Excavator
8 photosKomatsu · Excavators
Komatsu PC78US-11 Compact Excavator
The Komatsu PC78US has an operating weight of 17,813 lb and a 67.9 hp engine, with a maximum dig depth of 12.5 ft.
Updated October 2026
67.9 HP17,813 lbsSmall Class
How much is a used Komatsu PC78US worth?
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Used price
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4 photosAbout the Komatsu PC78US-11 Compact Excavator
The Komatsu PC78US-11 Compact Excavator is a small-class excavator. Versions you'll see on the used market include the PC78US-6, PC78US-10, PC78US-11.
Owners mostly put it to work on excavation, trenching, light demolition.
Specifications
Engine & Power
- Engine
- Komatsu 4D92E
- Horsepower
- 67.9 HP
- Fuel Tank
- 33 gal
Dimensions & Weight
- Operating Weight
- 17813 lbs
Performance
- Max Dig Depth
- 12.5 ft
- Max Reach
- 19.8 ft
- Bucket Capacity
- 0.29 cu yd
- Tail Swing
- Standard
Configuration
- Size Class
- Small
Weight, power, and capacity figures checked October 2026 against PC78US-11. Older or newer generations of this model may differ.
Model Generations
PC78US-6PC78US-10PC78US-11
Common Applications
- Excavation
- Trenching
- Light demolition
Popular Attachments
ThumbQuick CouplerBreaker
Common Configurations
Standard Boom
How It Compares
| Spec | Komatsu PC78US-11 Compact Excavator | CAT 308 Small Excavator | Kubota KX080-4 Compact Excavator |
|---|---|---|---|
| Engine HP | 67.9 HP | 69 HP | 62.3 HP |
| Op. Weight | 17,813 lbs | 20,771 lbs | 18,520 lbs |
| Max Dig Depth | 12.5 | 13.1 | 15.1 |
| Est. Price Low | — | $19,000 | $55,000 |
| Est. Price High | — | $56,000 | $135,000 |
Against the CAT 308, the Komatsu PC78US is 2,958 lb lighter, has 1.1 less hp and has 0.6 ft less max dig depth.
Against the Kubota KX080, the Komatsu PC78US is 707 lb lighter, has 5.6 more hp and has 2.6 ft less max dig depth.
Frequently Asked Questions
How much does the Komatsu PC78US weigh?
The Komatsu PC78US has an operating weight of 17,813 lb and a 67.9 hp engine. Cab, counterweight, tracks, and attachments can move the real weight of a given unit up or down from this spec figure, so check the serial plate or the OEM spec sheet for the exact build before booking transport.
How much is a used Komatsu PC78US worth?
No price data yet. Get an offer for a real number.
Where can I sell my Komatsu PC78US?
Send HeavyDutyYard the year, hours, and condition of your Komatsu PC78US and we reply within one business day. We make cash offers on some machines; otherwise we list yours free on the HeavyDutyYard marketplace, where we review every listing and screen buyer messages before they reach you. Transport is coordinated when we buy.
What is the Komatsu PC78US used for?
The Komatsu PC78US-11 Compact Excavator is commonly used for excavation, trenching, light demolition.