Caterpillar Expands Mini Hydraulic Excavator Line with 306 CR
The 306 CR mini excavator delivers strong performance, enhanced operator experience, and simplified maintenance with extended service intervals.

The 306 CR features a Cat C2.4 Turbo engine that delivers 55.9 net hp.
Photo courtesy of Caterpillar
The new Cat 306 CR Mini Hydraulic Excavator marks Caterpillar’s entry in the 6-ton class offering. The new mini excavator features heavy-duty main structures, a fuel-efficient engine, load-sensing hydraulics, spacious cab, and exclusive Cat Stick Steer system. Standard exclusive features include stick steer and a new LCD monitor.
With its long stick option, the 306 CR delivers a maximum dig depth of 162 inches and 15,821-lb. maximum operating weight when equipped with the sealed and pressurized cab. A canopy alternative to the pressurized cab will be available for customers in 2020. Built with a swing boom, this mini excavator’s compact radius design provides a low, 58-inch tail swing with counterweight for working close to obstructions.
The excavator delivers class-leading lift performance of up to 7,839 lbs. at a 9.8-foot radius. Enhanced uphill swing torque and increased cycle times provide greater productivity and efficiency.
The machine’s fuel-saving, load-sensing hydraulic system with an electronically controlled variable-displacement piston pump generates 40 gal/min hydraulic oil flow. It offers the hydraulic capacity for increased travel performance and higher digging forces than competitive units.
High flow rate of 24 gal/min to the auxiliary circuit enables operation of demanding hydromechanical attachments. Complete with quick-disconnect lines, the standard auxiliary hydraulic system provides one-way, two-way, and continuous flow.
The Cat C2.4 turbo diesel engine rated at 55.9 net hp powers the mini excavator and meets U.S. EPA Tier 4 Final emission standards. Automatic engine idle and shutdown features help to save on fuel consumption.
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