Used Komatsu PC78US-6 excavator
A compact 6-9t Komatsu machine for export from China. Price follows the exact unit, not the model name.

Komatsu PC78US-6 is not a normal 7-ton excavator for open-field earthmoving. Its value is the zero-tail body and compact structure. It is made for narrow roads, wall-side digging, drainage work, foundations, courtyard jobs, city repair and places where a normal PC60 or PC70 cannot swing easily.
We mainly supply Komatsu PC78US-6. We usually keep around 3 flowing units. Most available machines are repainted before export. Many units come with new track chains and track shoes, but the final undercarriage condition must follow current photos and travel video. Some units have a blade, while some do not, so buyers should confirm the exact machine before quotation.
For used PC78US-6 machines, meter hours are not a reliable way to judge condition. Many machines are old, repaired or repainted, so working hours should only be treated as a reference. The real decision should come from cold start, hot-machine hydraulic response, swing, travel, offset boom condition, undercarriage and serial plate.
PC78US-6 is better for used equipment dealers, local resellers, rental buyers and contractors who have real narrow-space jobs. If the customer only wants cheap general earthmoving, PC60 or PC70 may be easier and cheaper. Do not buy PC78US only because it looks special. Buy it when the jobsite really needs zero-tail swing.
PC78US-8 may be available sometimes, but stock is limited in China. If your market needs newer emission acceptance, smoother hydraulic control or better machine image, ask us to check current PC78US-8 availability. Buyers should still confirm local import rules before purchase.
For Komatsu PC78US-6 specs, use this table as a purchase reference, not as a fixed promise for every unit. Final details should follow the current machine plate, photos and video.
Commonly around 0.28 m³, confirm actual bucket
Mechanical direct-injection generation; confirm engine plate
Many units have new track chains and track shoes
Confirm actual measurement before shipment booking
Narrow roads, drainage, wall-side digging and urban work
PC78US-6 is worth buying when the jobsite is narrow. The short-tail design helps near walls, roads, buildings and foundations. In open fields, PC60 or PC70 may be enough.
Specs to confirm on the machine
What we check before we quote
Engine
Cold start, smoke, idle stability, blow-by and engine plate.
Hydraulics
Boom, arm, bucket, combined movements and pump response.
Swing & travel
Both-side travel, straight walking and final-drive area.
Undercarriage & structure
Chain, shoes, rollers, sprocket, idler, pins and welds.
Where the PC78US-6 fits
Buying notes
Related questions
- Who supplies used Komatsu PC78US-6 excavators from China?
- What is the FOB price of a used Komatsu PC78US-6?
Compare compact 6-9t
Indicative FOB — the exact price follows the unit.
Other compact 6-9t Komatsu

PC60-7
16500-19000 USD
PC60-8
17500-20000USDPC70-11M0
