The Cat 303E CR mini hydraulic excavator has a compact-radius design that limits tail swing to less than 127 millimetres.
An easily transported machine, the 303E CR has a maximum operating weight of 3.5 tonnes and expands the Cat mini excavator line to give buyers more choice in the 2.5-3.5t size class.
The machine is run by a 23.5 horsepower Cat C1.3 engine and features a load-sensing hydraulic system that delivers flows to 87.6 L/min for a reliable performance in demanding applications.
The 303E CR’s hydraulic system uses pilot-operated joysticks rather than mechanical-linkage controls.
For operator convenience, auxiliary hydraulic controls are integrated into the joysticks, making the 303E CR work-tool ready with both a one-way-flow circuit for tools such as hydraulic hammers and a two-way-flow circuit when using work tools with cylinders or bi-directional motors.
An in-cab pattern changer allows controls to be easily switched to suit operator preference.
To improve onsite performance, Cat designed the bucket to rotate at up to 200 degrees for better material retention when loading trucks and to allow for deeper flat-back trenches without repositioning the machine.
The bucket is also versatile and can be used in a front-shovel configuration, an advantage for such tasks as installing utility pipes, cleaning material from inside truck bodies, or filling a hopper next to a wall.
When digging in confined spaces, Cat believes the 303E CR’s offset boom provides added flexibility.
For added convenience, a float function for the dozer blade allows the blade to follow ground contour and create smoother finish grades, potentially eliminating an additional grading tractor on the project.
Available in both cab and canopy configurations, the 303E CR’s operator station features a rollover protection structure and a falling object protective structure, as well as the Cat interlock system, which prevents hydraulic movement when the safety bar is raised.
Further adding to operational safety is a standard travel alarm, automatic swing brake and a retractable seatbelt.
“A large, adjustable suspension seat keeps operators comfortable and a monitor that displays gauges and general diagnostics keeps them informed,” Cat said.
“An automatic two-speed travel system enhances overall machine efficiency and ease of operation, and an automatic engine-idle system conserves fuel and reduces sound levels.”
Steel tracks are available as an alternative to the standard rubber tracks for use in applications that require higher resistance to sharp debris.
