
DuraTrack Dozer Undercarriage, US Stock
Dozer & Bulldozer Sprocket Segments
DuraTrack sprocket segments for crawler dozers and track loaders, held in US stock and shipped the same day on orders placed by 4:00pm CT. Listed by make and model for CAT, John Deere, Komatsu, Case and Liebherr machines.
Each segment is forged and through hardened, with tooth profiles induction hardened to over 50RC, and built to OEM specification in ISO 9001 approved facilities. Sections of three or five teeth bolt on individually, so a worn section is changed without removing the track.
- Held in US stock, same-day shipping on a 4:00pm CT cut-off
- Grade 12.9 segment bolts shipped with the segments
- Custom dozer track groups assembled in our Houston workshop
Shipping & Warranty
Sprocket Segments by Dozer Make
Segments are listed for more than 350 crawler dozer and track loader models, including the CAT D6, D8 and D9, John Deere 700, 750 and 850, Komatsu D61, D65 and D155, Case 650, 750 and 850, and Liebherr PR734 and PR736. Can not find your machine? Send the make, model and serial number and our team will confirm the segment.
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
Idlers
Front and rear, complete cast assembliesCast idler assemblies with heavy-duty seal groups, shafts and brackets.
Idlers
Track Rollers
Single and double flangeForged roller shells, heat treated, on hardened shafts with heavy-duty seals.
Track rollers
Carrier Rollers
Single flange, double flange and shaft typeGuide the track over the undercarriage frame, with reinforced flanges and heavy-duty seals.
Carrier 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 Sprocket Segments
Segments change between models, and often between serial number ranges of the same model. Five details let our team confirm the right part before it ships.
| What to check | Why it matters |
|---|---|
| Make, model and serial number | Sets the segment for the machine and the serial number range. |
| Teeth per segment | Segments come in sections of three or five teeth and the two are not interchangeable. |
| Bolt holes per segment | The new segment has to match the bolt pattern of the one coming off. |
| Chain pitch | The segment pitch has to match the chain, or the bushings will not seat in the teeth. |
| Markings on the segment | Any numbers cast into the old segment 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.
Segmented sprocket or one-piece sprocket?
Which bolt grade do segments use?
Sprocket Segment Wear: What to Look For
Hold an unused segment of the same type against the worn one. The original tooth profile is the part that has worn away, so a side by side comparison shows the loss more clearly than any measurement of the old part alone.
- Hooked teeth that are no longer symmetrical
- Sharp or pointed tooth tips
- Track chain slipping or jumping the segments under load, which shock loads the final drive
- Flat spots on the chain bushings where the teeth run
- Packed material between the teeth stopping the bushings from seating
Running in reverse and in high gear speeds up segment wear, and so do track shoes wider than the job needs. Run the narrowest shoe that still floats the machine and keep the track at the correct tension.
Segments and chain set each other's wear rate. Measure both before you buy, so the parts are changed once and together. Our team will tell you what to measure.



Why Buy DuraTrack Sprocket Segments in the US
Held in US Stock
Dozer sprocket segments held in US stock, with segment bolts and SALT chains to go with them, maximizing machine uptime.
Quality Approved
Forged, through hardened and built to OEM specification in ISO 9001 approved facilities.
Same-Day Shipping
Order by 4:00pm CT and stocked segments ship the same day.
Warranty Backed
Minimum 12 months on DuraTrack sprocket segments. Three years or 4,000 hours on DuraTrack SALT dozer chains, whichever comes first.

Bulldozer Sprocket Segment FAQs
What is a bulldozer sprocket segment?
Do you stock dozer sprocket segments in the US?
Which dozer makes and models do you cover?
How do I know my sprocket segments are worn?
Should I replace the segments and the track chain together?
Do you assemble dozer track groups in the US?
What warranty comes with dozer sprocket segments?
Request a Quote for Dozer Sprocket Segments
Send the machine make, model and serial number, with the number of teeth and bolt holes on each segment if you have them. We confirm the segment against our product reference guide, price it, and ship from US stock.
Talk to the Team
Our team confirms the tooth count, bolt pattern and pitch before anything ships, so the right segment arrives first time. Technical advice comes at no additional cost.
Testimonials
Trusted by machinery owners and dealers worldwide, our customers rely on Astrak for quality parts, expert support and lasting performance.
