The Kobelco SK35SR-2 runs a 300x52.5Kx88 track: 300 mm across the tread, 52.5 mm between links, 88 links around. Cut for digging, trenching, backfill and tight-quarters work and shipped free to the lower 48.
What the numbers mean on a Kobelco SK35SR-2
- 300x52.5Kx88 — 300 mm tread width (about 12"), 52.5 mm pitch, 88 links, K-lug 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 Kobelco SK35SR-2
Size gets the track on the machine; tread decides how it works and how long it lasts. What we stock for this one:
- Directional — digging, trenching and slope work. The standard excavator tread
Undercarriage parts for the Kobelco SK35SR-2
Rollers, idlers and sprockets wear on the same clock as the track. Fitting new rubber over a hooked sprocket or a seized roller is the fastest way to lose the new track — check these while the tracks are off:
- Drive sprocket — SPPW53D01001P1
- Carrier roller — PV64D00001F1
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 300x52.5Kx88 shows up on machines from several makers. If you run any of these alongside the Kobelco SK35SR-2, it is the same belt:
- Case CX31B
- Case CX31BMC
- Case CX31BMR
- Case CX36
- Case CX36B
- Case CX36BMC
- Case CX36BMR
- Case CX36BZTS
- Gehl Z35GEN2
- JCB 8035Z
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.
