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CeramicSpeedPF4630
Sale 20% Off$287.20 $359.00

Item # CMD0005

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  • Black, 68-86mm ($287.20)
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Item # CMD0005
Description

Give friction the boot.

Pressfit30 shells allow frame builders the opportunity to build beefier bottom bracket shells and take advantage of larger 30mm crank spindles. Adding stiffness while dropping weight is always the goal of cycle design and if you can achieve this while reducing friction, well then you have a recipe for a fast bike. Capitalizing on the industry-leading bearings from CeramicSpeed comes its PF4630 bottom bracket allowing you to take full advantage of the improved power transfer and lightweight design afforded by PF30 paired with the silky smooth spinning of ceramic ball bearings. Enjoy the added speed at the same effort, or the ability to squirrel away some energy savings until you're ready to launch your big attack with this bottom bracket.

Reducing friction not only saves watts, allowing you to ride faster with less effort, it helps the component last longer. The Danes at CeramicSpeed are downright obsessive in its quest to reduce friction which is why it offers bottom brackets for almost every standard on the market. And if you loathe friction as much as the crew at CeramicSpeed and want to optimize your bike to go as fast as it can, upgrade your bike with one of its bottom brackets and enjoy reduced friction as well as better resistance to contamination and corrosion.  

Compared to steel ball bearings, CeramicSpeed's balls resist corrosion, which is in part responsible for why bearings start to feel gritty as they age as well as causing the bearings to run hotter which reduces the lifespan of the component. CeramicSpeed balls are also much harder than standard steel balls. Apply enough pressure to a steel ball and it will crack under load while under that same load the CeramicSpeed ball won't flinch, maintaining the exact surface finish and roundness which could affect spinning smoothness. Meanwhile, these non-round and rough ball bearings create increased friction and begin to quickly wear down the steel bearing races.

CeramicSpeed is able to achieve such high marks because it uses the highest quality Grade 3 Silicon Nitride for its bearings. Don’t be fooled into thinking that all ceramic bottom brackets bearings on the market are the same. In testing, CeramicSpeed claims its balls are 15% harder, can take 99% higher loads, and are more than 100% smoother than other ceramic balls typically used on the market. Included with the bottom bracket are dustcovers, special grease for maintenance, and a sticker sheet.

  • Silky smooth bearings drop the drivetrain's friction
  • Fits 30mm spindle cranks to PF30 shells
  • Ceramic balls are harder, rounder, and resist corrosion vs. steel
  • Grade 3 Silicon Nitride ceramic bearings offer smoother spinning
  • Aluminum with anodized black finish house the ceramic bearings
  • Enjoy the same friction fighting the pros count on
Tech SpecsWeight
Tech Specs
Material
[cups] aluminum, [bearings] ceramic
Shell Type
PF30
Shell Width
68mm
Axle Type
30mm spindle
Recommended Use
road cycling
Manufacturer Warranty
4 years
Weight

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

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Grams

Oz

Black, 68-86mm
100g
3.53oz

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