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Bottom bracket

The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the crankset to rotate freely. It contains a spindle to which the crankset attaches, and the bearings that allow the spindle and crankset to rotate. The chainrings and pedals attach to the cranks. Bottom bracket bearings fit inside the bottom bracket shell, which…

Standards & Measurement

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Interface between spindle and crankset

Crank armsShimanoOpen" standardClamping toolBall joint
13 related topics

Overview

BicycleChainringsSpindleBearingsPedals
19 related topics

Eccentric bottom brackets

EccentricSet screwsTandem bicyclesDropoutsDisc brake
8 related topics

Standards

British Standard
1 related topics

Topics to explore

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Overview

Bottom bracket types

Interface between spindle and crankset

Bottom bracket shell sizes

Bottom bracket height

Eccentric bottom brackets

Standards

Advanced semantic analysis

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Map overview Semantic statistics

Bottom bracket

Nodes56
Edges55
Triples133
Avg. degree1.96
Density0.035714
Components1

How this topic connects Entity context

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Bottom bracket

Top relations

related to Compatibility issues · 21
Bottom bracket → Around, BBR60, Bike, Chris King, Companies, Example BB/PF30, Frame, HollowTech II, In August, ISIS Drive Standard, Many, Now, OEM, OEM Shimano, RaceFace, Shimano, SRAM Corporation, The, This, Truvativ
related to Square taper · 15
Bottom bracket → Although, Asian, Campagnolo, European, It, Nihon Jitensha Shinkokai, NJS, Not, Previously, Shimano, Some, Sugino, The ISO, The JIS, This
related to Shell diameters and threading · 12
Bottom bracket → According, As, Campagnolo, French, Italian, Most, Parktool, Shimano, There, These, This, TPI
related to External bearings · 11
Bottom bracket → BB30, Because, BMX, Cannondale, External, ISO, Italian, Shimano Octalink, Since, The, They
related to Interface between spindle and crankset · 10
Bottom bracket → As, International Splined Interface Standard, ISIS, ISIS Drive, King Cycle Group, Octalink, Race Face, Several, Shimano, Truvativ
related to One-piece (Ashtabula) · 10
Bottom bracket → American, Ashtabula, Bearing, BMX, One-piece, Pro, S-shaped, The, They, With
related to Standards · 10
Bottom bracket → Assembly, British Standard BS, Cycles, Geneva, International Organization, ISIS, ISO, Pedal, Screw, Standardization
related to Shell width and spindle length · 9
Bottom bracket → Early, Italian, Later, Road, Snow, Some, Spindle, Spindles, There
related to Thompson · 8
Bottom bracket → Ashtabula, English, Frames, Italian, The, The Thompson, Thompson, Unlike
related to Eccentric bottom brackets · 4
Bottom bracket → An, Eccentric, Once, The

Important terminology Word statistics

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Important terminology

bottom bracket spindle bearings shell bearing frame brackets standard crank shimano used cranks bicycle also use manufacturers external designs design

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Bottom bracketis aself-contained unit that fits into a plain0.90text
Bottom bracketis abaseline for the rider's height while riding0.90text
the timing chain of tandem bicyclesinstance ofEccentrics are used in applications that require precise chain tension adjustment0.80text
the chain that connects the stoker'sinstance ofEccentrics are used in applications that require precise chain tension adjustment0.80text
captain's cranksinstance ofEccentrics are used in applications that require precise chain tension adjustment0.80text
single-speeds or bikes with an internal-geared hubinstance ofand that do not have an external rear derailleur0.80text
RaceFaceinstance ofCompanies0.80text
Chris Kinginstance ofCompanies0.80text
and Truvativinstance ofCompanies0.80text
HollowTech IIinstance ofShimano creates non-proprietary as well as proprietary bottom bracket designs0.80text
BBR60instance ofShimano creates non-proprietary as well as proprietary bottom bracket designs0.80text
Bottom bracketrelated to Bottom bracket heightThe0.60section

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