428UX 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 | 428UX |
| 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 |
Application of 428UX Sealed Chains in Open Rear Drive Motorcycles
These chains are specifically designed for motorcycles with rear drive systems exposed to the atmosphere and lacking full chain guards. Their open-environment use demands protection against mud and dirt infiltration into critical bearing areas.
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.
Grease Retention in Bearing Zones
The sealed configuration ensures lubrication remains confined to the chain’s bearing surfaces during operation. This dual-action sealing mechanism maintains optimal grease levels while excluding abrasive particles that accelerate wear.
Applications
- motorcycle
Product Advantages
● 428 pitch specification: Compatible with a wide range of small to mid-size motorcycles
●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.
●Smooth & Quiet Operation:The sealed construction minimizes friction, resulting in quieter riding and smoother throttle response.
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. Unlike standard chains, 428UX sealed chains are engineered specifically for open rear-drive systems without guards, relying on seals instead for protection.
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.
428UX Sealed Chains are a specially designed motorcycle drive chain. They are mainly used on motorcycles whose rear drive system is not completely enclosed by the chain guard and is directly exposed to the external environment (such as mud and dust).
The seals are extremely durable. Most sealed chains last 10,000–15,000 km or more, depending on riding style and conditions.
