The IHI 40GX runs a 400x72.5Wx70 track: 400 mm across the tread, 72.5 mm between links, 70 links around. Cut for digging, trenching, backfill and tight-quarters work and shipped free to the lower 48.
What the numbers mean on a IHI 40GX
- 400x72.5Wx70 — 400 mm tread width (about 16"), 72.5 mm pitch, 70 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.
Parts we carry for the IHI 40GX
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 400x72.5Wx70 shows up on machines from several makers. If you run any of these alongside the IHI 40GX, it is the same belt:
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.
