Caterpillar has launched the Cat 320D2 GC excavator, a Tier III version of its latest excavator line equipped with an electronically controlled Cat C4.4 ACERT engine that lowers fuel use by as much as 17% compared to the Cat C7.1 engine in the previous model.
Rated at 85kW, the C4.4 ACERT engine’s electronic fuel-injection system ensures optimum fuel efficiency and performance, and a new high-efficiency fuel-filtration system protects injectors from contaminants that can cause damage and deposits.
An Automatic Engine Control system also reduces engine speed when full power is not required, thus saving fuel, while operating costs are further reduced by the need for 30% less oil during routine oil changes than before.
With a maximum operating weight of 20,800kg, the excavator is also designed to ensure maximum life cycle value for the customer, bringing together long-term durability, field-proven reliability, productivity, and low operating costs.
The 320D2 GC maintains the capabilities needed to take on several tasks with a powerful hydraulic system, heavy-duty main structures and an operator’s station designed for optimum convenience.
Hydraulic refinement for the 320D2 GC includes powerful, efficient, variable-displacement pumps designed and built by Caterpillar and delivering flows to 428 L/min at relief pressures to 3,500 kPa.
Oil-regeneration systems for the boom and digging-arm circuits transfer oil exhausting from cylinders to the opposite side of the cylinders, reducing flow required from the main pumps and resulting in faster response, precise control and reduced fuel consumption.
The 320D2 GC’s boom and digging arm are box-section structures with internal baffles to absorb twisting forces, and robotically welded to weld depths with three times the penetration of manual welds to ensure robust durability.
The X-shaped, box-section car body is designed to resist torsional bending and dissipate stress throughout the foundation of the machine, while the massive track-roller frames are press formed for superior strength.
The track rollers are sealed to resist dirt intrusion, and the grease-lubricated track chains extend undercarriage life while significantly reduce sound levels when traveling.
In terms of operator comfort and safety, a powerful heating/ventilating system with 10 outlets ensures year-round comfort, while the LCD display is programmable in 42 languages.