Cat adds M318F and M320F wheeled excavators

Cat has introduced two new wheeled excavators, the 19.7 tonne M318F and 21 tonne M329F powered by Tier 4 Final/Stage IV diesels, whose design has been heavily influenced by customer feedback. Cat said that this led it to focus on initial quality and reliability, low operating costs, operator comfort and safety, simplicity of operation and maintenance, durability and environmental friendliness.

The machines nevertheless retain the best features of previous models, including the Cat Smartboom, ride control, load-sensing hydraulics, dedicated swing pump, hydraulically driven cooling fan, large working envelope and configuration/work-tool versatility.

Completely restyled on the outside and including a ROPS cab with increased pressurization and glass area for better visibility, the machines are powered by a 126 kW (169 hp) Cat C7.1 ACERT that, according to the company, features refinements that result in increased torque and faster response to changes of load. This engine incorporates an emissions after-treatment system that requires no attention other than periodic replenishment of the diesel-exhaust-fluid (DEF). Emissions control includes Cat’s NOx-reduction system, selective catalytic reduction, diesel oxidation catalyst, diesel particulate filter (DPF) and a high pressure/common rail fuel system.