Bottom Bracket

Assembly

Aluminium melting crucible casting process.jpg · Commons ↗ Report photo

Press-fit BB386 or threaded BSA bottom bracket with two sealed cartridge bearings carrying the crank spindle.

Direct parts	3
Total parts	5
Used in	1 assembly
Class	Assembly
Status	unverified

Press-fit BB386 or threaded BSA bottom bracket with two sealed cartridge bearings carrying the crank spindle. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Bottom Bracket parts and their functions

3 top-level parts · 5 parts in total · full bill of materials below

Bottom Bracket parts diagram: 1 ball bearing, 2 bottom bracket cup, 3 o-ring set. 5 parts in 3 top-level items. — Bottom Bracket parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Ball Bearing	2×	Sealed cartridge
2	Bottom Bracket Cup	2×	Alloy / nylon cups
3	O-Ring Set	1×	Bearing seals

3D model

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Build & assembly graph

expand / collapse · shared sub-assemblies converge · links to related products · est. labour

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Bill of materials for Bottom Bracket

3 top-level lines · 3 rows shown · 5 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Ball Bearing	ball-bearing	2×	2	·	part
2	Bottom Bracket Cup	cyclocross-bike-bb-cup	2×	2	·	part
3	O-Ring Set	oring-set	1×	1	·	part

Where the bottom bracket is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Bicycles & Cycling 1 Cyclocross Bike

Used in 1 assembly

Frameset

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$200. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇮🇳Bharat Forge bharatforge.com ↗	Pune, IN	Forgings & metal parts	500 pcs	6–10 wks
🇨🇳CITIC Dicastal dicastal.com ↗	Qinhuangdao, CN	Aluminium castings & wheels	500 pcs	6–10 wks
🇮🇳Tata AutoComp tataautocomp.com ↗	Pune, IN	Auto components	500 pcs	6–10 wks
🇸🇬Beyonics beyonics.com ↗	Singapore	Precision metal & mfg	500 pcs	6–10 wks
🇮🇳Sundaram Clayton sundaram-clayton.com ↗	Chennai, IN	Die castings	500 pcs	6–10 wks