DuraTrack Dozer Undercarriage, US Stock
Dozer Idlers, In Stock in Texas
DuraTrack idlers for crawler dozers and track loaders, held in US stock in Texas and shipped the same day on orders placed by 4:00pm CT. Listed by make and model for CAT, John Deere, Case, Komatsu and Liebherr machines.
Each idler is a complete cast assembly with a heavy-duty seal group, shaft and brackets, built to OEM specification in ISO 9001 approved facilities.
- Held in US stock, same-day shipping on a 4:00pm CT cut-off
- Complete cast assemblies, shaft and brackets included
- Custom dozer track groups assembled in our Houston workshop
Shipping & Warranty
Get a QuoteIdlers by Dozer Make
Idlers are listed for more than 350 crawler dozer and track loader models, including the CAT D4, D5, D6, D8, D9 and D10, John Deere 450, 550, 650, 700 and 850, Case 550, 650, 750, 850 and 1150, Komatsu D31 to D155, and Liebherr PR734 to PR751. Can not find your machine? Send the make, model and serial number and our team will confirm the idler.
More Dozer Undercarriage Parts from US Stock
Dozer Undercarriage
Complete undercarriage and kitsSALT chains, track groups, rollers and idlers, supplied individually or as half and full kits.
Dozer undercarriage
Dozer Track Chains
Sealed and lubricated (SALT)Oil filled, with internal bushing life up to 50% longer than a greased and sealed chain.
Dozer track chains
Track Groups
SALT chain and shoes, assembled to orderAssembled to order in our Houston workshop and shipped ready to fit.
Track groups
Track Shoes
560mm to 915mm single grouserSingle grouser dozer shoes on heavy-duty baseplates, boron steel, through hardened.
Track shoes
Dozer Top Rollers
Single flange, double flange and shaft typeHeat treated steel casing, sealed and oil filled shaft and bearings, guiding the track over the frame.
Dozer top rollers
Dozer Sprocket Segments
Three or five tooth sectionsForged and through hardened, with tooth profiles induction hardened to over 50RC.
Dozer sprocket segments
Dozer Track Rollers
Single and double flange bottom rollersForged roller shells, heat treated, carrying the machine weight through the track chain to the ground.
Dozer track rollers
Undercarriage Hardware
Grade 12.9 and 10.9, metric and imperialTrack, segment and split master bolts to grade 12.9; sprocket and roller bolts to grade 10.9.
Undercarriage hardwareHow to Identify Your Dozer Idlers
Idlers change between models, and often between serial number ranges of the same model. Five details let our team confirm the right idler before it ships.
| What to check | Why it matters |
|---|---|
| Make, model and serial number | Sets the idler for the machine and the serial number range. |
| Front or rear idler | Some models take more than one idler, so each listing names it by position, wheel diameter or bolt spacing. |
| Links in the track chain | Confirms the chain the idler runs with. |
| Track shoe width | Measured in millimeters. Wide shoes increase idler tread and flange wear. |
| Markings on the old idler | Any numbers on the idler are cross-referenced against our product reference guide. |
Scroll the table sideways to see every column.
Also tell us whether the machine runs a standard undercarriage or a proprietary system such as Cat SystemOne or Komatsu PLUS.
Idler or roller?
How are dozer idlers built?
How does the idler hold track tension?
Dozer Idler Wear: What to Look For
The chain runs round the idlers, so the idlers, chain and rollers wear together. Measure the idlers against new dimensions whenever the undercarriage is measured, so the parts are changed once and together. Our team will tell you what to measure.
- Worn treads and flanges where the chain runs on the idler
- Packed material in the undercarriage, which stops the chain running true
- Track shoes wider than the job needs, which speed up tread and flange wear
- Wear on the chain and rollers at the same time
Run the narrowest shoe that still floats the machine and keep the track at the correct tension.
A full dozer kit adds the idlers, carrier rollers and bottom rollers to the track groups and sprocket segments, so everything wears from the same starting point.
Why Buy DuraTrack Dozer Idlers in the US
Held in US Stock
Dozer idlers held in US stock in Texas, maximizing machine uptime.
Quality Approved
Cast, sealed and built to OEM specification in ISO 9001 approved facilities.
Same-Day Shipping
Order by 4:00pm CT and stocked idlers ship the same day.
Warranty Backed
Three years or 4,000 hours on DuraTrack dozer idlers, whichever comes first.
Dozer Idler FAQs
What is a dozer idler?
Do you stock dozer idlers in the US?
Which dozer makes and models do you cover?
Does my machine take more than one idler?
How do I know my idlers are worn?
Should I replace the idlers with the rest of the undercarriage?
What warranty comes with dozer idlers?
Request a Quote for Dozer Idlers
Send the machine make, model and serial number, with the idler position and the shoe width if you have them. We confirm the idler against our product reference guide, price it, and ship from US stock.
Talk to the Team
Our team confirms the idler, its position and its size before anything ships, so the right part arrives first time. Technical advice comes at no additional cost.
Call Us
Testimonials
Trusted by machinery owners and dealers worldwide, our customers rely on Astrak for quality parts, expert support and lasting performance.