Hyundai R140LC-9 – Crawler excavator with Cummins QSB 4.5 engine

The Hyundai R140LC-9 is a mid-range crawler excavator designed for intensive earthworks, infrastructure, and construction projects. This model belongs to the highly regarded 9 series by Hyundai Construction Equipment, which has gained recognition due to its high reliability, operational economy, and advanced hydraulic systems. A key component of the machine is the Cummins QSB 4.5 engine, serving as the main drive and generating approximately 87 kW of power. This unit provides the necessary torque reserve required to perform demanding tasks in challenging terrain conditions.

The operating weight of the machine is approximately 14 tons, allowing for a good compromise between mobility and working efficiency. The excavator offers a large digging depth and working reach, making it suitable for both small and medium-sized construction sites.

Characteristics of the R140LC-9 model

The Hyundai R140LC-9 is equipped with a robust crawler undercarriage that ensures high stability when working on uneven, muddy, and demanding ground. The frame structure has been optimized for resistance to dynamic loads occurring during digging and material loading. Compact dimensions and a precise control system enable efficient operation even in confined workspaces.

Thanks to the crawler undercarriage and the possibility of mounting additional attachments, this crawler excavator is used in:

• foundation and construction excavations,
• roadworks and infrastructure projects,
• loading of bulk materials,
• demolition work using hydraulic attachments,
• landscaping and land reclamation work.

Cummins QSB 4.5 Engine – approximately 87 kW of power

The Cummins QSB 4.5 power unit was developed for industrial applications and heavy-duty machinery working under high loads. This four-cylinder, 4.5-liter diesel engine features high refinement, great durability, and favorable fuel consumption. Thanks to high torque available already at low RPMs, the engine works effectively with the excavator's hydraulic systems, ensuring smooth operating movements and stable performance parameters.

A power output of approximately 87 kW at 2,000 RPM and a torque of around 500 Nm enable efficient operation of systems responsible for:

• working movement of the arm and boom,
• rotation of the superstructure,
• powering the main hydraulic pump,
• traveling and moving the machine around the construction site.

Key parameters of the QSB 4.5 engine

Performance and working capabilities

The Hyundai 9 series was designed with an emphasis on work efficiency and operator comfort. The R140LC-9 model uses an advanced hydraulic system that ensures fast response of the working attachments while maintaining high control precision. Electronic engine and hydraulic management systems allow for fuel consumption optimization without losing productivity.

When operating under heavy load, the machine maintains stable hydraulic parameters, which translates into high digging force and smooth loading operations. The reinforced construction of the boom and arm allows for long-term operation even in demanding construction and industrial conditions.

Technical data Hyundai R140LC-9

Application of the crawler excavator

Thanks to its operating weight and compact dimensions, the Hyundai R140LC-9 can be transported relatively easily between construction sites using standard low-loader trailers. Its versatile design allows the machine to be used in general construction, civil engineering, the road sector, and municipal management works.

Most often, the machine is used during:

• excavating for foundations,
• construction of water and sewage networks,
• roadworks and earthworks,
• loading aggregates and bulk materials,
• leveling and preparing terrain for investments.

Summary

The Hyundai R140LC-9 is a versatile crawler excavator that combines high working performance with economical operation. The use of the proven Cummins QSB 4.5 engine ensures adequate power, reliability, and stable cooperation with the hydraulic system. As a result, this configuration remains a valued solution for companies undertaking demanding construction, infrastructure, and earthmoving projects.