The Komatsu PC45-1 is listed with more than one build of the same 400 mm track. Match link count to what is on the machine now. Free freight to the lower 48, 24-month warranty.
Komatsu PC45-1 track options
- 400x72.5Kx72 — 400 mm (16") wide, 72.5 mm pitch, 72 links, K-lug guide lugs
- 400x72.5Nx72 — 400 mm (16") wide, 72.5 mm pitch, 72 links, narrow guide lugs
Same tread width on all of them — what changes is pitch and link count, which is set by the sprocket and roller frame. Read the numbers off the inside of the old track rather than going by model year; these were built across more than one undercarriage spec.
Tread choice for the Komatsu PC45-1
Size gets the track on the machine; tread decides how it works and how long it lasts. What we stock for this one:
- All-Terrain — everything in between. A compromise tread when the machine moves between surfaces
Undercarriage parts for the Komatsu PC45-1
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:
- Bottom roller — 20T-30-00071
- Carrier roller — RD411-22900
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 one of these sizes shows up on machines from several makers. If you run any of these alongside the Komatsu PC45-1, it is the same belt:
- IHI 40G-1
- IHI 40GX-2
- Komatsu PC40-7
- Komatsu PC40MR
- Komatsu PC40MR-1
- Komatsu PC40MRX
- Komatsu PC40R
- Komatsu PC40R-7
- Komatsu PC40R-8
- Komatsu PC45
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.
