1. Powerful and Efficient Engine:
Typically equipped with a Komatsu SAA4D95LE-5 or similar turbocharged diesel engine.
This engine is renowned for its low fuel consumption and high reliability, and complies with stringent emission regulations (such as Euro III/Tier 3).

2. Key Advantages:
Precise and Smooth Control: Complex movements (such as simultaneous boom, arm, and swing) are well-coordinated and less prone to stuttering, making it particularly suitable for delicate work.
Energy-Efficient: The system only provides the flow and pressure required to perform the movement, reducing unnecessary hydraulic losses and thus lowering fuel consumption.
Sensitive Responsiveness: The operator enjoys excellent "feel" and high efficiency.

3. Sturdy and Reinforced Structure:
Major structural components, such as the lower frame, upper frame, boom, and arm, are reinforced using high-strength steel.
Reinforcement at key stress concentration points effectively prevents cracking, extending the service life of the entire machine, making it particularly suitable for heavy-duty operations and harsh environments.

4. Reliable Travel and Slewing System:
The integrated travel motor and reducer design offers a compact structure, high driving force, and excellent gradeability.
The slewing mechanism boasts high torque, smooth starting and stopping, and precise positioning.

5. Easy and Cost-Effective Maintenance:
Centralized maintenance points (such as grease fittings, oil filter, fuel filter, and pilot filter) are easily accessible, reducing daily maintenance time.
The wide-opening engine hood facilitates easy engine inspection and servicing.
Excellent Fuel Economy:
Thanks to its efficient engine and CLSS hydraulic system, the PC120 is renowned for its low fuel consumption among machines of its tonnage, resulting in lower operating costs for users.

6. High Value Retention:
Due to the Komatsu brand's proven quality, reliability, and market recognition, the PC120's value retention is relatively high among used units.