{"title":"Octalink Bottom Bracket","description":"\u003ch2\u003eMulti-tooth Bottom Bracket for Your Bicycle\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eMulti-tooth bottom brackets replaced square taper bottom brackets in the early 2000s, but they have since been replaced by a more modern and especially lighter technology, the hollow axles. Nevertheless, they are still used on many older bicycles, and they are still widely installed on cheaper bikes or children's bicycles. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eFor this reason, you can buy multi-tooth bottom brackets here, and we will explain how to find the right replacement part for your bicycle.\u003c\/p\u003e\n\u003cp\u003eIn a multi-tooth bottom bracket, the crankshaft runs in a \u003cstrong\u003ecartridge bearing\u003c\/strong\u003e, a completely sealed capsule. The \u003cstrong\u003ecrank\u003c\/strong\u003e is mounted on the left and right.\u003c\/p\u003e\n\u003cp\u003eFor multi-tooth bottom brackets, the term “\u003cem\u003ebottom bracket\u003c\/em\u003e” is actually correct, because the bearing is located inside a bottom bracket shell, the designated opening in the bicycle frame. In hollow axles, the actual bearings are outside on the left and right next to the frame; therefore, these components are not \u003cem\u003ebottom\u003c\/em\u003e brackets, “\u003cem\u003ecrank brackets\u003c\/em\u003e” would be more appropriate.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWhy are multi-tooth bottom brackets better than square taper bottom brackets?\u003c\/h3\u003e\n\u003cp\u003eFour or many? What's better? Quite simply: The more sides the bolt has, the better the contact and the force distribution. So that you can pedal with more torque, \u003cstrong\u003emany sides are better\u003c\/strong\u003e than the four of a square taper system. You can think of it similarly to the difference between a \u003cstrong\u003eslotted screwdriver\u003c\/strong\u003e and a \u003cstrong\u003eTorx\u003c\/strong\u003e key. The larger contact area allows Torx screws to be worked with significantly higher torque, and the same applies to the bottom bracket. The leader in terms of the number of sides is a “\u003cstrong\u003ePower Spline\u003c\/strong\u003e” with a total of 12 sides.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eOctalink – the multi-tooth bearing from Shimano\u003c\/h3\u003e\n\u003cp\u003eIf you are looking for multi-tooth bottom brackets, you will repeatedly come across the term \u003cstrong\u003eOctalink\u003c\/strong\u003e. The Latin number Octa (“eight”) is the namesake of the Octalink. Here, an \u003cstrong\u003eeight-sided\u003c\/strong\u003e holds the crank firmly. The system was developed and built by \u003cstrong\u003eShimano\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv align=\"center\" dir=\"ltr\"\u003e\n\u003ctable\u003e\n\u003ccolgroup\u003e\u003ccol width=\"667\"\u003e\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cmeta charset=\"utf-8\"\u003eThere are now two different versions, \u003cstrong\u003eOctalink V1 and Octalink V2\u003c\/strong\u003e. Attention! The corresponding components are \u003cstrong\u003enot\u003c\/strong\u003e \u003cstrong\u003ecompatible\u003c\/strong\u003e!\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eISIS Multi-spline Bottom Bracket\u003c\/h3\u003e\n\u003cp\u003eTo not leave the market entirely to Shimano's Octalink, some manufacturers (including \u003cstrong\u003eSRAM\u003c\/strong\u003e and subsidiary \u003cstrong\u003eTruvativ\u003c\/strong\u003e) joined forces and launched their own ten-sided system called \u003cstrong\u003eISIS\u003c\/strong\u003e \u003cem\u003e(International Spline Interface Standard)\u003c\/em\u003e.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eThis is how you find the right multi-tooth bottom bracket for your bicycle\u003c\/h2\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cb id=\"docs-internal-guid-89a3df1d-7fff-c4b1-6a52-39f2946d9f0a\"\u003e\u003cspan\u003e↪ When do you need a new bearing and how do you find the right multi-tooth bottom bracket?\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eDoes your bottom bracket make unpleasant noises with every crank rotation?\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e \n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cb id=\"docs-internal-guid-4563babb-7fff-1554-fc11-11187d3460be\"\u003e\u003cspan\u003e➽ You probably need a spare part and have to buy a new bottom bracket.\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSince the bottom bracket is a wear part, it needs to be replaced after a certain period of use. There is a pretty reliable way to find a suitable spare part.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0901\/7085\/1592\/files\/kategorie-fahrrad-vielzahn-tretlager-innenlager_480x480.png?v=1747645291\" alt=\"Multi-spline bottom bracket with size specifications\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cem\u003eHere the manufacturer has provided everything directly on the multi-spline bottom bracket that you need to know to find the right one for your bike. Image© Shimano\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eJust grab your old bottom bracket, it will indicate which size fits between your frame and crank. Here you will find specifications such as the \u003cstrong\u003eaxle length\u003c\/strong\u003e and the \u003cstrong\u003ehousing diameter\u003c\/strong\u003e, which will get you a good step further (both can also be measured with a ruler or caliper). But to ensure that the ordered spare part really fits, you also need to consider the \u003cstrong\u003ethread standard\u003c\/strong\u003e. You will often read BSA or ITA, both are standards that describe the thread with which the bottom bracket is attached to the frame in the bottom bracket shell.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eYou can select these values in our filters, then the suitable items will be displayed.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eA look at the product description can also help, here you will learn, among other things, whether an Octalink multi-spline bottom bracket belongs to series V1 or V2. You can find many more details about purchasing the right bottom bracket in our \u003ca href=\"\/en-pt\/collections\/innenlager\" title=\"Bottom Brackets\"\u003e\u003cstrong\u003ebottom brackets\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e ","products":[{"product_id":"shimano-bb-es51-octalink-innenlager-68-mm-bsa-118-mm","title":"BB-ES51 OCTALINK bottom bracket 68 mm BSA 118 mm ","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eColor: Silver\u003c\/li\u003e\n\u003cli\u003eMaterials: Aluminum (Housing), Steel (Axle)\u003c\/li\u003e\n\u003cli\u003eHousing widths: 68 mm \u003c\/li\u003e\n\u003cli\u003eAxle lengths: 118 mm \u003c\/li\u003e\n\u003c\/ul\u003e ","brand":"Shimano","offers":[{"title":"Default Title","offer_id":50593139261704,"sku":"E-BBES51B18","price":30.53,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/7085\/1592\/files\/bb-es51-octalink-bsa-innenlager-68-mm-bsa-bc-1-37-118-mm-147954.jpg?v=1736885507"},{"product_id":"shimano-105-bb-5500-octalink-trapas","title":"105 BB-5500 Octalink bottom bracket ","description":"\u003cul\u003e\n\u003cli\u003eColor: Silver\u003c\/li\u003e\n\u003cli\u003eMaterials: Aluminum (Housing), Steel (Axle)\u003c\/li\u003e\n\u003cli\u003eHousing widths: 68 mm (BSA), 70 mm (ITA)\u003c\/li\u003e\n\u003cli\u003eAxle lengths: 109.5 mm, 118.5 mm\u003c\/li\u003e\n\u003cli\u003eWeight: 251 g (68x109.5 mm), 267 g (68x118.5 mm), 253 g (70x118.5 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with: FC-5500, FC-5501, FC-5502, FC-6500, FC6503\u003c\/li\u003e\n\u003c\/ul\u003e ","brand":"Shimano","offers":[{"title":"118 mm \/ BSA 68 mm","offer_id":50597956583688,"sku":"1504101528CS02","price":37.98,"currency_code":"EUR","in_stock":true},{"title":"118 mm \/ ITA 70 mm","offer_id":50597956616456,"sku":"1504101528CS04","price":48.9,"currency_code":"EUR","in_stock":false},{"title":"109.5 mm \/ BSA 68 mm","offer_id":50597956649224,"sku":"1504101528CS01","price":39.5,"currency_code":"EUR","in_stock":true},{"title":"109.5 mm \/ ITA 70 mm","offer_id":50597956681992,"sku":"1504101528CS03","price":48.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/7085\/1592\/files\/105-bb-5500-octalink-innenlager-141720.jpg?v=1736942996"}],"url":"https:\/\/www.bike-mailorder.com\/en-pt\/collections\/bottom-bracket-spline.oembed","provider":"Bike-Mailorder","version":"1.0","type":"link"}