PF30 to Shimano Classic Bottom Bracket

(25 customer reviews)

£186.00 (£155.00 ex VAT)

This bottom bracket is designed to interface a Shimano 24mm Hollowtech 2 Crankset (Sora, Tiagra, 105, Ultegra, Dura Ace) with a bike frame that uses a PF30 Bottom Bracket (46mm Nominal Inside Diameter X 68mm Wide).

Available on back-order

SKU: PF30-Shimano-Classic Category:

Description

This bottom bracket is designed to interface a Shimano 24mm Hollowtech 2 Crankset (Sora, Tiagra, 105, Ultegra, Dura Ace) with a bike frame that uses a PF30 Bottom Bracket (46mm Nominal Inside Diameter X 68mm Wide).

  • 6061 Aluminium Alloy (Most corrosion resistant aluminium alloy available)
  • Polished aluminium finish
  • Aerospace tolerances, guarantee a no slop fit with good retention
  • One Piece design is inherently creak free
  • Bearings from NTN, NSK, SKF, Koyo or FAG/INA
  • No Hammers to install or remove
  • Fully serviceable Design, the bearings are designed to be replaced quickly and easily
  • 1 year warranty on the bottom bracket body
  • Supplied with fitting adaptors, a press or studbar in M12 size will be required
  • All Hambini one piece bottom brackets require obstruction free access to your bottom bracket shell Click Here for Bike Specific Application guide

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 to Aerospace tolerances using Aerospace materials by an Aerospace Engineer.

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.

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 removed and serviced in situ. Essentially the bottom bracket has been designed to be fully rebuildable

Please click on the reviews to get more opinions

Spin Test

Spin tests are not good measures of friction as the bearings are unloaded but this video highlights the benefit of good bearing alignment on friction and bearing life. This particular bottom bracket had completed 10,000km.

Comparative Friction

The graphs below show 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.

Average Power Consumption - Hambini, CeramicSpeed, Kogel, Praxis

The high torque and low RPM of pedalling causes high Hertzian contact stressing 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.

A Hambini BB is a one piece bottom bracket. It actively contributes to the stiffness of the bike’s pedalling 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.

Bottom Bracket Stiffness Comparison Hambini, CeramicSpeed, Kogel, Praxis

Installation

For installation, you will require a bottom bracket press or a piece of M12 studbar and some nuts. A video showing the method of installation is linked below, the picture and text installation guide is available here

Removal

For removal, you will require a bottom bracket press or a piece of M12 studbar and some nuts. A video showing the method of removal is linked below

Service

Hambini Bottom brackets are designed so you can service the wearing component (the bearings) quickly and easily. The bottom bracket service procedure is shown below

Design Process

The process through which Hambini Bottom Brackets are designed is shown in the video below


Frequently Asked Questions

I have rounded up some of the most frequently asked questions that I get asked and put them in the list below

Q. Why are Hambini Bottom Brackets more expensive than everybody else?

A. Hambini Bottom Brackets are made in the UK where costs are considerably higher than the far east. Additionally as a private individual, I do not have the economies of scale that contract manufacturing companies are able to obtain.

Q. What is the difference between a Hambini Bottom Bracket and a mass market bottom bracket?

A. From a technical perspective, mass market bottom brackets are made to poorer tolerances and are therefore more likely to creak or result in poor bearing life. They are also designed to look aesthetically pleasing but compromise on areas which you cannot see (such as the fits, bearings and heat treatement). Hambini Bottom brackets are completely machined as opposed to moulded (Shimano/SRAM/Plastic). The Hambini Bottom Bracket tolerances are typically 10x tighter than Shimano/SRAM/Rotor/RaceFace/Token. Mass market bottom brackets often use poor quality bearings from the far east to maximise their margin. As an example, the bearings on Hambini Bottom Brackets (which are typically NTN) cost more than an entire bottom bracket from RaceFace/Token/SRAM.

Q. Why don’t you use Ceramic Bearings?

A. I have found ceramic bearings to have poor performance in bicycle applications. The ceramic bearings are not 100% ceramic, they are hybrid. A Hybrid bearing consists of ceramic balls sandwiched between a steel innner and outer race. The ceramic balls have a tendency to cut a groove into the steel and this results in poorer performance after only a few 100km. The majority of friction (>80%) in a bearing comes from the seal, grease and cage type. The ceramic balls make up a small fraction of the friction and have the negative effect of rapid bearing degradation. These are the main reasons I do not supply bottom brackets with ceramic bearings

Q. What is the difference between the Racing editions and the standard units?

A. The Racing Bottom brackets are made with superior materials, they are stiffer and slightly lighter. Racing bottom brackets are equipped wih low friction bearings. Racing bottom brackets have approximately 20 percent less friction than Classic units. The total friction is very small and would be difficult to notice when riding but nonetheless there is a measurable difference

Q. How long will the bearings last?

A. I cannot place a life on the bearings as life is largely dictated by the conditions they are subjected to. Having high loadings will increase their rate of wear as will riding in wet conditions. The bearings in all Hambini Bottom brackets are branded and meet minimum ISO standards so they are the best that are commercially available. Typical usage will be somewhere in the region of 2000km to 10,000km. As an example, those who watch my youtube channel will know my fastidious maintenance schedule which consists of weekly jet washing – I change the bearings twice a year, ie 8000km between changes. Due to the low speeds involved keeping them clean is more important than keeping them greased.

Additional information

Crankset Type

Shimano

Frame

PF30

25 reviews for PF30 to Shimano Classic Bottom Bracket

  1. Jesper S

    I don’t know why i wasted my time with multiple rotor and token bottom brackets. This is miles better. Installation took me about 10 minutes, it comes with the bearings installed and i just pressed the entire cartridge in. Technical support is very good. Every question answered, often in minutes.

  2. Pete Olgenssen Miami FL

    Normally, I don’t leave reviews but this experience is worthy of an exception. The purchasing experience was truly fantastic. I asked a few questions around fitting and I was provided with drawings and sketches to see if it would fit. Once this was out of the way, the BB arrived in FL 7 days later. I stupidly fitted it incorrectly by leaving the delrin piece in when pushing it in. Make sure you don’t do that. I contacted Hambini, he sent me a replacement bearing and tool to swap them out free of charge. Despite being in the US, it was sent UPS express so I wasn’t without the bike. I can’t thank him enough.

  3. Maxgh1978

    5 stars from me. Cured all of my problems and crank spins so freely

  4. oshkosh

    After bottom bracket issues on my Cervelo R3, I found Hambini performance engineering. After watching the you tube videos of the one piece bottom bracket made by Hambini, who also rides a Cervelo,I knew this would sort out my creaking issues. I ordered a complete bottom bracket. I received an invoice and was pleasantly surprised that all fitting/removal parts were included. Delivery to South Africa took a while but received everything intact. Installed product 7/3/2017 and have ridden 280 km since without a problem.

  5. Mket

    Hideously expensive but miles better than anything else out there. I tried them all, Enduro, Wheels MFG, Praxis. Not a patch on this one.

  6. MikeD

    Items came in a recycled brown box. Once opened, you can see this is a quality product. It really does soon like butter. The gaps between the dust shields are tiny but they don’t rub. Installation in my cannondale frame was straightforward and riding afterwards has been a pleasure. Excellent product.

  7. Asmin James

    Very well made and super stiff. bearings are like butter. Thoroughly well engineered and technical support to match.

  8. Barry Grayson, Cleveland OH

    The delivery was super quick. 5 days from ordering to my mailbox with the standard service. I had a few questions and these were answered quickly. The bottom bracket is crazy. I have never seen machining like this, The NTN bearings are very good. First class. I would recommend. Good YT channel too. Thankyou Hambini

  9. Cameron Brady, Billings MT

    Great looking product and functions well. Very high machining quality.

  10. Simon Owen

    Lovely… Just lovely… creak free happiness. I had wasted my time with Wheels MFG adpators, ceramicspeed and Token. This beats them all hands down.

  11. dathers

    Fantastic piece of engineering, a little bit expensive, hence only 4 stars for value, however I suspect overtime this bracket will prove to be an excellent purchase

  12. rirwin

    Easy to install and is beautifully machined! Took it out for a short spin and everything felt a little stiffer as I pedaled.

  13. dazmug

    Easy to install. Very satisfied.

  14. Ken Close

    I recently got back into bike racing, having been away for a while. Along with a few new trends I was greeted by the unpleasant surprise of push fit bottom brackets. I was going through bottom brackets like they were going out of fashion before I got this one. Well designed, well machined, it is beautiful.

  15. Miranda Forster

    Couldn’t ask for more, Everything was perfect.

  16. MegaEXOMan

    Good BB, very slick service, easy install.

  17. Harvey866

    The quality of this cannot be faulted. First class engineering, works well and is a joy to ride. However all of this comes at a price and I’m not sure it is worth it. The service here is good. It’s one of the advantages to dealing with a technical guy.

  18. Velluthulai

    I bought my cannondale from Sigma cycles in London with the bike 2 work scheme and had no end of problems with it. Sigma didn’t really have a shit by the end and I was left scratching my head. My work colleague recommended Hambini as his son is an Engineer that works with him at Airbus. I contacted him, he sent me the bottom bracket and due to my apprehension a press so I could install it. It was very easy and straightforward to do. I was so impressed with the press, I bought that as well. Hambini’s attention to detail and customer service are both excellent. You pay a slight premium for a Hambini BB but it spins like no other and has service levels to match.

  19. Rivdae

    Ordered on Saturday, arrived at my house in LA on Friday. I fitted it over the weekend and wow! This has been made by someone at the top of his game. Rides well, full gas no creaks, feels way more rigid than before. My only regret is not buying one for my other bike to save shipping.

  20. Cyril Canvaroue

    I previously used 2 sets of plastic adaptors and they always ended up coming out about 2 mm on each side of the bottom bracket shell after a few rides. Also the bearings would not last .
    So after watching a few hambini videos I decided to buy that metal masterpiece.
    It was very easy to fit following his video instructions.
    It looks neat and precise. Also feels stiffer than the plastic crap I had before.

  21. I Nyoman Naya

    Appreciate provided close communication on the product selection and what is coming with it. Installation is a snap and performance is instantly recognized. The machining is top quality and it is obvious that QC was performed closely to the allowed tolerance.
    My suggestion is to provide more economical shipping alternative to Jakarta Indonesia… Thanks.

  22. richard karmann

    fantastic bottom bracket which is super smooth with creak free stiffness . a quick delivery, which was also easy to install following Hambini’s video.

  23. OG

    You want a real engineering? I surely appreciate such. A year ago I have bought the PF30 to Shimano Classic Bottom Bracket so you may well take my comment as a small review. The BB has seen Summer, Winter, salt, rain, grime, dirt, abuse, removal, installation, bearings replacement, and still runs smooth as day 1. Ok, it might be “just a shell”, yeah, well at least that “shell” does it’s purpose very good. My experience working with bikes for over 25 years, allows me to humbly share my opinion that Hambini’s BBs are the best, at least for shimano. I can also compare it to other manufacturers, one being BBInfinite, again PF30, which does the job good but they are simply not on the level of Hambini.
    Another very important thing, Hambini does care for the small guy as well, obvious from his patience to reply/answer, explain, give advice and support when needed!
    Thank you sir!

  24. Rafal Lapszewicz

    Thank you hambini for all your help.

  25. Terence Bailey

    This is a quality product!!!
    Had problems with BB hole being under size, Hambini sent a video link that showed how to rectify the problem.
    What this guy does not know isn’t worth knowing!!!

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