Komatsu PC400-8 at $67,000: 40-Ton Production
A used Komatsu PC400-8 from 2020, showing 3,600 hours, is listed at $67,000 FOB. It is a 40-ton production machine with low hours for its year, and it costs more than the 30-ton units. The question is whether the work needs the class.
The listing
| Field | PC400-8 |
|---|---|
| Year | 2020 |
| Hours | 3,600 h |
| Class | 40-ton |
| FOB | $67,000 |
Where 40 tons fits
Quarry production, large earthworks and heavy site preparation. The machine has more reach, bucket capacity and lifting ability than a 30-ton. It needs a matching truck fleet and a site that can use the output.
If the work is general construction, a 30-ton machine can be more practical and cheaper to move. The 40-ton is a production tool, and the PC400-8 price premium needs output to justify it.
What the low hours buy
At 3,600 hours, a used Komatsu PC400-8 should have substantial life left in its major components. That reduces the immediate repair risk compared with a 10,000-hour unit. It does not remove the need to inspect the undercarriage, hydraulics and structure.
Matching the machine to the haul fleet
A 40-ton excavator is only productive if the trucks under it can clear the bucket. Before the price matters, count the haul units you can put on the job and the distance they run. A machine of this class loading a fleet that cannot keep up waits part of every cycle, and that waiting is invisible in the purchase price.
Ask the same question about the loading tool. If the site loads from a stockpile with a smaller machine, the 40-ton may be the wrong end of the chain. Match the dig rate to the move rate, then check whether the site roads and the tip can take the traffic the bigger machine creates.
This is where the class decision gets honest. A 30-ton unit that keeps three trucks moving can beat a 40-ton that leaves them waiting between passes. The bucket is not the bottleneck to measure; the cycle is.
Inspection focus
- Undercarriage: shoes, links, rollers and sprockets.
- Hydraulic pump, cylinders and swing.
- Boom, arm and turret welds.
- Engine cold start and smoke.
- Hour meter and service records.
Transport
A 40-ton unit needs a heavy-machine plan: flat rack, RoRo or breakbulk. Get the dimensions and the route before comparing it with a 30-ton. The freight difference can be significant.
Loading detail before the freight number
Heavy-machine freight is priced from dimensions and weight, and both change once the boom comes off. Ask for the transport height and width as the unit will actually travel, not as it stands in the yard. If the boom stays on, the quote should reflect that. If it comes off, ask who does the work at the port and who refits it at destination.
Ask for the lashing and bedding plan as well. A unit at this weight needs a prepared deck and a written stow, and the port may charge storage while that is arranged. Those costs belong in the comparison against a 30-ton, or the cheaper machine will look cheaper than it is.
Which buyers the used Komatsu PC400-8 suits
It fits a quarry or large contractor that needs production and can handle the transport. It is not a utility machine and not a first purchase for a small site.
Cost per hour: build the model yourself
No listing can tell you what this machine costs to run on your site. Build the number from four inputs: fuel burned per shift at your cycle times, the wear parts your ground conditions consume, the undercarriage life left as measured at inspection, and the value of a day lost if a hydraulic component fails. Price each input locally, then add them.
The exercise is not accounting. It is the only way to compare this unit with a 30-ton at a lower entry price, because the smaller machine may carry more moves per year and the bigger one may carry more fuel per tonne. The answer changes with the site, so the model has to be yours.
Four questions that decide this purchase
Low hours on a 2020 machine answer the wear question, not the fit question. Put these four to yourself before asking for the video.
| Question | What a weak answer tells you |
|---|---|
| Can the trucks keep up with the bucket? | The machine will wait part of every cycle. Production is a fleet figure, not a machine figure. |
| Has anyone checked the route for the transport dimensions? | If not, the freight quote is not the delivered cost, and the difference lands on you. |
| Is there a parts path for this model in your market? | A unit waiting on a pump stops a site. That risk is not in the FOB price. |
| Will it stay on one site long enough? | Short jobs cannot absorb what this class costs to move. |
If all four hold, the class is justified and the inspection decides the unit. If two or more do not, a 30-ton is the better purchase even though this unit is newer and lower-hour.
Questions buyers ask
Are 3,600 hours believable on the used Komatsu PC400-8?
Yes for a 2020 machine, but the wear and records still need checking.
Can you quote CIF?
Yes. Send the destination port and we will quote the heavy-machine loading plan.
Why is it more than a PC300?
Class and year. A 40-ton low-hour machine carries a premium over a 30-ton unit.
Match the class to the production target.
Ask for the cold-start video and undercarriage measurements for the PC400-8.
View the used Komatsu PC400-8 listing · Model page · Request an inspection