Three-Piece Bogie

Assembly

No photo yet. Seen one of these? Suggest a photo.

Standard three-piece freight truck: two cast side frames and a bolster, two wheelsets on roller-bearing adapters, spring-group suspension with friction wedges, and brake beams with shoes.

Direct parts	7
Total parts	46
Used in	1 assembly
Class	Assembly

Report a problem with this BOM

Standard three-piece freight truck: two cast side frames and a bolster, two wheelsets on roller-bearing adapters, spring-group suspension with friction wedges, and brake beams with shoes. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Three-Piece Bogie parts and their functions

7 top-level parts · 46 parts in total · full bill of materials below

Three-Piece Bogie parts diagram: 1 cast side frame, 2 cast bolster, 3 wheelset, 4 suspension spring group, 5 friction wedge, 6 brake beam, 7 fastener set. 46 parts in 7 top-level items. — Three-Piece Bogie 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	Cast Side Frame	2×	Cast side frames
2	Cast Bolster	1×	Cast bolster
3	Wheelset 4 parts	2×	Axle pressed with two wheels, riding on roller-bearing journals with adapters seated in the side frames.
4	Suspension Spring Group 2 parts	2×	Suspension spring nests
5	Friction Wedge	4×	Damping wedges
6	Brake Beam 2 parts	2×
7	Fastener Set	1×	Bolts, nuts, and washers.

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 Three-Piece Bogie

7 top-level lines · 15 rows shown · 46 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Cast Side Frame	freight-wagon-side-frame	2×	2	·	part
2	Cast Bolster	freight-wagon-bolster	1×	1	·	part
3	Wheelset 4 parts	freight-wagon-wheelset	2×	2	7	assembly
3.1	Axle	freight-wagon-axle	1×	2	·	part
3.2	Monobloc Wheel	freight-wagon-wheel	2×	4	·	part
3.3	Ball Bearing	ball-bearing	2×	4	·	part
3.4	Bearing Adapter	freight-wagon-bearing-adapter	2×	4	·	part
4	Suspension Spring Group 2 parts	freight-wagon-spring-group	2×	2	9	assembly
4.1	Coil Spring	coil-spring	7×	14	·	part
4.2	Spring Seat	freight-wagon-spring-seat	2×	4	·	part
5	Friction Wedge	freight-wagon-friction-wedge	4×	4	·	part
6	Brake Beam 2 parts	freight-wagon-brake-beam	2×	2	3	assembly
6.1	Brake Beam Strut	freight-wagon-beam-strut	1×	2	·	part
6.2	Brake Shoe	freight-wagon-brake-shoe	2×	4	·	part
7	Fastener Set	fastener-set	1×	1	·	part

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

Where the three-piece bogie is used

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

Rail & Transit 1 Freight Wagon

Used in 1 assembly

Freight Wagon

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

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics 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