When it comes to mid-size excavators in the 20–23 ton range, two models dominate the job site: the
CAT 320
and the
Komatsu PC210
. Both are industry favorites known for performance, durability, and reliability. If you’re comparing these two to decide which machine is right for your fleet or next job, this side-by-side breakdown will help you make a smart, informed decision.
Power Output and Engine Specs
The CAT 320 is powered by a
Caterpillar C4.4 ACERT diesel engine
, producing up to 172 horsepower. This makes it ideal for high-output tasks like mass excavation, trenching, or heavy material handling. The machine is optimized for smart power use and fuel efficiency, especially when paired with CAT’s built-in electronic systems.
The Komatsu PC210 uses a
Komatsu SAA6D107E-1 diesel engine
with around 165 horsepower. Though slightly less powerful on paper, Komatsu’s engine and hydraulic tuning offer responsive, stable performance in both tight spaces and open site work. It’s a well-balanced machine for contractors who value steady control over raw speed.
Fuel Efficiency and Operating Costs
The Komatsu PC210 is widely regarded as a fuel-efficient machine, thanks to its intelligent work modes and conservative power management. For operators running long shifts or multiple machines, the reduced fuel burn can lead to noticeable savings over time.
The CAT 320 also includes advanced fuel-saving technology, but its higher horsepower output means slightly more fuel usage under heavy load. However, CAT compensates with features like auto idle, engine speed control, and real-time consumption data via the onboard monitor.
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Control Systems and Operator Experience
CAT’s emphasis on operator-assist technology is front and center in the 320. The excavator includes standard features like CAT Grade with 2D, Payload, and optional 3D-ready systems. These tools help improve grading precision and reduce the learning curve for new operators.
While the PC210 doesn’t offer the same level of integrated automation, its intuitive joystick layout, comfortable cab, and responsive controls create a solid operating experience. Komatsu focuses on durability and simplicity, which some contractors prefer over tech-heavy interfaces.
Durability and Maintenance Access
The CAT 320 offers excellent component accessibility with grouped service points, ground-level filters, and integrated fluid monitoring. Its smart diagnostic tools also make it easier to identify problems before they become expensive repairs.
The Komatsu PC210 is built with ruggedness in mind. Many fleet managers praise its long service life and minimal electronics, making it easier to repair in the field. Routine maintenance is straightforward, and many common parts are shared across other Komatsu models.
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Quick Reference: Specs Snapshot
| Specification | CAT 320 | Komatsu PC210 |
|---|---|---|
| Horsepower | ~172 hp | ~165 hp |
| Operating Weight | ~50,000 lbs | ~46,000–48,000 lbs |
| Engine Model | CAT C4.4 ACERT | Komatsu SAA6D107E-1 |
| Fuel Efficiency | Smart Mode with Fuel Monitoring | Selectable Power Modes |
| Technology | Grade Assist, Payload, E-fence | KOMTRAX, Economy Mode |
Final Thoughts: Productivity or Simplicity?
If your focus is productivity, precision, and jobsite automation, the CAT 320 is hard to beat. It delivers excellent return on investment for contractors who need performance, onboard technology, and dealer support in one package.
If you’re looking for a dependable excavator with fewer electronics, easier serviceability, and efficient operation, the Komatsu PC210 is a solid choice. It offers great digging power and proven field performance—especially for fleet owners who prioritize longevity and lower operating costs.
Need Parts for the CAT 320 or Komatsu PC210?
ConEquip Parts supplies new, used, and rebuilt components for both the
CAT 320
and
Komatsu PC210
. Whether you’re replacing a final drive, hydraulic pump, or swing motor, we’re here to help.
Request a quote online
or call
1-716-836-5069
to speak with a heavy equipment parts specialist.
Not sure which part you need?
1-716-836-5069
Our parts experts will match you with the right fit the first time—no guesswork.
