Komatsu continues to position the PC490LC-11 as the anchor of its large hydraulic excavator lineup - a 47,930-to-49,995 kg operating-weight machine rated at 268 kW (359 hp) at 1,900 rpm, built for high-production mass excavation, quarry production, and large-scale infrastructure work where bucket capacity, dig force, and structural durability determine fleet profitability. The PC490LC-11 pairs its heavy-duty reinforced undercarriage with large high-strength steel castings on the boom, arm, and bucket link - delivering high lift capacity, lateral stability, and added durability in the demanding work cycles that define large-production excavator applications.
The machine's defining engineering feature is the "closed-center load-sensing hydraulic system" paired with "large displacement high-efficiency pumps." The large-displacement hydraulic implement pumps provide high flow output at lower engine RPM, allowing the machine to operate at the most efficient speed for each specific application while maintaining full hydraulic output - a direct productivity and fuel-economy advantage over fixed-displacement architectures. Combined with closed-center load-sensing control that delivers precise, fine control for accurate grading and material placement, the PC490LC-11 gives operators the responsiveness required for both high-volume mass excavation and precision-grade finishing work on the same machine.
The machine's standard working equipment includes a 23-foot-2-inch one-piece HD boom and 11-foot-1-inch arm paired with an SAE-heaped 2.94 yd³ bucket, providing a working envelope that competes directly with Caterpillar 349 and Volvo EC300E configurations. Combined with a large, spacious, quiet cab featuring a standard air-suspension seat for extended-shift comfort, Komatsu's KOMTRAX telematics platform for remote fleet monitoring and fuel-consumption tracking, and the manufacturer's established global parts and service network, the PC490LC-11 positions itself as the production leader against the Caterpillar 349, Volvo EC300E, and Hitachi ZX490 in the global 50-ton large excavator segment.
