428UO 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 | 428UO |
| Pitch-（P) | mm | 12.70 |
| Roller Link width（Min.)-(W) | mm | 7.85 |
| Roller Dia(Max.)-(D) | mm | 8.51 |
| Pin Link Plate Thickness-(T1) | mm | 1.80 |
| Inner link plate Thickness-(T2) | mm | 1.80 |
| Inner Link Plate Heinght-(H) | mm | 12.10 |
| Pin Dia-(d) | mm | 4.51 |
| Overall Width Riv-(L) | mm | 20.10 |
| Overrall Width Con-(G) | mm | 21.80 |
| Minimum Tensile Strength | kgf | 2100 |
| Average Tensile Strength | kfg | 2400 |
| Displacement Application(Max) | cc | 150 |
Advanced Sealing System Design
The O-ring chain features a sophisticated sealed-in lubrication maintenance system. Special formulated grease is contained by O-rings at the interface between solid bushing and hardened pin, providing constant interior lubrication. This innovative design significantly enhances operational efficiency and effectively reduces friction during use.
Superior Performance and Durability
The chain is manufactured using premium alloy steel that undergoes specialized heat treatment to achieve optimal strength characteristics. This superior construction, combined with minimal wear properties, results in minimal chain stretch. As a result, the service life is extended 5-10 times longer compared to standard chains.
Applications
- motorcycle
Product Advantages
● 428 pitch specification: Compatible with a wide range of small to mid-size motorcycles
●High-tensile steel construction: Heat-treated for enhanced strength and durability
●Long-lasting lubrication: Seals retain oil inside for smoother operation
Chart
Frequently Asked Question
sealed chain comes with O-rings or X-rings that lock in lubrication and block out dust and dirt. It’s way more durable than standard chains!
Absolutely! Sealed chains are built for harsh environments. The seals keep mud, water, and grit out, making them perfect for off-road adventures.
Yes, they cost a bit more—but they last much longer and require less maintenance, so they save you money in the long run!
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.
Sealed chains are used on everything from dirt bikes to racing motorcycles to street bikes—even in industrial machinery!
The seals are extremely durable. Most sealed chains last 10,000–15,000 km or more, depending on riding style and conditions.
