Technical Description
The Caterpillar 320E RR Excavator is a robust, medium-class hydraulic machine designed for heavy-duty applications requiring excellent reach and digging capacity. It is powered by a Cat® C6.6 ACERT™ engine delivering a net power of 152 hp (113 kW), combining fuel efficiency with compliance to Tier 4 emission standards. The excavator features an operating weight of 56,440 lbs (25,600 kg), ensuring stability and durability in demanding tasks. Equipped with a heavy-duty 5.7 m (18'8") reach boom and a 2.9 m (9'6") heavy-duty stick constructed from high-tensile steel with internal baffle plates, the 320E RR offers maximum digging depth of 22.1 ft and a maximum reach along the ground of 32.3 ft, suitable for wide-ranging excavation jobs. Its hydraulic system delivers a maximum flow of approximately 428 L/min, with a pilot system flow of 24.3 L/min and operating pressure up to 35,000 kPa (5,076 psi), supporting enhanced lift and digging forces—bucket digging force reaches up to 150.4 kN (33,800 lbf), and stick digging force up to 106.7 kN (24,000 lbf). Travel speed is rated at 3.5 mph with a maximum drawbar pull of 46,086 lbf. The 320E RR incorporates advanced features such as improved lift capacity through additional counterweights, a captured flag boom nose pin for durability, self-lubricated front linkage bearings, and an efficient two-pump high-pressure hydraulic system for superior tool versatility. The machine’s cab meets ISO safety standards with ROPS/FOPS protection, offering operator comfort and productivity. Its heavy-duty components and comprehensive range of Cat work tools make it suitable for excavation, loading, trenching, demolition, and other construction applications requiring strength, reach, and precision.
