DuraTrack Undercarriage
Excavator Undercarriage Parts
The DuraTrack range comprises crawler undercarriage components manufactured in OEM production facilities to rigorous OEM standards. All DuraTrack products are fully tested and inspected to ensure correct fitment, durability, consistent quality and assured performance.
The range covers excavators from 0.8 to 80 tonnes: track chains and assembled track groups, track shoes, sprockets, bottom and top rollers, idlers, track adjusters and hardware. The undercarriage wears as one system, so a free inspection measures every component before we quote. Dozer parts are on the dozer undercarriage page.
- One of the largest undercarriage stock holdings in Europe
- Single components, half kits, full kits or a complete undercarriage
- Free undercarriage inspection with a measured wear report
- Next-working-day UK delivery from stock
Delivery & Warranty
Get a QuoteUndercarriage Parts by Component
Nine wearing components, each manufactured to OEM specification. Select a component to browse parts by machine make and model.
Track Chains
101mm to 260mm pitchGreased and sealed excavator chains with polyurethane seals from 140mm pitch, dry chains below. Easy fit and press fit master pins.
Track chains Browse track chains by machine
Track Groups
Chain and shoes, assembled to orderFully assembled track groups with bespoke chain and track shoe configurations to suit specific requirements. All 101.6mm pitch chains are supplied as welded groups.
Track groups
Track Shoes
300mm to 1200mm triple grouserHeavy duty rolled Boron steel profile, through hardened and stress relieved, for standard, heavy-duty and LGP applications.
Track shoes
Sprockets
1 to 50 tonne machinesCast steel with external tooth profiles induction hardened to over 50RC for extended wear life.
Sprockets Browse sprockets by machine
Bottom Rollers
Single and double flangeEngineered to transfer machine weight through the undercarriage to the ground. Forged roller shells, heat treated, on hardened forged alloy or rolled carbon steel shafts.
Track rollers Browse bottom rollers by machine
Top Rollers
Carrier rollers, including shaft typeGuide the track over the undercarriage frame. Reinforced flanges and heavy-duty sealing systems extend wear life. Single flange, double flange and shaft type.
Carrier rollers Browse top rollers by machine
Idlers
Complete cast assembliesCast idler assemblies produced to OEM specification, complete with heavy-duty seals, shafts and brackets.
Idlers Browse idlers by machine
Track Adjusters
Recoil spring assemblies, nearly 300 excavator modelsOEM specification track adjuster assemblies for all major excavator models: tensioning piston, spring pack and yoke, available from stock.
Track adjusters Browse track adjusters by machine
Hardware
Grade 12.9 and 10.9, metric and imperialTrack bolts and nuts to Grade 12.9; sprocket and roller bolts to Grade 10.9. All forged from alloy steel and heat treated to OEM standards.
Undercarriage hardwareDozer undercarriage, SALT chains and conversion kits have their own page: Dozer undercarriage.
Undercarriage Wear and Inspection
Each wearing component sets the wear rate of the components it runs against. A worn sprocket shortens the life of a new chain, and one new roller among worn ones wears faster than the set it replaced. Four measurements determine most replacements: chain stretch, rail height, grouser height, and roller and idler tread wear.
- Chain stretch. Measured across four or five pin centres against the new specification. On a 50 link chain, 1mm of pin wear plus 1mm of bush wear adds around 100mm to the overall length.
- Sprocket wear. Compared against an unused sprocket of the same type. Sharp or hooked teeth let the chain jump, which shock loads the final drive.
- Rollers. Change all bottom rollers together. One new roller among worn ones stands proud and carries more than its share of the load.
- Shoe width. Use the narrowest shoe that still gives adequate flotation. Excess width accelerates bush, sprocket, link and roller wear and loosens hardware.
Four operating habits extend undercarriage life: dig over the idlers rather than the sprockets, keep the track correctly adjusted, keep the undercarriage clear of packed material, and reverse as little as the job allows. Excavator chains are designed to wear less travelling forwards.
What we need to identify your undercarriage
How to measure grouser height
Stock, Quality, Delivery and Warranty
Large Stock Availability
A complete range of DuraTrack undercarriage components held in stock to suit all makes and models of excavator, maximising machine uptime.
Quality Approved
Manufactured to OEM specification in ISO 9001 approved facilities.
Fast Delivery
Place your order before 4:30pm and it will be despatched for delivery the next working day, with delivery reliability of 95% on time in full.
Warranty Backed
18 months on DuraTrack excavator track chains. Track adjusters 12 months when fitted with a new idler, with technical support included.
Undercarriage Services
Undercarriage inspection, workshop assembly and on-site fitting are provided across the UK.
Free Undercarriage Inspection
A free inspection of any excavator, from mini to quarry class. We measure every undercarriage part and give you a written wear report with the corrective actions.
Book an inspectionExchange Track Group Service
Exchange groups held in stock for immediate despatch. Quality used shoes at the equivalent grouser height to yours, fitted to new DuraTrack chains in our workshop, delivered to site and the removed groups collected.
How the exchange service worksOn-Site Fitting
A nationwide network of approved plant fitters, so the machine does not have to travel. A full undercarriage swap can be done in one to two days. Workshop rebuilds are handled from our own facilities.
Fitting and workshop servicesUndercarriage Questions, Answered
What parts make up an excavator undercarriage?
Should I replace the whole undercarriage or just the worn part?
Half kit, full kit or single parts?
Why does my machine keep throwing a track?
What warranty comes with undercarriage parts?
Can you fit undercarriage on site?
How quickly can you deliver undercarriage parts?
Do you supply mini excavator undercarriage?
Get a Quote for Undercarriage Parts
Send the machine make, model and serial number, with the roller count, link count and shoe width if you have them. We check the parts against our product reference guide, price them, and despatch from stock.
Speak to the Team
Undercarriage inspections and technical advice come at no additional cost.
Call Us