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The PC78US offers high productivity and efficiency in a compact design. Due to the tight tail design of the PC78US-6, operators can focus on the work in front of them and worry less about rear swing impacts. The rigid boom offers unmatched power and makes tough jobs easy.
Powerful Engine With Turbocharger
The engine is EPA Tier 2 emissions certified.
Powerful swing strength increases work efficiency on slopes.
Two working modes give a choice between extra workload and low fuel consumption.
Extended continuous operation is achieved by a high-capacity fuel tank.
PC78US-6 superior traveling performance also provides higher productivity.
Back fill blade
The PC78US features a standard back fill blade that can quickly and conveniently fill trenches and clear up jobsites.
New pressure-compensated Closed-center Load Sensing System (CLSS)0 hydraulic system HydrauMind
Even when 2 or more actuators are operated simultaneously, the PC78US-6's pressurecompensated CLSS system ensures that each actuator works according to its control input without affecting the size of the load. This gives the operator precise control at all times.
Engine speed sensing=Optimum Power
Power utilized by main pump is adjusted automatically in accordance with the engine speed. That means this computerized system keeps engine speed even under high load condition.
Round form uses Tight Tail and Forward Facing Design
The PC78US design uses a Tight Tail concept for both ends. This makes rotating the machine fast, easy and confident. There is less to worry about in tight space conditions because there is little protrusion from either the tail end or the front end.
Amazing Round Shape Offers the Same Balance and Control Although, the PC78US seems smaller, the excavator still offers the same Komatsu balance, control and power of conventional machines. Another advantage of the rigid boom PC78US besides the power is the forward facing cab. The operator always has a direct line of sight to the bucket, which increases precision, confidence and productivity.

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