Caterpillar’s new wheeled excavator increases stability and speed
The M320 features an in-cab swing lock to prevent unintentional movements during travel

Stronger machines with increased job site performance are needed by today's contractors to ensure lower operating costs and increased productivity. Cat's new M320 wheeled excavator is designed to enhance ease of use and stability for construction, utility, and road maintenance applications, while lowering total cost of ownership.
An operator-centric design focuses on all-day comfort and control
The M320 cab features easy-to-reach controls that help support operator comfort and capability. A high-resolution touchscreen monitor provides an intuitive interface to increase consistent performance throughout the workday.
Also incorporated is a new auto axle lock feature that automatically activates when the travel pedal is in neutral and the machine speed is near zero. A two-way travel pedal supports machine movement. Compared with the previous model, the M320's long wheelbase helps improve stability.
The machine achieves up to 17 percent lower maintenance costs compared to the previous design, helping reduce downtime and improve overall machine uptime.
Additional features include:
- Hydraulic filter features an increased 2,000-hour replacement interval and anti-drain valves
- Parts commonality with the 320 excavator
- Long greasing intervals
- Small cab pillars and large windows
- Optional right-side-view cameras
- In-cab swing lock helps prevent unintentional swing movement and allows the front linkage to be securely locked during machine travel
Powered by the Cat C4.4 engine, the M320 meets China Nonroad Stage IV and Brazil MAR-1 emission standards and emits equivalent to U.S. EPA Tier 3 and EU Stage IIIA. Automatic Engine Speed Control helps reduce fuel consumption by allowing the engine to enter idle mode when the machine is not working. Extended maintenance intervals further support reduced downtime over the life of the machine.
The M320 can travel at speeds up to 35 km/h (22 mph). Its advanced hydraulics system balances power and productivity while providing precise digging control. Auxiliary hydraulic options support a wide range of Cat attachments, with attachment commonality shared with the Cat 320 excavator.


