Hambini Racing BB30 Bottom Bracket SRAM GXP Crankset (Black)
£295.00 Ex. VAT
This bottom bracket is designed to interface a SRAM GXP Crankset with a bike frame that uses a BB30 Bottom Bracket (42mm Nominal Inside Diameter x 68mm wide).
Available on backorder
Description
This bottom bracket is designed to interface a SRAM GXP Crankset with a bike frame that uses a BB30 Bottom Bracket (42mm Nominal Inside Diameter x 68mm wide).
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.
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.
Popular support topics:
- Installation of a Pressfit Hambini Bottom Bracket
- Servicing of a Hambini Bottom Bracket (Bearing Service)
- Removal of a Hambini Bottom Bracket
Still need some help?
You can contact support on support@hambini.com or use the Contact Form
3 reviews for Hambini Racing BB30 Bottom Bracket SRAM GXP Crankset (Black)
Q & A
It won't work with hollowgram.
it won't fit, I'm afraid, because the BB30A is necked.
ONly if you have the GXP variant of SRAM force. Some of them are BB30
About 140g
Jonathan Mannah –
“Hambini is a genius”. I quote my friend who is a genius fabricator and avid cyclist himself. We fit the bottom bracket to my bike and it is amazing what a difference even I could feel (and i’ve only been riding for 1.5yrs)! I will be saving up to buy another one for my other bike. I will be comparing routes and PR’s over the next month to see how it stacks up. I’m sure it will!
In short, every cyclist should have a Hambini BB.
We’re just waiting for a BB for the Pinarello f12/SRAM setup… (nudge nudge) hehe
Thanks Hambini! 100% satisfied!
Anonymous –
Christoph Herrmann –
As far as I can measure and judge so far, the bottom bracket is perfect, exactly as I expected it to be. I can’t judge whether the price is justified. I have no idea how much effort it takes to manufacture it to this quality. The lack of physical documentation of the assembly and maintenance instructions is no problem at all, as long as the information is available on your website. The packaging could be more loving. I like the fact that there is no logo or other advertising on your product, no bullshit at all. I would find it appropriate to include a basic tool for changing the bearings. In my opinion, the small part that engages inside the bearing, is sufficient, most people will have a suitable screw or can at least get one with minimal effort to pull the bearings out using the delrin cup you add for pulling the bb into the frame. Please let me know, where I can get it. Of course I want use your bb for the rest of my life & will it be necessary to change the bearing one day, since I’m only 57 at the moment 🙂