LINK-BELT 4300 QUANTUM CRAWLER EXCAVATOR

Technical Description

The Link-Belt 4300 Quantum is a heavy-duty hydraulic excavator engineered for demanding earthmoving and material handling operations. Powered by a Cummins MII-C265 turbocharged diesel engine producing 240 horsepower at 1,700 rpm with maximum torque of 900 foot-pounds at 1,300 rpm, this machine delivers substantial digging force and operational capability. The excavator weighs 73,570 pounds in operating configuration and features three interchangeable boom and stick combinations, accommodating diverse job requirements with maximum reach distances ranging from 34.1 to 38.4 feet along ground level and digging depths from 22.4 to 26.9 feet. The hydraulic system utilizes dual variable displacement axial piston pumps with one gear pump for pilot controls, delivering 142 gallons per minute at a relief pressure of 4,620 psi, enabling maximum bucket digging force of 39,357 pounds. The machine incorporates Link-Belt's Intelligent Quantum Control system with four selectable working modes—Heavy, Standard, Light, and Fine—plus a Power Up Mode that provides a nine percent hydraulic boost for enhanced performance during critical operations. Featuring a hydrostatic transmission, the 4300 Quantum achieves maximum travel speeds of 3.1 mph with single-pedal operation for simultaneous track engagement. The undercarriage accommodates 31.5-inch-wide shoes with 50 per side, generating ground pressure of 7.0 psi for reduced surface impact. Additional features include a 10.7-foot tail swing radius, swing torque capacity of 73,700 foot-pounds, and comprehensive cab controls with automatic idling systems. The fuel capacity of 153.3 gallons supports extended operational periods, while the 24-volt electrical system with 70-amp alternator ensures reliable performance in demanding field conditions.