KOMATSU PC138US-10 CRAWLER EXCAVATOR

Technical Description

The Komatsu PC138US-10 is a compact hydraulic excavator engineered for operations in confined spaces such as urban construction sites, roadways, and bridges. Powered by a SAA4D95LE-6 diesel engine with a displacement of 199 cubic inches, the machine delivers 97.3 gross horsepower and 93.5 net horsepower at 2,050 rpm, providing reliable performance for demanding applications. The excavator features an ultra-short tail swing radius of 4.9 feet, enabling exceptional maneuverability in tight working areas while maintaining exceptional stability through its integrated ROPS cab design. Equipped with hydrostatic drive technology, the PC138US-10 achieves a maximum drawbar pull of 27,557.8 pounds and operates at a maximum travel speed of 3.2 mph, supported by a sophisticated undercarriage comprising 7 carrier rollers and 43 shoes per side. The swing mechanism operates at 11 rpm with a swing torque of 33 kNm, controlled through an axial piston motor with integrated swing holding brake. The machine's operating weight of approximately 32,782.8 pounds includes standard equipment, a 2.5-meter arm, and a 470-kilogram bucket with maximum digging capacity of 0.72 cubic meters. The hydraulic system utilizes Komatsu's Closed Center Load Sensing (CLSS) technology with pilot proportional control (PPC), optimizing fuel efficiency and reducing operational costs. Service refill capacities include a 52.9-gallon fuel tank, 3.1 gallons of engine oil, and 18.3 gallons of hydraulic fluid, ensuring extended operation between service intervals.