Hambini Racing PF30A Bottom Bracket Shimano Crankset (Black)

(9 customer reviews)

£248.00 Ex. VAT

This bottom bracket is designed to interface a Shimano 24mm Hollowtech 2 Crankset (Sora, Tiagra, 105, Ultegra, Dura Ace) and Shimano Compatible (Some ROTOR and FSA) 24mm Cranksets with a bike frame that uses a PF30A Bottom Bracket (46mm Nominal Inside Diameter x 73mm wide). This type of Bottom Bracket is almost exclusively used on Cannondale Bikes such as the Systemsix.

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SKU: PF30A-Shimano-Racing Edition (Black) Category:

Description

This bottom bracket is designed to interface a Shimano 24mm Hollowtech 2 Crankset (Sora, Tiagra, 105, Ultegra, Dura Ace) and Shimano Compatible (Some ROTOR and FSA) 24mm Cranksets with a bike frame that uses a PF30A Bottom Bracket (46mm Nominal Inside Diameter x 73mm wide). This type of Bottom Bracket is almost exclusively used on Cannondale Bikes such as the Systemsix.

Hambini Racing Bottom Bracket Overview

  • 20% stiffer than Hambini Standard Bottom Brackets
  • As used in the Pro-Peloton
  • One Piece design aligns the bearings perfectly, reducing the likelihood of creak
  • NTN Bearings Ultra Low Friction Bearings fitted as standard in Road applications. Fully Sealed NTN/FAG Bearings fitted in MTB Applications
  • No Hammers are required to install or Remove the Bottom Bracket
  • Fully Serviceable, the bearings can be replaced quickly and easily
  • It is supplied with fitting adaptors in M12 (or 1/2 inch), a press or studbar will be required to facilitate installation
  • One year warranty on the bottom bracket body

Precision Engineered and Manufactured in the United Kingdom

Hambini Bottom Brackets are amongst the lowest friction bottom brackets in the world. They are used by recreational cyclists, road racers, triathletes and time trialists from around the globe. They are of proven design and are manufactured in the United Kingdom. These units are of a one piece construction which makes them inherently resistant to creak, they will maintain perfect bearing alignment and function under loads in excess of 4000W.

Hambini Bottom Bracket Reviewed by an Engineer

Hassle-Free Maintenance

All Hambini bottom brackets can be installed and removed with a conventional bearing press, they use a controlled method of installation using the recommended fitting adaptors, they require no hammers or specialized tooling for removal. Additionally, the wearing component – the bearings – can be serviced in situ or removed within just a few minutes. The bottom bracket has been designed to be fully rebuildable.

Unrivalled Performance

Unloaded bearing spin tests are a poor measure of frictional performance but they do highlight good bearing alignment. The link below is to a video of a Hambini Racing Bottom Bracket that had completed 10,000km

Class Leading Parasitic Drag Loss (Friction)

The graph below shows how Hambini bottom brackets perform in comparison to the bottom brackets of other manufacturers. The test conditions model real world cycling and more importantly mimics realistic frame tolerances. All of these tests have been conducted with an eccentricity of 0.1mm which is generally the maximum permitted in frame specifications – the reality is tolerances have been known to be much worse than this. Misalignment is more critical to friction than the type of bearing ball material, a slight misalignment can easily outweigh the difference between a top of the range NTN bearing and a mediocre ebay no name bearing. The results show that bottom brackets which have an element of structural linkage between the drive and non-drive sides (one piece/threaded etc) perform much better than those which are multi piece.

The high torque and low RPM of pedaling causes high Hertzian contact stresses on bearing surfaces which cause friction levels to change over time. Those bottom brackets which have used ceramic bearings, start off with fairly low levels of friction but over time their friction increases dramatically. The super hard ceramic balls grind a track into the comparatively soft bearing races causing friction to increase. This would be analogous to trying to drive a locomotive train on a road, the wheels would cut grooves into the road surface due to the huge difference in surface hardness.

Bottom Bracket Stiffness

A Hambini BB is a one piece bottom bracket. It actively contributes to the stiffness of the bike’s pedaling platform. Threaded and multi piece bottom brackets have an element of play in their design so they do not contribute anywhere near a comparative level of stiffness. Reviewers of Hambini BB’s often comment on their feeling of improved stiffness, this is due to them being one piece and undergoing a proprietary heat treatment process. This makes them stronger and stiffer. This is a difference the end user cannot see – but they can feel.

Support

A lot of support questions can be answered by visiting the support section.

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Additional information

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9 reviews for Hambini Racing PF30A Bottom Bracket Shimano Crankset (Black)

  1. Ken927

    I installed this with a new dura ace crank in my C’dale systemsix. Ordered on Friday, it was at my door in Utah on the following Friday. I can’t fault the service or the product, it is well made, fits well and no creaks. What do you expect when you deal with 5 year olds. Great job Hambini

  2. Anonymous

    Within one one hundredth of a mm for tolerances in every direction. Beautiful, compared to the Cannondale tolerances which are an order of magnitude worse. Also HUGE thanks to Hambini himself for taking the time to respond to a dozen of my emails with newbie questions.

  3. Alex

    Great product, backed up by great service!

  4. David

    Fine engineering and quality advice. First ride after install of Hambini Racing BB was sweet. The bike was fast on the stock BB, now it’s just ludicrously quick.

  5. Anonymous

    Great buying experience with super fast shipping to the USA. I knew it was money well spent when I compared the construction quality of the Hambini Racing BB to the stock BB on my Super6. The BB is as smooth silk and creak free.

  6. peter

    Top product, top Service. Will buy again.

  7. Mark Wilson

    Excellent product & great service – ordered wrong bb due to my error, exchanged with no problem.

  8. David

    Masterpiece of craftsmanship – highly recommended – as it is one of the most important parts on the bike! Hambini’s service and knowledge are exceptional!

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Q & A

Hi Hambini, Is it possible to buy only the bbshell and endcaps without the bearings and tools? Br, Florin Florin Miu asked on May 1, 2023

It can only be bought as a built unit, the shell is not available separately but you can by the spare end caps and bearings as spares.

Hambini Engineering answered on May 1, 2023 store manager
(0) (0)
Hey Hambini, you have any recommendation where to go for letting your products being built in in germany. I'm afraid to damage my bike, so i will not install your bb by myself. also dont have all the tools for install. Fabian Mücke asked on April 19, 2023

I'm afraid not. I'm looking at it but nothing is concrete so far.

admin answered on April 24, 2023 store manager
(0) (0)
Is it compatible with a SuperSix Evo my2020? matt asked on December 23, 2021

It should be provided your version is definitely PF30A - some are PF30 and there are no obstructions in the shell.

admin answered on December 24, 2021 store manager
(0) (0)
Could this be used for Shimano XT crankset on a MTB with PF30 (73mm width)? I notice that with the Hambini BB, the non-drive side crank will be a few millimetres more inward than the current bottom bracket but I have sufficient crank clearance. I was just a little concerned that it may not be suitable because the explanation refers only to road cranksets and states it’s almost exclusively found only on Systemsix. Mark C asked on August 16, 2021
(1) (0)
Is it possible to switch between 24 & 30mm crank spindles with this BB by just changing the bearings? matthew asked on August 2, 2021

You would need to change the end caps not the bearings.

admin answered on August 3, 2021 store manager
(0) (0)

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