Technical Description
The Komatsu PC138US-8 is a high-performance, ultra-short tail swing crawler excavator engineered for versatility and efficiency in demanding construction environments. Powered by a Komatsu SAA4D95LE-5, 4-cylinder, turbocharged, and air-to-air aftercooled engine, it delivers a gross power output of 96.6 hp (72 kW) at 2,200 rpm and a net power of 91.7 hp (68 kW), ensuring strong torque and low fuel consumption. The engine features advanced emission control, meeting EPA Tier 3 and EU Stage 3A standards. With an operating weight of 30,540 lbs (13,850 kg), the PC138US-8 offers excellent stability and lifting capacity, making it suitable for a wide range of applications. Its compact dimensions include a ground clearance of 1.3 ft, a cab height of 9.3 ft, a track length on ground of 11.9 ft, a tail swing radius of 4.9 ft, and a width to the outside of tracks of 8.2 ft, allowing for exceptional maneuverability in confined spaces. The hydraulic system provides a swing speed of up to 11 rpm, while the undercarriage is equipped with 43 shoes per side, 7 track rollers per side, and 1 carrier roller per side, ensuring robust traction and durability. Maximum travel speed is 3.2 mph (5 km/h), and the drawbar pull reaches 27,560 lbs. The excavator features a hydrostatic drive system, electrically actuated wet multi-disc swing brake, and a large bucket capacity of up to 0.8 m³. Additional specifications include a cooling system fluid capacity of 3.3 gal, engine oil capacity of 2.9 gal, fuel capacity of 51.5 gal, hydraulic system fluid capacity of 18.2 gal, and swing drive fluid capacity of 0.7 gal.
