Undercarriage & wear parts
Komatsu PC200 undercarriage parts: identify before you order
PC200 generations and what changed
The PC200 has been built across several generations, and the undercarriage is one of the areas that changed. The dash number in the model designation is the first thing to establish: PC200-5, -6, -7 and -8 do not share every undercarriage component, and regional builds within a generation differ again.
What this means practically: a track roller confirmed for a PC200-6 is not automatically correct for a PC200-8. The model family narrows the search; the serial range confirms it.
Reading a Komatsu serial number
Komatsu serial numbers carry a prefix that maps to a build series, followed by the sequential number. The prefix is the part that matters for parts identification — it tells you which build your machine came from, which is what any supplier needs before confirming an undercarriage part.
Where to find it: on the machine data plate, usually in the cab or on the frame near the boom foot. Photograph the plate — the prefix is often the part that is hardest to read in person and clearest in a photo.
What commonly wears first on a PC200
On a machine in general earthmoving use, the wear order is usually: bucket teeth, then track shoes, then the chain itself, then sprocket and idlers, with rollers last. In abrasive ground the teeth and shoes go much faster; in wet or muddy conditions the roller and idler seals fail before the tread wears.
That ordering matters for ordering: if you are replacing teeth every few weeks and rollers have never been touched, the rollers are not necessarily fine — they may simply not have reached visible wear yet while their seals have already gone.
The PC200 is one of the most common excavator models in the world, which is also why it is the model most often ordered for incorrectly. Within the PC200 family there are several generations and regional variants whose undercarriage components differ.
What the model name does not tell you
"PC200" covers PC200-5 through PC200-8 and beyond, plus regional builds. Track rollers, sprockets and idlers changed between generations even where the machine looks similar. A part confirmed for one generation is not automatically correct for another.
What actually identifies the part
- Serial number. Narrowest reliable starting point — it maps to a build range.
- Casting number on the existing part. More reliable than any catalogue lookup.
- Measured dimensions — shaft diameter, outer diameter, flange spacing for rollers; tooth count and pitch for sprockets.
Common failure: ordering by photo alone
Two rollers that look identical in a photo can differ in shaft diameter by a millimetre or two. That is enough to prevent fitment. Photos are useful for confirming what a part looks like; they are not a measurement.
What we need to confirm a PC200 undercarriage part
- Full model designation including the dash number (PC200-7, PC200-8 …)
- Serial number
- Photo of the casting number on the worn part
- The measurements listed above
Send these to alfrun@gmail.com — we confirm the part number and the fitment basis before quoting. If we cannot confirm, we say so.
Before you order
Send machine make, model, serial number and a photo of the casting mark. We confirm the part number and fitment basis before any price discussion.
Trademark notice
Machine brand names and part numbers are used only to describe fitment and application. We are not an authorised dealer of any machine manufacturer.
Reviewed by Zhonglei M&E parts desk — export trading partner for undercarriage and wear parts. Last updated 2026-11-13.