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Discussion History

Flatcar Underframe

Assembly

Welded steel flatcar base of center sill and cross members forming the lower deck and carrying the rack superstructure. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Flatcar Underframe parts and their functions

7 top-level parts · 24 parts in total · full bill of materials below
Flatcar Underframe parts diagram: 1 center sill, 2 side sill, 3 cross member, 4 end sill, 5 body bolster, 6 lower deck plate, 7 fastener set. 24 parts in 7 top-level items.
Flatcar Underframe parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Center Sill 1× Longitudinal box center sill
2 Side Sill 2× Edge longitudinal members
3 Cross Member 12× Transverse floor beams
4 End Sill 2× End cross beams with coupler pockets
5 Body Bolster 2× Bogie pivot bolsters
6 Lower Deck Plate 1× Lower deck running surface
7 Fastener Set 4× Structural bolting

3D model

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Build & assembly graph

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Bill of materials for Flatcar Underframe

7 top-level lines · 7 rows shown · 24 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Center Sill auto-rack-railcar-center-sill 1× 1 · part
2 Side Sill auto-rack-railcar-side-sill 2× 2 · part
3 Cross Member auto-rack-railcar-cross-member 12× 12 · part
4 End Sill auto-rack-railcar-end-sill 2× 2 · part
5 Body Bolster auto-rack-railcar-body-bolster 2× 2 · part
6 Lower Deck Plate auto-rack-railcar-deck-plate 1× 1 · part
7 Fastener Set fastener-set 4× 4 · part

Where the flatcar underframe is used

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

Used in 1 assembly

Auto-Rack Railcar

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 $300–$90k. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳BYD
byd.com ↗ 		Shenzhen, CN EV & battery manufacturer made to order ·
🇮🇳Tata Motors
tatamotors.com ↗ 		Mumbai, IN Automaker made to order ·
🇨🇳SAIC Motor
saicmotor.com ↗ 		Shanghai, CN Automaker made to order ·
🇮🇳Mahindra
mahindra.com ↗ 		Mumbai, IN Automaker made to order ·
🇨🇳Geely
global.geely.com ↗ 		Hangzhou, CN Automaker made to order ·