Replacement rubber tracks for the JCB 804 mini excavator in 350x52.5x86 — 350 mm wide, 52.5 mm pitch, 86 links. Built for digging, trenching, backfill and tight-quarters work, with free freight to the lower 48.
What the numbers mean on a JCB 804
- 350x52.5x86 — 350 mm tread width (about 14"), 52.5 mm pitch, 86 links
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 JCB 804
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
JCB 804 at a glance
- Operating weight — 7,729 lb
- Engine — 20 hp
Undercarriage parts for the JCB 804
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:
- Carrier roller — T006M027
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 350x52.5x86 shows up on machines from several makers. If you run any of these alongside the JCB 804, it is the same belt:
- Case 35MAXI
- Case CK35
- Case CX35
- IHI T840
- JCB 804PLUS
- Kobelco SK035
- Kobelco SK035-1
- Kobelco SK035-2
- Kubota KX040-4
- Takeuchi TB035
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.
