Caterpillar continues to position the 308 CR as the anchor of its 8-ton mini excavator range - a roughly 18,493-pound operating-weight machine with a fixed boom and reduced tail swing architecture, powered by the Cat C2.8 turbo diesel engine delivering 69 net horsepower (51.4 kW) and meeting both EU Stage V and U.S. EPA Tier 4 Final emissions standards. The 308 CR's gross horsepower represents a 25 percent increase over the 307.5 model it replaces, aimed specifically at improving performance with hydromechanical attachments such as breakers, augers, and grapples. The machine delivers a digging depth of 185 inches (4,700 mm) and a maximum reach of 272 inches (6,900 mm), with pin sizing that remains the same as the 307.5 - allowing contractors and fleet owners with existing attachments to upgrade without a tooling change.
The machine's defining engineering feature is the "load-sensing hydraulics with variable-displacement piston pump" - Caterpillar's smart hydraulic architecture that matches pump output to operator demand rather than running at a fixed displacement, delivering full dig force when required while reducing flow during precision work. Combined with "automatic idle" and "auto shutdown" features that reduce fuel consumption during extended idle periods, the 308 CR delivers efficiency across the stop-start work cycles that dominate mini excavator duty in utility and landscaping applications.
The 308 CR's safety and precision architecture includes the "E-fence" function that limits boom, stick, bucket, house, and boom swing from operating beyond operator-defined set points - a critical safeguard when working under structures, alongside traffic, or within confined urban job sites. Combined with "Swing Assist," which aids the operator in aligning the machine with trucks or trench lines during loading and trenching cycles, the 308 CR delivers production-grade accuracy in a machine class where competing manufacturers typically reserve these features for larger excavators. The machine is available with a conventional boom or a variable-angle boom configuration suited to work adjacent to walls, in ditches, or against obstacles where a conventional boom cannot reach. An optional angle blade extends the machine's grading and backfilling capability, while a new camera system enhances rearward visibility during slewing operations in congested job sites. Combined with Caterpillar's established global dealer and parts network, the 308 CR positions itself as a direct competitor to the Kubota KX080, Bobcat E88, Takeuchi TB280FR, and Volvo ECR88 in the global 8-ton mini excavator segment.
