The Cat M320 wheeled excavator optimizes performance and efficiency at the jobsite with up to 9% more swing torque than the Cat M320F. Its longer wheelbase increases operating stability and improves machine ride when roading to the next jobsite at speeds reaching 35 km/h (21.7 mph). From dirt to asphalt, this wheeled excavator can be operated in a range of applications from utility work to trenching to waste handling.

The M320 is powered by the 129.4-kW (174-hp) Cat C4.4 engine that meets U.S. EPA Tier 4 Final emissions standards. Efficiency increasing standard features like one-touch low idle with automatic engine speed control, auto engine idle shutdown, and on-demand electric cooling fans combine to conserve both diesel and diesel exhaust fluid (DEF) to lower operating costs. Capable of running up to B-20 biodiesel, the machine offers a standard high-ambient temperature capability of 50˚C (125˚F) and cold-start capability of -18˚C (0˚F) for completing projects in a range of operating environments. The M320 also features a dedicated swing pump to provide consistent power.

Its design saves owners up to 5% in maintenance parts with its new, longer-lasting filters, according to the company. Offering a 50% longer service life than previous filter designs, the new hydraulic oil filter with anti-drain valves to safeguard from contaminating the oil during replacement delivers improved filtration performance and a 3,000-hour replacement interval. Two fuel filtration levels better protect the engine from dirt particles in the diesel.

All daily maintenance points can be quickly and safely checked from ground level. Reducing service time, the M320 features centralized grease points with an available automatic lubrication system option for the implement and swing system. All S∙O∙SSM ports are also positioned at ground level, providing easy extraction of fluid samples for analysis. The operator can track machine maintenance intervals and filter life from inside the cab on a touchscreen monitor.