Technical Description
The Kobelco SK85CS-3E is a versatile hydraulic excavator featuring a 55 hp (41 kW) Isuzu AU-4LE2X, 4-cylinder engine delivering a max torque of 154.9 lbs-ft at 1800 rpm and a displacement of 133 cu in, optimized for efficient performance and fuel economy. Its operating weight is approximately 41,227 lbs, combining robust power with maneuverability. The excavator offers two boom/stick configurations: Option 1 provides an arm crowd force of 8,100–8,300 lbs and a bucket digging force of 14,658–16,456 lbs (SAE/ISO), with maximum digging depths of 13.9 ft and a vertical wall digging depth of 11.6 ft; Option 2 extends max digging depth to 14.8 ft and vertical wall depth to 12.8 ft. It achieves a maximum digging reach of up to 23.9 ft with a maximum digging height of 23 ft and maximum dumping clearance of 16.2 ft. The swing mechanism offers 11.5 rpm swing speed and a torque of 12,500 lb-ft, while the minimum swing radius is 137.8 inches, enhancing operation in confined spaces. The undercarriage includes a 9.3 ft crawler length, 6.1 ft track gauge, 23.6-inch shoe width, 13.8-inch ground clearance, and drawbar pull of 17,300 lbs, supporting stable and efficient mobility on varied terrains. The hydraulic system features two variable displacement pumps with a max discharge flow of 12.2 gpm and pressure up to 4,260 psi on the travel circuit. Fuel capacity is 31.8 gallons, with additional capacities for engine oil (3 gal), hydraulic oil (22.5 gal), and cooling system (2.3 gal). Braking utilizes an oil disc per motor with a gradeability of 70%. The cab provides a comfortable environment with sound suppression and air conditioning, accommodating extended operation periods with minimal operator fatigue. This excavator excels in versatile digging, lifting, and material handling applications due to its effective power-to-weight ratio and optimized digging forces.
