O-ring and X-ring roller chain

O-ring and X-ring roller chain vs standard roller chain: Donghua explains the difference

Become a Distributor or MRO-partner

At Donghua, we know how important it is to keep your machines with O-ring and X-ring rollerchain running. Downtime costs money. That is why we supply roller chains that provide a solution. Whether you work in industry, agriculture, logistics or motorsport, the right chain will prevent unnecessary maintenance and prolong the life of your installation.
In this article, we list the differences between our roller chains, O-ring chains and X-ring chains for you.

Become a Distributor or MRO-partner

Our ‘standard’ roller chain: robust and versatile

Donghua’s standard roller chain is strong, reliable and versatile. Perfect for those working in clean environments or light industrial applications. But because this chain has no seal, you need to clean and lubricate it regularly. Dirt and dust have free rein, and in a dusty environment you will see this reflected in the wear.

O-Ring roller chain from Donghua: lubrication is a thing of the past

Our O-ring chain is designed for tougher conditions. Thanks to the O-rings between the inner and outer plate, the factory grease stays in place and keeps dirt and moisture out. The result? A chain that lasts much longer AND requires no maintenance.Here’s what it gets you:

Completely maintenance-free – never lubricate or clean again
Grease-free exterior on which dust and dirt do not stick.
Long service life
Better sealing against dirt, sand and moisture
Less wear, less downtime

Whether you work in wet, dusty or dirty conditions, this chain holds up.

X-Ring roller chain from Donghua: top performance without compromise

Our X-ring chain is the ultimate solution for those who demand maximum performance. The unique X-shaped sealing ring ensures less friction and an even better seal than with O-rings. You lose less power, the chain runs smoother and the service life is impressive.
Why customers choose the X-ring:

Completely maintenance-free – never lubricate or clean again
Very low friction resistance
Maximum protection against external influences
Longest service life, suitable for high speeds.

Applications of the O-ring and X-ring roller chain

In agricultural machinery, equipment is often exposed to mud, dust, and changing weather conditions. Donghua’s O Ring and X Ring chains provide excellent protection against contamination and moisture, making them ideal for use in harvesters, balers, and conveyors.

In dusty and contaminated environments, such as wood processing, the stone industry, and recycling, chains are constantly exposed to particles that cause wear. Here, our O Ring chains perform exceptionally well, as the seal prevents dirt from entering the chain and causing damage.

For motorsport and other extreme conditions, our X Ring chains are designed to handle the toughest applications, such as off road motorcycles, all terrain vehicles, and racing karts. With enhanced sealing, even lower friction, and extended durability, they are the perfect choice for environments where top performance is essential under extreme stress.

Applications of the Donghua O-ring and X-ring roller chain

Maintenance-Free Performance with O-ring and X-ring roller chain Chains from Donghua

Choose maximum reliability and minimal downtime with Donghua’s maintenance-free chains. Our O Ring and X Ring chains are built to perform under the most demanding conditions, without the hassle, without grease fittings, and without unexpected interruptions.

Unlike standard roller chains that require regular lubrication, our O Ring and X Ring chains offer long-lasting, low-maintenance performance. Specially designed sealing rings retain internal lubrication while keeping out dirt and debris. This results in significantly lower friction, reduced wear, and a much longer service life.

No downtime. No worries. Just get the job done — with Donghua.

Donghua Strives for Service and Collaboration: More Than Just Supplying”

We believe in collaboration. That’s why we sell our industrial roller chains exclusively through a network of stocking partners (MROs) and to machine builders (OEMs). This ensures fast delivery, local availability, and technical support when needed. Our engineering team provides custom advice and guidance to ensure that your drive systems always perform at their best. Together with our partners, we build sustainable solutions and long-lasting relationships.

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