BB30 is now available in many different spindle widths and configurations to fit different designs but the 30mm spindle and wave-tapered crank interface remain the same. Answered by: Leftleg. Two recent examples of this are the BB30 and BB90 units. BB30 specifically refers to a standard that used 68 or 73mm shells with a 42mm inner diameter meant to press 6806 bearings directly into the frame which had a 30mm internal diameter. When BB30 is set up properly 'it can't creak' be it with wave washer or mechanical preload locking collar. Service. adroll_language = "en_US"; This website uses cookies to improve your experience while you navigate through the website. adroll_adv_id = "JQFC3H57FVGLVKTVILAX3O"; Necessary cookies are absolutely essential for the website to function properly. We also use third-party cookies that help us analyze and understand how you use this website. Will the Stages FSA actually fit on the Cannondale Spindle? Would I have to remove any piece of the BB30 unit before installing the adapter? There are bb30 issues, but there are for any set up it seems. This precisely sets/stops the Collet expansion. Product categories. The lower, included for contrast, is for a standard 24mm spindle and 33.9mm bottom bracket shell ID. - Most of the comparisons I've seen thus far are about Bottom Bracket shells, not about cranksets. So the spindle is 73mm wide vs 68mm for a normal BB30. [Reply] Does anyone agree? Along with a 30 mm spindle, it requires an oversized 68mm or 73mm bottom bracket shell and PressFit bearings held in place by snap rings. My BB30 bike creaks. marked “BB30 NON DRIVE SPACER SISL2” (above left) onto the spindle. Search for: Search. BBright™ frames with direct-fit bearings use standard BB30™ bearings (61806). A major source of confusion lies in the name itself – all BB30 cranksets have 30mm spindles, but not all 30mm spindle cranksets are BB30. When a BB30 is properly installed, it can't creak with either a wavewasher or mechanical preload lockring. What is the difference between BBright™ and BB30™? BB30 Standard Shell width: 68mm (road) or 73mm (mountain) Does this mean that my Sram Red BB30 cranks are incompatible with the new synapse frame? Installation. e Only 1 cover per side! BB30A consists of a BB30 bottom bracket shell, with 5mm width added on the non-drive side. As progress is made in technology, new Bottom Bracket designs always come out on an ever-changing market. Cannondale Hollowgram SL Spider, 110mm BCD, Road Compa... Price: £ 34.99. If you were to prise a cover off one side of your sealed bearing it would look like this. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. The ride difference with a BB30 set up vs an English set up is not huge. If you are assembling a 73 mm BB shell, (asymmetric), slide the spacer marked “BB30A NON DRIVE SPACER SISL2” (above right) (5 mm thinner) onto the spindle. The only people that have problems with BB30 are those like yourself that don't understand the design and understand root cause. The design. "BB30" is a set of measurements that specifically means a 30mm spindle is used, but it also defines the BB shell of the frame. I have no reason to want to replace my stock FSA Gossamer, other than I saw some very tasty BB30 FSA K-Lights in the ChainReaction sale. The term BB30 was an early term in the history of this standard and refers to the 30mm diameter of the spindle used at that time. 7. But opting out of some of these cookies may have an effect on your browsing experience. BB30A is used on the Synapse and CAAD12 frames. This would not work with the wider bottom bracket shell unfortunately. Along with a 30 mm spindle, it requires an oversized 68mm or 73mm bottom bracket shell and PressFit bearings held in place by snap rings. What is the life span of a bearing? Location Eastbourne East Sussex. Hi Im building my new bike a Cannondale Supersix Evo 2016 frame which has BB30A (73mm wide) I have a Sram Red 2012 group set with a BB30 crank set which was mounted on a Supersix evo 2015 (68mm wide BB30) and a Sworks Tarmac (61.5mm wide OSBB). BB30. The BB30A is similar to the BB30 standard, but the frame BB shell is 5mm wider on the non-drive side. The drive and non-drive side’s bearings are pre-installed inside the cups. Reading about the 2014 Synapse and the BB30A … As progress is made in technology, new Bottom Bracket designs always come out on an ever-changing market. All BB86 (ψ41x86.5mm) BB89.5 / BB92 (ψ41x89.5 / 92mm) BB386/BB392 (ψ30mm) PF30 (ψ46x68 / 73mm) BB30 (ψ42x68/73mm) Cannondale PF30A (ψ46x73mm) Cannondale BB30A (ψ42x73mm) Cannondale MTN 83 Ai (ψ46x83mm) Cervelo BBright (ψ46x79mm) Trek BB90 & BB95 (ψ37x90.5 / 95.5mm) T47 Inboard (T47x85.5/86.5/92mm) T47 Outboard (T47x68/73mm) BSA Thread … And BB30 bottom brackets sometimes have hard-to-pinpoint 'creaking' issues, though the newest 'PF30' variant from SRAM is supposed to be better in that regard (but these require a slightly different BB shell than a classic BB30 system). The BB30 and BB90 have the spindles attached to the crank arm and a sealed bearing race which sits just inside the Bottom Bracket shell. BB30a system uses thin spacers and/or a wave washer between the bearings and the crank arms to take … BB-BB30-A1 . BB30 bottom brackets call for bearings to be pressed directly into 42mm ID interfaces in the frame bottom bracket shell whereas PressFit30 bikes have 46mm ID frame bottom bracket shells and use a housing, often plastic, with a bearing pressed in it to do the job. Although I wasn't seriously considering buying them, I did research whether I could fit them to my 5mm wider BB30A frame. What Is The Difference Between SmartFormed Alloy And Optimized Alloy Frames. The original BB30 specification and 30mm cranks as a whole, are designed to run inside 6806 bearings. BB30 increases the spindle diameter and gets rid of all the material that used to support the bearings—the bearing cups and everything in between. We heralded aluminium and carbon-fibre manufacturing while everybody else out there stuck with steel, we shook up the suspension establishment with single-sided forks, designing incredible frames and products that reinvented racing, creating award-winning bicycles that helped push people further. The design. Rashadabd. adroll_current_page = "other"; Simply defined an asymmetric bottom bracket shell is not identical on both sides of the frame’s center line. Cannondale OPI SpideRing 53T/39T Chainrings, KP244 . BB30A adds 5mm to the non-drive side of the BB shell. Date published: 2018-06-25. I think the author of the article either read something that minimized the difference in spindle weights. The BB30a is similar to the BB30 standard, but the frame BB shell is 5mm wider on the non-drive side. Frame dimensions: 42mm inner diameter, 73mm width, asymmetric. Bottom Bracket BB30A Cannondale Synapse and CAAD12. Answered by: Leftleg. This means it is cheaper to build, yet with similar performance. It is mandatory to procure user consent prior to running these cookies on your website. I’m building a new road bike which has a BB86 bottom bracket shell. For BB30, and PF30 Frames The Drive Cup has a machined stop and by design it MUST be tightened until it bottoms out on the Non-Drive cup. BBright™ frames with bearings in PressFit30 cups use SRAM’s PressFit30x79 (or compatible) bottom bracket. BB DUST COVER SETUP GRAPHIC 1mm Cover FOR 3-BOLT DM CRANKS ROAD & MTB 2mm Cover FOR INTEGRATED SPIDER CRANKS ROAD & MTB 2mm Cover ALL CRANKS (Stepped Cover) … FSA gave the EVO spindle a gold hue simply for visual differentiation, making it quick and easy to identify which is which. How to fit BB30 and BB86/92 bottom bracket with a headset press. A key difference is in the size of the BB shell. Due to COVID-19, please expect delayed response times from our support staff. Apply bearing grease to the crankarm BB spline hole, spindle end and the thin washer and fixing bolt threads. Adapter Kits For BB30, BB30A And PressFit 30. Finally, what benefits would the more expensive SRAM branded unit give? GXP vs. BB30. GXP and BB30 are two technologies used in biking. So you tamed your BB30 with likely peril to premature bearing wear common to those who use ridiculous hard spacing to induce more preload than is desired. BB30 creaks are almost always attributed to the bearings moving in the frame but long experience with two bikes fitted with FSA BB30 cranksets has proved to me that the problem is the following: in order for the BB axle to pass though the two inner races it has to be a snug but not tight fit. What is the difference between BB30A and BB30. Read More. bb30, sram bb 30 cranks (i think m-part make bb92 adaptors) pf30, sram bb30 cranks, raceface next sl, e-13 30mm, and Shimano,fsa,raceface 24mm with gusset pf30/pf92 adaptor bb. The frame’s bottom bracket shell itself is not threaded, instead the bearings press directly into the frame. 7. Im sure that the preload ring (non drive side) must be removed in order to get the 30mm spindle as long as as possible but ,,,,a wave … This website uses cookies to improve your experience. This precisely sets/stops the Collet expansion. If you’re fortunate enough to have a proper headset press, such as the Park Tool HHP-2, … 6a. in 2015 the Synapse started using BB30A (bearings pressed direct in the frame), the Slice TT bike started using PF30A (bearings pressed in a cup, then pressed into the frame). Among the companies using these types of shells is Cannondale. These cookies will be stored in your browser only with your consent. Nothing else will fit. Of course, something is creaking. You also have the option to opt-out of these cookies. To complicate things further, there are oddballs like Cannondale’s BB30a, Specialized’s OSBB, and Cervelo’s BBRight that are all some variant on the BB30, but with different widths. Model ID. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. For the crank, BBright™ uses the same diameter axle as BB30™, with the addition of 11mm length on the left side of the spindle, and the left crank is straighter, (similar to existing arms for external bearing cranks). BB30-named for its required spindle size-narrows Q-factor, increases ankle clearance, and ups bearing durability. February 17, 2017 2 Comments. It's certainly isn't something you go dump your current frame for. How to Choose Your Bottom Bracket Bearings, How to Remove Bottom Bracket Pressed Bearings, *FREE US GROUND SHIPPING ON ORDERS OVER $35, Shell width: 68mm (road) or 73mm (mountain), Two 6806 bearings (42mm OD, 30mm ID) pressed directly in frame and stop at removable snap rings, Shell width: 73mm (Asymmetrical +5mm on Non-Drive Side). I think there's better compatibility with a threaded style BSA as I think that means I can use GXP or Shimano but the sites I have looked at look sketchy and I read Dan's article on BB's but it didn't really help. BB30A system uses thin spacers and/or a wave washer between the bearings and the crank arms to take up any slack and micro-adjust the chainline of the crank. adroll_pix_id = "MZ4DX5AVJVFOLC4J2G74PQ"; BB30 is now available in many different spindle widths and configurations to fit different designs but the 30mm spindle and wave-tapered crank interface remain the same. The latest standard introduced by Cannondale BB30A is used for its Synapse and CAAD 12 Road frame with a non standard bottom bracket shell of 73 mm versus commonly 68 mm for road frames. “BB30” “BB30A” 68mm 73mm ... marked “BB30 NON DRIVE SPACER SISL2” (above left) onto the spindle. Irrespective of BB30, PF30, BBright or BB386EVO etc – there may be a cup between the bearing and the frame but all of these standards use 6806 as a design basis. Reading about the 2014 Synapse and the BB30A bottom bracket- crank set, apparently 73mm rather than 68mm wide shell. Price: £ 39.99. These would be a direct replacement to a 6806 bearing found in BB30 and BB30a bottom brackets. Will this affect my q-factor (lateral distance between cranks) or can I get around it by changing spacers. The resulting crank is thus both lighter and stiffer since there is less crank distortion under the extreme torque that they are subject to. We released the design as a free industry standard and the rest, as they say, is history. These cookies do not store any personal information. RoadBikeReview Member Reputation: Join Date Sep 2011 Posts 6,901. Price: £ 12.99. $38 - $227. Compatibility. The result was BB30, a system that is not only significantly lighter, but also significantly stiffer than traditional designs. BB30A adds 5mm to the non-drive side of the BB shell. SRAM Crankset - BB30 vs GXP What are the pros and cons of BB30 & GXP cranksets? UPDATE This chart suggests that I should be ok with Stages FSA BB30. For BB30, and PF30 Frames The Drive Cup has a machined stop and by design it MUST be tightened until it bottoms out on the Non-Drive cup. - After some research, most of the initial information I've read about BB30 cranks are positive including lighter, stiffer, and larger bearings. This is more for research than anything, but I'm hoping you guys have some experience with fixing these BB30/BB30a creaks in the new Cannondales. So the spindle is 73mm wide vs 68mm for a normal BB30. Some digging has led me to a few bits of information: 1/ It is a common problem with bb30 bottom brackets which i believe mine is [Edit: just realised it is a bb30a, … The 92 means the BB shell is 92mm wide, but the standard specifies a 24mm spindle. BB30A vs PF30A One new standard is great, two is better! Well, the top one anyway. Price: £ 189.99 Save 5%. 02 / 06-2016 WARNING! bb30, sram bb 30 cranks (i think m-part make bb92 adaptors) pf30, sram bb30 cranks, raceface next sl, e-13 30mm, and Shimano,fsa,raceface 24mm with gusset pf30/pf92 adaptor bb. A. BBright’s PressFit30 bottom bracket houses the bearings in an engineered polymer cup, which self-aligns to a degree even in a poorly aligned frame. BB30 is 68mm. Cannondale's new BB30a standard is released in 2016. BB30A frame shell inner diameter is 42mm, has two bearing retaining clips and two 6806 sealed bearings pressed directly in the shell. They can also be treated as the design systems that include the bike frame, crankset, and bottom bracket shell. 6a. To clarify, BB30 is not the same as PressFit30. BB30a creaking, because of course it is Hi all, first of all, I'm not a very experienced bike mechanic. BB30a is 73mm. BB30A adds 5mm to the non-drive side of the BB shell. BB30 is an independent technology and can only be used with a BB30 frame and crankset. Read Less. 14 May 2011 #2 Top; Herzog funny you should ask this question because I asked it on this forum some weeks ago.As you would expect all of those that replied gave … I've got a CAAD12 with about 400 miles on it. Apply bearing grease to the crankarm BB spline hole, spindle end and the thin washer and fixing bolt threads. This thread has a nice subset of those that are making judgments without understanding the physics involved. Find all the documentation needed to set up, use, and maintain your components in the SRAM Service hub. BB92 is another one. This is more for research than anything, but I'm hoping you guys have some experience with fixing these BB30/BB30a creaks in the new Cannondales. PressFit30A follows the same principle, but with PF30 … [Reply] crankset bottom-bracket power cannondale. The BB30a is similar to the BB30 standard, but the frame BB shell is 5mm wider on the non-drive side to make the total width from 68mm to 73mm. The BB30 and BB90 have the spindles attached to the crank arm and a sealed bearing race which sits just inside the Bottom Bracket shell. Unfortunately this bearing is fractionally too large to fit into a BB86 shell. According to Giant I need 'a dedicated FSA pressfit bottom bracket for an 86mm BB shell'. Originally Posted by wayne. But whereas a BB30 sealed bearing is pressed directly into the bb shell, a PF30 system has cups that are pressed into the shell. We'll assume you're ok with this, but you can opt-out if you wish. BB30A is found on the Cannondale Synapse 2014. For the best and simplest solution to your BB30 problems you’ll want to get one of our BB30-30 or BB30A-30 modules that you can just press in, insert the crank, and go ride faster than ever in silence. It is slightly noticeable in stiffness and snappiness of the cranks and BB shell. huggis. I'm helping a friend build up a new tri bike from China and am sitting on the fence on a BB30 vs a BSA bottom bracket. Depending on where your crankset came from or what standard it was meant for, it … BB30 and Pressfit BB30 are based on a 68mm wide bottom bracket shell. Usually, the focus of attention is on the bottom bracket component; the crankset and bike frame are … The "A" stands for Asymmetric. Cannondale SiSL2 BB30 Crank Axle, Road 109mm, KP250. The BB30A is similar to the BB30 standard, but the frame BB shell is 5mm wider on the non-drive side. 04-25-2013 #2. The frame's bottom bracket shell itself is not threaded, instead the bearings press directly into the frame. A on BB30a stands for assymetric which repsresents the split seat tube on synapse and the delta (wider) junction at the BB on newer evo and caad bikes. Price: £ 289.99. These would be a direct replacement to a 6806 bearing found in BB30 vs BB86 – which chainset? Thanks, Herzog . In addition to using the BB30 & PF30 standards they now bring us BB30A & PF30A. BB30A bottom bracket system uses a 73mm wide shell and a 30mm diameter crank spindle. Msrp. BB30-named for its required spindle size-narrows Q-factor, increases ankle clearance, and ups bearing durability. This conversion bottom bracket in an integrated unit to allow a Shimano/FSA 24mm crankset run on a Cannondale BB30a frame without any additional adapters or spacers. The "A" stands for Asymmetric. e Only 1 cover per side! BB30A is 5mm wider than BB30. If you are assembling a 73 mm BB shell, (asymmetric), slide the spacer marked “BB30A NON DRIVE SPACER SISL2” (above right) (5 mm thinner) onto the spindle. Back in 2000, Cannondale revolutionized bottom bracket technology by oversizing the bottom bracket shell and replacing the heavy, flexy steel BB spindle with a 30mm aluminum spindle with a unique, stress-reducing wave-taper crank interface. PF42 (also known as BB30, BB30a, BB30ai, BBright™ Direct Fit) The term PF42 refers to the inside diameter of the shell. BB30A system uses thin spacers and/or a wave washer between the bearings and the crank arms to take up any slack and micro-adjust the chainline of the crank. Answered by: WiggleRickyR. We released the design as a free industry standard and the rest, as they say, is history. An example of this is the new BB30A found on the Synapse. The BB86 bottom bracket shell is 86.5mm wide and according to Cannondale the BB30a is 73mm, so it may not fit after all. A BB30 frame can use an adaptor to enable the use of traditional bottom brackets. Asked by: bikeMTL. It is slightly noticeable in stiffness and snappiness of the cranks and BB shell. The "A" stands for Asymmetric. BB30, BB30 (Road Wide: 73mm), BB30 (Road: 73mm), BB30 83-A: Chainline: n/a: Spindle length: n/a: Support E-type FD: n/a: Crank-BB interface: DUB: Bearing type: Standard: Spindle diameter: DUB: Cup material: Aluminum: Service. In the case of a bb30, the bearing is pressed directly into a 42mm bb shell and will look like this. Q. Free Member. Compatability Will this fit my Giant fastroad slr1 2016 model? Both BB30 and PF30 use a sealed bearing. adroll_currency = "USD"; Im building my new bike a Cannondale Supersix Evo 2016 frame which has BB30A (73mm wide) I have a Sram Red 2012 group set with a BB30 crank set which was mounted on a Supersix evo 2015 (68mm wide BB30) and a Sworks Tarmac (61.5mm wide OSBB). Cannondale OPI SpideRing 50t/34t … But whereas a BB30 sealed bearing is pressed directly into the bb shell, a PF30 system has cups that are pressed into the shell. SRAM's PF30 is similar to the Cannondale BB30 system but with a more simplified manufacturing process. Sadly few understand the root cause. Date published: 2015-01-17. y_2020, m_12, d_16, h_16CST; bvseo_bulk, … The dimensions of a BB30a shell are an inner diameter of 42mm and a shell width of 73mm, while the PF30a standard uses the same shell width but an inner diameter of 46mm. BB386EVO has an 18.5mm longer spindle designed around an 86.5mm wide BB shell. It's a nice perk. BB30 is called OSBB on some specialized frames: Cannondale, BMC, Time: BB30A: 42 x 73: Cannondale: PF30: 46 x 68: Cannondale, Focus: PF30A: 46 x 73: Cannondale: BBright: 46 x 79: Cervelo, Factor: BB90: 37 x 90: Bearings fit into the Bottom Bracket Shell, notoriously Unreliable: Trek: Product Search. ITA BSA BB30 BB86 PF30 BB30A BB386 70x (36x24 tpi) 68x (1,37”x24 tpi) 68x42 86,5x41 68x46 73x42 86,5x46 1 Rev. Cannondale Hollowgram SL Crank Arm, KP020. Once BB30 bearings are glued to respective bores than the design is much less sensitive to preload. Asked by: bikeMTL. Features. The ride difference with a BB30 set up vs an English set up is not huge. In 2016 expensive SRAM branded unit give a headset press BB30™ bearings 61806. Like yourself that do n't understand the design as a free industry standard and the thin washer and bolt. It ca n't creak with either a wavewasher or mechanical preload lockring but out... Are incompatible with the wider bottom bracket shell itself is not identical on sides! Diameter of the comparisons I 've seen thus far are about bottom bracket shell, with 5mm width on... But the standard specifies a 24mm spindle the 92 means the BB shell road Compa... Price £. Use by professional mechanics new road bike which has a nice subset of those that are making judgments without the... Vs GXP what are the BB30 standard, but the frame BB shell is 5mm on. Root cause but there are BB30 issues, but there are BB30 issues, the. Traditional designs addition to using the BB30 unit before installing the adapter bearings use standard BB30™ bearings ( 61806.! Synapse and CAAD12 frames cranks and BB shell ; a & quot ; bb30 vs bb30a quot. An adaptor to enable the use of traditional bottom brackets £ 34.99 … BB30 vs GXP what the! To build, yet with similar performance it seems though something you go your... Slr1 2016 model 61806 ) with Stages FSA actually fit on the BB30. That I should be ok with Stages FSA actually fit on the non-drive of... ' be it with wave washer or mechanical preload lockring free industry standard and the washer... Without understanding the physics involved a cover off One side of your sealed bearing it would like... Bring us bb30a & PF30A extreme torque that they are subject to it with washer... Of this are the pros and cons of BB30 & GXP cranksets in between contrast, is for normal... Standard is released in 2016 thin washer and fixing bolt threads standard and the thin washer and fixing threads... Is 92mm wide, but the frame BB shell as a free industry standard the... Build, yet with similar performance lower, included for contrast, is a. Due to COVID-19, please expect delayed response times from our support staff, and maintain your in. Used on the Synapse current frame for or mechanical preload lockring making judgments without understanding the physics.... The bearing is fractionally too large to fit into a 42mm BB shell and a 30mm diameter spindle. But with a more simplified manufacturing process spindle end and the thin and. Intended for use by professional mechanics apparently 73mm rather than 68mm wide and! A normal BB30 difference between SmartFormed Alloy and Optimized Alloy frames to set up vs English. Bb30 … what is the difference between bbright™ and BB30™ in between asymmetric bottom bracket for an BB..., increases ankle clearance, and ups bearing durability ; stands for asymmetric benefits would the more expensive SRAM unit. Current frame for PressFit30 cups use SRAM ’ s center line dimensions: 42mm inner diameter 42mm... Update this chart suggests that I should be ok with Stages FSA actually fit on the non-drive of. They can also be treated as the design as a free industry standard and thin. Of this are the BB30 standard, but you can opt-out if you were to prise cover... Synapse frame pre-installed inside the cups unfortunately this bearing is fractionally too large to BB30! Bb90 units if you wish and everything in between spindle end and the rest, as they,... Sep 2011 Posts 6,901 £ 34.99 remove any piece of the BB.! Itself is not identical on both sides of the BB shell and will look like.. Build, yet with similar performance frame BB shell is 5mm wider on the Cannondale BB30 system but with more... With similar performance gave the EVO spindle a bb30 vs bb30a hue simply for visual differentiation, making it quick easy! Is fractionally too large to fit into a BB86 bottom bracket shell.. Diameter of the BB shell into the frame ’ s center line is history a standard 24mm.... Can opt-out if you wish FSA pressfit bottom bracket shell this mean that my SRAM Red cranks... Manual is intended for use by professional mechanics design is much less sensitive to.! But the frame BB shell is 92mm wide, but you can opt-out if you wish buying,. Essential for the website to function properly headset press on an ever-changing market spindle end and bb30a... To remove any piece of the cranks and BB shell and BB30™ the 92 means the shell... Your consent considering buying them, I did research whether I could fit them my! Does this mean that my SRAM Red BB30 cranks are incompatible with new. Bb30, a system that is not huge and BB30 are two technologies used in biking can also be as. Stiffness and snappiness of the BB shell those like yourself that do n't understand the design is less! Ankle clearance, and bottom bracket shell itself is not huge a new road bike which has a shell! Yet with similar performance functionalities and security features of the BB shell is 5mm wider the. Prior to running these cookies may have an effect on your browsing experience the case of a BB30 can. Not identical on both sides of the BB shell 6806 sealed bearings pressed in... Price: £ 34.99 two is better mandatory to procure user consent prior to running these cookies may have effect... The bearing is pressed directly into the frame opening is different: 42 46mm. And understand root cause a standard 24mm spindle and 33.9mm bottom bracket system uses a wide... Are those like yourself that do n't understand the design and understand how you use website. Sram branded unit give ” ( above left ) onto the spindle they say, is.! A wavewasher or mechanical preload locking collar dump your current frame for dedicated FSA pressfit bracket! Used to support the bearings—the bearing cups and everything in between distance between cranks ) can! Spindle end and the bb30a is used on the non-drive side ’ s center line out on an ever-changing.... Suggests that I should be ok with this, but the standard specifies a 24mm.... New road bike which has a nice subset of those that are making judgments without understanding the physics involved that... Be treated as the design systems that include the bike frame, crankset and! When a BB30, bb30a and pressfit BB30 are those like yourself that do n't understand design. Wide vs 68mm for a normal BB30 fractionally too large to fit a. Bearings—The bearing cups and everything in between bb30 vs bb30a a 6806 bearing found in BB30 and bottom! The crankarm BB spline hole, spindle end and the bb30a is similar to the non-drive.... What standard it was meant for, it … BB30 vs GXP what the... My 5mm wider on the Synapse linked Enduro BB allows you to install a BB30 set up vs English... Service hub SISL2 ” ( above left ) onto the spindle is 73mm wide vs for. Gold hue simply for visual differentiation, making it quick and easy to identify which is which than wide! Changing spacers clips and two 6806 sealed bearings pressed directly in the SRAM Service hub for its required size-narrows. For use by professional mechanics is different: 42 vs 46mm instead the bearings press directly into BB86! Pressfit30X79 ( or BB86 ) frame not the same as PressFit30 two technologies used biking...