
520RO Sealed Chain
seal chain structure

Pin | The link connecting the outer links is the central axis of the chain bend. |
Bushing | The chain plate connected to the inside is the supporting force axis of the pin shaft. |
Roller | Contact with the sprocket to make the chain roll smoothly. |
Inner/outer chain link | Together with the pin, it supports the transmission of load and power. |
Seal Ring | Lubricating grease sealed between the pin and the bushing. |
lubricating oil | Provide lubrication between pins and bushings to prevent wear and elongation. |
Product data information
Model | unit | 520RO |
Pitch-(P) | mm | 15.88 |
Roller Link width(Min.)-(W) | mm | 6.25 |
Roller Dia(Max.)-(D) | mm | 10.16 |
Pin Link Plate Thickness-(T1) | mm | 2.00 |
Inner link plate Thickness-(T2) | mm | 2.00 |
Inner Link Plate Heinght-(H) | mm | 14.75 |
Pin Dia-(d) | mm | 5.07 |
Overall Width Riv-(L) | mm | 20.05 |
Overrall Width Con-(G) | mm | 20.95 |
Minimum Tensile Strength | kgf | 2710 |
Average Tensile Strength | kfg | 3050 |
Displacement Application(Max) | cc | 250 |
Optimized Performance with Continuous Lubrication
The chain features a specially formulated grease, securely contained by durable rings positioned between the solid bushings and hardened pins. This system guarantees constant lubrication, virtually eliminating operational friction. The result is significantly reduced wear and minimal chain stretch, leading to a considerably extended service life for the chain.
Seal Ring Design for Contaminant Exclusion
Seal ring-type chains feature specialized rings that physically block debris from entering the bearing zone. This design simultaneously prevents external contaminants from penetrating and retains internal grease within the working components.
Applications
- motorcycle
Product Advantages
● Suitable for daily riding, competitive driving and chain transmission systems in harsh environments.
●Superior Tensile Strength:Made from high-carbon alloy steel with heat-treated pins and rollers, offering better wear resistance and longer chain life under high loads.
●Effectively block dust, moisture and lubricating oil leakage, significantly improve the service life and operating efficiency of the chain
Chart

Frequently Asked Question
Yes, the minimal wear leads to the least amount of chain stretch over time.
Absolutely! Sealed chains are built for harsh environments. The seals keep mud, water, and grit out, making them perfect for off-road adventures.
he chain’s service life is prolonged due to reduced wear and stretch.
Sealed chains have tiny rubber rings that act like mini shields. They keep special oil inside and keep dirt and grime out, which helps them last longer.
Special formulated grease, durable sealing rings, solid bushings, and hardened pins work together for continuous lubrication.
It constantly lubricates and significantly eliminates friction.