Excavator undercarriage parts
Excavator Undercarriage Parts from One Specialist Supplier
We are a specialist undercarriage and wear parts supplier, not a single factory. Track rollers, idlers, sprockets, track chains and shoes for 0.8–100 ton machines — each sourced from the partner factory that makes it best, and checked before it ships. MOQ 10 pcs per part number, or 1 set per machine for mini excavators.
Have a part number? Search it, or send us your list.
- Part categories
- 7
- Machine brands
- 13
- Part numbers online
- 95
- Lead time
- 7–25 days
Undercarriage Parts We Supply
Track Rollers
Track rollers carry the full machine weight on the track chain links. Single- and double-flange designs with forged shells and lifetime-lubricated floating seals.
Carrier Rollers
Carrier rollers support the upper strand of the track chain and keep it aligned between the idler and sprocket.
Front Idlers
Front idlers guide the track chain and work with the track adjuster to maintain correct track tension.
Sprockets
Drive sprockets transfer final drive torque into the track chain bushings. One-piece and segment types available.
Track Chains
Sealed and greased track link assemblies (SALT / dry) with through-hardened pins and bushings.
Track Shoes
Single, double and triple grouser track shoes in widths from 500 to 900 mm, plus rubber pads.
Track Adjusters
Track adjuster and recoil spring assemblies that absorb shock and keep track tension within spec.
Popular Part Numbers
Full catalog →
Komatsu PC200-6 Track Roller
20Y-30-00012
Also fits: PC200-5
CAT 320 Carrier Roller
8E-5600, 286-9824
Also fits: 320B, 320C, 320D
Volvo EC80D Front Idler
VOE14520942
Also fits: ECR88, ECR88D, EC80
Hitachi EX200-5 Sprocket
1018740
Also fits: EX200-3
Kobelco SK200-6 Track Chain
YN62D00017F3
Also fits: SK200-5, SK200-8, SK210LC-8, SK200LC-6, SK215SRLC
Komatsu PC300-8 Track Shoe
207-32-61110
Also fits: PC300LC-8
CAT 312B Track Adjuster
136-2367
Also fits: 315B, 315B L
Hyundai R220LC-9 Track Roller
81Q6-11010
Doosan DX225LC-3 Carrier Roller
200105-00038
Hyundai R250LC-9 Front Idler
81N8-13011
Also fits: R290LC-9, R320LC-9, R330LC-9S, HX330L
Volvo EC210 Sprocket
SA1181-00050
Hitachi EX220-5 Track Chain
1021597
Also fits: EX230-5
Why Buyers Choose Us
A specialist for each part
Rollers from a roller factory, chains from a chain factory — not one plant doing everything.
OEM cross-reference
Send any OEM number — we confirm fitment before quoting.
Full set, one shipment
Parts from different factories consolidated and shipped together from Xiamen.
Checked before shipment
We look over every order and send photos on request.
Frequently Asked Questions
Are you a factory?
No. ExcaTrack is a specialist undercarriage and wear parts supplier. We work with partner factories and choose, for each part, the one that makes it best — rollers from a roller specialist, chains from a chain specialist — then check the goods before shipment.
Why not buy direct from a factory?
A factory is usually strongest in one or two product lines. A roller plant rarely makes track chains, and a chain plant rarely makes sprockets. Buying direct often means several suppliers and several shipments; with us you order a full undercarriage from one place, each part from a specialist.
What is your MOQ and lead time?
MOQ is 10 pcs per part number; mini excavator parts (up to 6 t) from 1 set per machine. Lead time is 7–25 days depending on part type and quantity. Ask us which parts are in stock; in-stock items can be bought in batches.
Which excavator brands do your parts fit?
We supply aftermarket parts for Komatsu, Caterpillar (CAT), Hitachi, Kobelco, Doosan / Develon, Hyundai, Volvo, Case, Yanmar, Kubota, Terex, Bobcat, Takeuchi and other brands. Send us the OEM part number or machine model to confirm fitment.
Can you supply a complete undercarriage for one machine?
Yes. Send the machine model or a list of OEM numbers — track rollers, carrier rollers, idlers, sprockets, track chains, shoes — and we quote the full set. Parts from different specialist factories are shipped together in one order.
Do you ship to my country?
We ship by sea from Xiamen and can also arrange air or rail freight. Tell us your destination port and we include freight in the quote.
Can I see the goods before they ship?
Yes. We check each order before it is packed and can send photos and videos on request.
Get a Quote
Tell us the OEM part numbers or machine models and quantities. We check fitment and reply with price, lead time and shipping options.