Volvo ECR40D tracks and undercarriage, sized 300x52.5Wx84 (300 mm wide × 52.5 mm pitch × 84 links). Made for digging, trenching, backfill and tight-quarters work. Free freight, 24-month warranty.
What the numbers mean on a Volvo ECR40D
- 300x52.5Wx84 — 300 mm tread width (about 12"), 52.5 mm pitch, 84 links, wide guide lugs
Width is the tread face, pitch is the distance between drive lugs, and links is the count around the loop. All three have to match — a track one link off will not tension correctly no matter how close the width is.
Tread choice for the Volvo ECR40D
Size gets the track on the machine; tread decides how it works and how long it lasts. What we stock for this one:
- Staggered Block — mixed dirt and gravel. Block stability with better cleanout than a straight block
Volvo ECR40D at a glance
- Operating weight — 9,800 lb
- Engine — 36 hp
Parts we carry for the Volvo ECR40D
Tracks. Call for anything not shown online — we can usually source it.
How these wear
Excavator undercarriages load one side hard on slew and travel, so link cracking usually shows up before the tread wears out. Replace in pairs where you can: a new track running against a stretched one loads the drive unevenly and you will feel it in the steering.
Same track, other machines
Track size follows undercarriage geometry, not brand, so 300x52.5Wx84 shows up on machines from several makers. If you run any of these alongside the Volvo ECR40D, it is the same belt:
- CAT 303.5
- CAT 303CR
- CAT 303E CR
- CAT MM35B
- CAT MM35T
- Case CK36
- Ditch Witch MX35
- Gehl 353
- Gehl 373
- Gehl 383Z
Not sure which you are running? Read the size off the inside of the old track, or call (850) 816-7898 and we will pull it off the machine record. The Track Finder works by make and model too.
