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楼主 |
发表于 2008-6-17 12:07
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179 美元两副
上面还是有金属外圈的吗?
介绍:
Bones Swiss Ceramics are the fastest bearings you can buy. A winning combination of Bones precision ground and polished races, fiber reinforced high speed ball retainer, Cerbec?silicon nitride ceramic balls, Speed Cream?racing formula lubricant, and a frictionless, non-contact shield. The advantages of using ceramic balls are that they are non-corrosive, lighter weight, harder & stronger than steel, have lower rolling friction, and last longer. This makes Bones Swiss Ceramic bearings accelerate faster, roll farther, and last longer than polished steel ball bearings. If you are looking for the very best, invest in Bones Swiss Ceramics.
Each package comes pre-lubed with Speed Cream, instructions and a sticker. *All Bones Bearings are Skate Rated?to withstand the destructive forces created by high performance skating. This is our way of saying that just using a bearing with an ABEC rating is not enough to ensure that a bearing will perform well for skating, since ABEC ratings were intended for electric motor bearings, not skate bearings. We have adjusted the tolerances, clearances, lubricant, and component materials to optimize Bones Bearings for use in dirty, high impact environments... where you skate. That's why they roll faster and last longer than mere ABEC rated bearings. |
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