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Undercarriage (Track Frame) parts and their functions

8 top-level parts · 290 parts in total · full bill of materials below

#	Part	Qty	What it does
1	Track Chain (link assembly) 3 parts	1×
2	Track Shoe (grouser)	45×	Grouser shoes per chain
3	Track Roller (lower) 4 parts	7×
4	Carrier Roller (upper) 4 parts	2×
5	Front Idler Wheel 4 parts	1×
6	Track Recoil Spring	1×	Coil spring absorbing track shock.
7	Track Tension Adjuster 3 parts	1×
8	Track Frame (roller frame)	1×

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Build & assembly graph

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Bill of materials for Undercarriage (Track Frame)

8 top-level lines · 26 rows shown · 290 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Track Chain (link assembly) 3 parts	crawler-tractor-track-chain	1×	1	180	assembly
1.1	Track Link	crawler-tractor-track-link	90×	90	·	part
1.2	Track Pin	crawler-tractor-track-pin	45×	45	·	part
1.3	Track Bushing	crawler-tractor-track-bushing	45×	45	·	part
2	Track Shoe (grouser)	crawler-tractor-track-shoe	45×	45	·	part
3	Track Roller (lower) 4 parts	crawler-tractor-track-roller	7×	7	6	assembly
3.1	Roller Shell	crawler-tractor-roller-shell	1×	7	·	part
3.2	Roller Shaft	crawler-tractor-roller-shaft	1×	7	·	part
3.3	Oil Seal	oil-seal	2×	14	·	part
3.4	Ball Bearing	ball-bearing	2×	14	·	part
4	Carrier Roller (upper) 4 parts	crawler-tractor-carrier-roller	2×	2	6	assembly
4.1	Roller Shell	crawler-tractor-roller-shell	1×	2	·	part
4.2	Roller Shaft	crawler-tractor-roller-shaft	1×	2	·	part
4.3	Oil Seal	oil-seal	2×	4	·	part
4.4	Ball Bearing	ball-bearing	2×	4	·	part
5	Front Idler Wheel 4 parts	crawler-tractor-front-idler	1×	1	6	assembly
5.1	Idler Shell	crawler-tractor-idler-shell	1×	1	·	part
5.2	Roller Shaft	crawler-tractor-roller-shaft	1×	1	·	part
5.3	Oil Seal	oil-seal	2×	2	·	part
5.4	Ball Bearing	ball-bearing	2×	2	·	part
6	Track Recoil Spring	crawler-tractor-recoil-spring	1×	1	·	part
7	Track Tension Adjuster 3 parts	crawler-tractor-track-adjuster	1×	1	3	assembly
7.1	Hydraulic Adjuster Cylinder	crawler-tractor-adjuster-cylinder	1×	1	·	part
7.2	Grease Tension Valve	crawler-tractor-grease-valve	1×	1	·	part
7.3	O-Ring Set	oring-set	1×	1	·	part
8	Track Frame (roller frame)	crawler-tractor-track-frame	1×	1	·	part

Where the undercarriage (track frame) is used

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

• Construction & Earthmoving 1 Crawler Tractor

Used in 1 assembly

Crawler Tractor

Sourcing: possible vendors

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

Vendor	HQ	Specialty	MOQ	Lead 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	·