Technical Description
The Caterpillar 311C Utility Hydraulic Excavator is a versatile, compact machine designed for a wide range of excavation tasks. Powered by a turbocharged Cat 3064T diesel engine with a displacement of 259 cubic inches, it delivers 82 horsepower (61 kW) gross and 79 horsepower (59 kW) net, ensuring reliable performance in demanding conditions. The excavator features a robust undercarriage with a 20-inch triple grouser shoe, a track gauge of 6.5 feet, and a ground pressure of 6 psi, providing excellent stability and traction. With a maximum operating weight of 26,410 lbs, it offers strong lifting and digging capabilities. The hydraulic system provides a pump flow capacity of 28 gpm and a relief valve pressure of 4,340 psi, supporting efficient operation of attachments. The machine is equipped with a 45-amp alternator and a 24-volt electrical system. Standard features include a spacious cab with improved visibility, comfortable operator amenities, and easy access for maintenance. The 311C offers two boom/stick configurations: Option 1 provides a maximum cutting height of 25.6 ft, digging depth of 16.5 ft, loading height of 18 ft, reach along ground of 24.9 ft, and vertical wall digging depth of 14.5 ft; Option 2 increases these to 26.7 ft, 18.4 ft, 19 ft, 26.6 ft, and 16.2 ft, respectively. Shipping dimensions are 9.1 ft in height and 22.7 ft in length. Bucket capacities range from 0.4 to 1 cu yd, with a reference capacity of 0.6 cu yd. The excavator’s ground clearance is 1.5 ft, cab height is 9.1 ft, track length on ground is 8.6 ft, tail swing radius is 5.8 ft, and width to outside of tracks is 8.2 ft. Maximum travel speed is 3.5 mph (5 kph), and drawbar pull reaches 20,680 lbs.
