Center Joint Cover Seal Applications
| Industry |
Application Scenario |
| Construction |
Excavator hydraulic system maintenance |
| Mining |
Heavy-duty earthmoving equipment sealing repair |
| Quarry |
Continuous excavation machinery operation |
| Infrastructure |
Road and foundation equipment service |
| Repair Workshop |
Center swivel joint rebuilding |
Center Joint Cover Seal Detail Display
The center joint cover seal is a critical hydraulic sealing component in excavators, responsible for preventing oil leakage between rotating upper and lower structures.
Common failure causes include aging, hydraulic oil contamination, and long-term pressure fatigue. Regular replacement is necessary to maintain hydraulic efficiency and prevent system failure.
YNF Machinery also supplies related center joint components:
- Rotary joint seals
- Swivel joint assemblies
- Hydraulic distribution blocks
- O-ring sealing kits
