KOMATSU PC138USLC-10 CRAWLER EXCAVATOR

Technical Description

The Komatsu PC138USLC-10 is a compact mid-size hydraulic excavator engineered for confined work environments such as urban construction sites, roadways, and bridge projects. Powered by a Komatsu SAA4D95LE-6 common rail diesel engine, the machine delivers 97.3 HP at 2,050 rpm with EU Stage IIIB/EPA Tier 4 interim emissions certification, ensuring environmental compliance without sacrificing performance. The excavator's defining feature is its ultra-short tail swing radius design, which provides a minimum swing radius of 2.5 meters, enabling superior maneuverability and stability in tight spaces where conventional machines cannot operate effectively. With an operating weight of approximately 32,628 lbs and maximum bucket capacity of 0.72 cubic meters, the PC138USLC-10 offers impressive dig force of 9,320 kgf and arm crowd force of 6,180 kgf, delivering efficient material handling across diverse applications. The machine incorporates variable speed matching technology between engine and hydraulic pump, combined with automatic low idle functionality, significantly reducing fuel consumption while maintaining precision during operations. The excavator features six working modes—Power, Economy, Breaker, Attachment Power, Attachment Economy, and Lifting modes—enabling operators to optimize performance for specific job requirements. Hydraulic specifications include a maximum pump flow of 242 liters per minute with relief valve settings of 355 bar for implement and travel systems. The sealed track assembly and gradeability of 70% (35 degrees) ensure reliable performance across challenging terrain, while max travel speeds of 2.9/5.1 km/h provide adequate mobility for job site transitions.