O Ring Chain Friction

Non o ring o ring and x ring.

O ring chain friction.

Built for professionals d i d s top of the line racing chain can be found on the bikes of ricky brabec for rally josh strang for gncc and ken roczen for sx mx. They are strong light cheap to produce and relatively friction free but they do not have internal lubrication so they tend to wear out more quickly. O ring sizes have been standardized and range in size from an inside diameter of 0 029 in. The d i d 520 vt2 narrow x ring chain is a high quality chain for desert or enduro riders or for the mxer who wants a long lasting chain that has half the power loss of a normal o ring chain and benefits from reduced maintenance over a non o ring.

It has higher performance in terms of durability lifetime and power loss than non o ring chains as it has less friction than o ring chain while. X rings have less contact area between the x ring and the link plates and rollers and because of this reduction in friction x rings also have a tendency to last longer than o rings. Also your chain type makes a difference in which lubricant you should buy. This drag can be felt while rolling the rear wheel in cold state however the drag vanishes after.

The x ring chain is a specialized type of sealed roller chain used to transfer mechanical power. And a cross section of 0 040 in. The non o ring types date back to the beginning of time and are still used extensively today. The biggest thing that the x ring chain brings to the table is less friction and friction is something every o ring chain on.

The did 520erv3 120 gold chain with connection link is an x ring construction that offers greater strength and lower friction drag than traditional o ring constructions. It uses x ring seal to keep lubricant usually grease in place. For example an x ring chain is designed to reduce the extra friction over an o ring chain by the shape of its cross section. In o ring type chains when the rubber o ring is pressed and riveted it changes shape and becomes flat from the sides hence seals the space efficiently but the pressed o ring with flat sides create friction which results into significant drag.

To o rings with an inside diameter of 16 or more in. The x ring keeps dust dirt and mud out while retaining lubrication. You either have an x z or o ring chain type and it s important to use that information when making a decision. Normally motorcycle chain lubes work best when applied to the chain they were created for.

Like the standard o ring chains it is also used in high performance motorcycles. Installation dimensions vary with duty and application and the user may find it easy to consult manufacturers catalogs which are typically configured as shown in figure 10 20. There are three principal types of roller drive chains. Stretch o ring joule effect compress o ring lower durometer of o ring coeffici ent of friction increase durometer refer to rotary seals.