CeramicSpeed Bottom Bracket | PF4630

PF4630 Bottom Bracket
This Bottom Bracket is when you have a PF30, BBright, or 386EVO shell frame and want to install a BB30 crankset into the frame. All have a 46mm inner diameter and smooth insides, though the widths vary from 68mm to 86mm. The crank has a 30mm diameter spindle.

This Bottom bracket features nearly zero loss of power due to friction, thanks to the bearings. The bearings have round, smooth CeramicSpeed balls rolling on hardened-steel races. The Coated version has a metallic coating on the races, making them even more complicated and smoother, resulting in longer life and lower drag. They come installed in cups.

In The Box

• 2 cups with bearings installed.
• 2 1mm spacers.
• 2 0.5mm spacers.
• 2 dust covers.
• O-ring.
• Spacer tube.
• CeramicSpeed All-Round Grease.
• Sticker sheet.

Technical Data

30mm thru-axle cranks are increasingly popular due to their high stiffness and low weight. 46mm inner diameter bottom brackets are famous for the freedom they offer designers in building frames. Because of the variety of widths, the cups here extend into the shell and come with a telescoping spacer tube to further seal and stiffen the system.

The Bottom bracket is already stiff thanks to rugged ceramic bearings and hardened-steel races. Thanks to CeramicSpeed, it’s also nearly zero drag. Standard Bearings typically have a frictional drag of 0.3-0.4 watts per se, and that’s in the range of a 75% drag reduction versus conventional bb’s. The bearings last at least 3x longer than other bearings.

Change the grease for your rides. Race Day Grease, All Round, and Long Life are greased CS designed. The first is the slightest drag; the last is the most durable. All Round, in the middle, comes in road bearings.

What is Coated?
A lifetime warranty covers our coated products. The unique coating formula is a metallic layer that covers the bearing races and makes them 75% harder than steel. Thanks to this, they are highly resistant to corrosion, and the coating provides even lower friction than our standard bearings. Even if the bearing is contaminated with degreaser, water, or mud, the risk of bearing failure due to corrosion is negligible if you choose the coated version.

Installation of PF4630 Bottom Bracket

Maintenance of CeramicSpeed PF4130 Road and MTB Bottom Bracket
We recommend that you follow our instructions on maintaining your CeramicSpeed Bottom Brackets to achieve the lowest friction and the best longevity.

SKU# 105269, 105272