CATERPILLAR 312B CRAWLER EXCAVATOR

The Caterpillar 312B is a compact hydraulic excavator designed for versatile earthmoving and material handling applications. Powered by a turbocharged Cat 3064T diesel engine producing 84 horsepower at 1,900 rpm, this machine delivers reliable performance with a displacement of 259 cubic inches. The excavator features three boom and stick configurations, providing operators with flexible reach capabilities: Option 1 achieves a maximum digging depth of 16.9 feet and reach of 25.6 feet along the ground, Option 2 extends to 18.3 feet digging depth and 26.9 feet reach, while Option 3 maximizes capabilities at 19.9 feet digging depth and 28.3 feet reach along the ground. The bucket system accommodates capacities ranging from 0.5 to 1.1 cubic yards, with a standard 0.6 cubic yard bucket for general-duty work. The hydraulic system employs two variable displacement axial-piston pumps operating at maximum pressures of 4,340 psi for implements, 4,980 psi for travel, and 3,340 psi for swing functions. Key dimensions include an operating length of 25 feet, width of 8.2 feet to outside tracks, and height of 9.1 feet. The machine weighs 28,680 pounds with ground pressure of 5.7 psi, enabling operation on soft terrain without excessive ground disturbance. Travel speed reaches 3.4 mph with maximum drawbar pull of 22,930 pounds. The fully hydrostatic drive system provides responsive control, while a tail swing radius of 7 feet facilitates safe operation in confined spaces. Fuel capacity of 66.1 gallons supports extended working periods, and the 24-volt electrical system powers essential auxiliary functions.