CATERPILLAR 321C LCR CRAWLER EXCAVATORS

Technical Description

The Caterpillar 321C LCR is a compact hydraulic excavator engineered for precision work in confined spaces and demanding construction environments. Powered by a six-cylinder turbocharged Caterpillar 3066T ATAAC diesel engine, this machine delivers 138.2 net horsepower at 1,800 RPM with a displacement of 390.6 cubic inches, providing reliable performance and low emissions to meet Tier 2 worldwide standards. The excavator features a maximum reach along the ground of 31.8 feet and maximum digging depth of 21.8 feet, with exceptional vertical wall digging capability reaching 19.5 feet, making it ideal for precise excavation tasks. Its compact design includes a tail swing radius of only 5.5 feet and outside track width of 10.5 feet, enabling operation adjacent to buildings and in restricted areas typical of highway construction and logging operations. The hydraulic system offers a maximum flow capacity of 54.2 gallons per minute with a total system fluid capacity of 68.7 gallons, delivering precise implement control and consistent breakout force of 141 kilonewtons. Operating at a maximum travel speed of 3.5 miles per hour with a drawbar pull of 44,062.6 pounds, the 321C LCR achieves efficient mobility across job sites. With an operating weight of 50,155.2 pounds and standard 800mm triple-grouser tracks, the machine maintains excellent ground contact and traction. The two-stage one-touch control system maximizes fuel efficiency while reducing operator fatigue, and hydraulic cylinder snubbers minimize shock and noise during operation, extending component life.