Caterpillar downsized the engine in its 3.5-tonne 303.5E2 mini excavator to 23.5 hp to cut the machine’s emissions-compliance cost, and upgraded to an electronically controlled hydraulic pump to ...

Standard Grade Assist automates boom, stick and bucket movements, so Cat's 320 excavator also comes with standard Cat Grade 2D, Cat Grade with Assist and Cat Payload technologies, but lower ...