R-Series Hub Technology


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Easton wheels are meticulously tuned by skilled craftsmen to achieve uniform spoke tension. This simple procedure vastly strengthens the wheel and greatly reduces spoke failure. Further, it allows us to sufficiently tension the spokes so that the wheel has the compound attributes of light weight, stiffness, and durability. The spokes are only one aspect of the wheel that sets us apart. Every aspect of the wheel, from bearings to nipples, has been refined and improved. Check out some of our less visible hub innovations here.

hub body

CNC-MACHINED HUB BODY
Sure our hubs are pretty, but that's not the half of it. They employ some important design aspects that deserve mention. Our hubs are designed to be strong, stiff, and light - and they are. What's more, our hubs are just as strong whether the lacing is radial or cross pattern. Functionality is a primary concern in our design. Look carefully and you'll notice that there are no wear parts in the hub shell. Anything that can wear is easily and inexpensively replaceable, and you never have to worry about the primary (and most expensive) components becoming worn. How long can they last? We don't know... in the eight years and thousands of miles since we started making them, we've never seen one wear out!

FREEHUB BODY
The freehub body bolts to the hub and is easily removable and replaceable. It fits 7, 8, or 9 speed cassettes. With minor modifications, you can also run Campagnolo 10 speed.

FIXING BOLT
Our custom fixing bolt not only holds the freehub body in place, but it also serves as a carrier for the sealed cartridge bearing. This system allows outboard placement of the load carrying bearing, which allows a smaller, lighter axle.

axle

OUR AXLES
Axle material has been optimized depending upon the application. For the rear, where strength and rigidity are critical, we use titanium. For the front, aluminum is ideal. Our mountain bike front hub features an oversize hollow chromoly axle. As with our components, the material has been selected to suit the application. And again, they do not have any moving parts in direct contact, so they aren't susceptible to rotational wear.

end caps

OUR ENDCAPS
Sure the sculptured end caps look good, but their design has more to do with function than fashion. Note how they taper nicely into the main hub body.  This isn't just for styling. The end caps actually form a labyrinth seal that nests into the hub body. This forms a torturous path for grit which further shields the bearings from contaminants.

bearings

OUR BEARINGS
We use premium grade double sealed cartridge bearings in our hubs. Why? Cartridge bearings are best for a number of good reasons. First, the friction reducing properties of a fine sealed cartridge bearing just can't be beat, so rolling resistance is reduced to an absolute minimum. Second, cartridge bearings are replaceable—easily and inexpensively. Third, our bearings are double sealed, so contamination is virtually eliminated. Finally, we use proprietary grease formulated specifically for bicycle wheel conditions. It's optimum viscosity, waterproof, and tremendously impervious to contaminants.

AUTOMATIC BEARING PRELOAD
Inadvertent over tightening causes excessive side-load which destroys bearings. Easton hubs utilize a carefully calibrated wave spring to provide automatic pre-load, so the bearings remain in perfect adjustment at all times. In addition, no maintenance is necessary.