BOMwiki the bill-of-materials encyclopedia
30,454,201 parts mapped · 193,225 items
Discussion History

Crankset

Assembly

Three-piece tubular chromoly or aluminum cranks, 165-180 mm, splined to a 19/22/24 mm spindle. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Crankset parts and their functions

3 top-level parts · 5 parts in total · full bill of materials below
Crankset parts diagram: 1 crank arm, 2 crank spindle, 3 crank bolt. 5 parts in 3 top-level items.
Crankset parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Crank Arm 2× Tubular chromoly or 2-piece forged aluminum arm, 165-180 mm, with a spline interface to the spindle and a pedal-thread eye.
2 Crank Spindle 1× Heat-treated chromoly axle (19, 22 or 24 mm) joining the two crank arms through the bottom-bracket bearings.
3 Crank Bolt 2× High-tensile bolt clamping each crank arm to the spindle splines under pedaling torque.

3D model

No 3D model yet. Have a CAD file of this? Add a 3D model. STL renders right on this page; STEP, FreeCAD, and OpenSCAD sources are welcome too (openly licensed, like all 3D models on BOMwiki).

Build & assembly graph

expand / collapse · shared sub-assemblies converge · links to related products · est. labour
product / assembly shared across products atomic part related product

Tap an assembly to expand/collapse · tap a part to open it · use “Open page” for any node · drag to pan, scroll to zoom.

Bill of materials for Crankset

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 Crank Arm bmx-race-bike-crank-arm 2× 2 · part
2 Crank Spindle bmx-race-bike-spindle 1× 1 · part
3 Crank Bolt bmx-race-bike-crank-bolt 2× 2 · part

Something wrong in this list? Report a problem with this BOM.

Where the crankset is used

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

Used in 1 assembly

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–$100. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳Foxconn
foxconn.com ↗
Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
flex.com ↗ Singapore Electronics contract mfg 1,000 pcs 6–10 wks
dixoninfo.com ↗ Noida, IN Electronics contract mfg 1,000 pcs 6–10 wks
bydelectronic.com ↗ Shenzhen, CN Electronics contract mfg 1,000 pcs 6–10 wks
🇸🇬Venture Corp
venture.com.sg ↗
Singapore Electronics contract mfg 1,000 pcs 6–10 wks