Caterpillar Launches New Mini Hydraulic Excavator

Published: 23/11, 2020

The new Cat 306 CR mini hydraulic excavator marks Caterpillar’s entry in the 6t class offering. With its long stick option, the 306 CR delivers a maximum dig depth of 162 in (4.1m) and 15,821-lb (7,175kg) maximum operating weight when equipped with the sealed and pressurized cab. Built with a swing boom, this Next Generation mini excavator’s compact radius design provides a low 58 in (1.475m) tail swing with counterweight for working close to obstructions.

The 306 CR delivers a lift performance of up to 7,839 lb (3,555kg) at a 9.8 ft (3m) radius. Enhanced uphill swing torque and increased cycle times provide greater productivity and efficiency, according to Caterpillar. The machine’s fuel-saving, load-sensing hydraulic system with an electronically controlled variable-displacement piston pump generates 40 gal/min (151l/min) hydraulic oil flow. High flow rate of 24gal/min (90l/min) to the auxiliary circuit enables operation of even the most 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 (41.7kW) powers the new 306 CR mini excavator and meets U.S. EPA Tier 4 Final/Stage V emission standards. It features a power-dense design and delivers consistent performance through a wide speed range. Automatic engine idle and shutdown features help to save on fuel consumption.

The sealed and pressurized cabin lowers in-cab operating noise levels to 72 dB(A) and is heated and air-conditioned to elevate operator comfort regardless of outside temperatures. The cab’s roll over protective structure, tip over protective structure and top guard combine to promote a safe working environment for the operator. Offering the ability to set personal operating preferences, the Next Generation LCD monitor provides easy-to-read machine information, jog-dial for simple navigation and standard Bluetooth capability. The monitor gives the operator critical operating details such as fuel, coolant temperature, hour meter, performance and machine adjustments, and maintenance and machine monitoring.

Operators can switch from conventional lever/foot-pedal steering controls to the standard Cat exclusive Stick Steer system. Stick Steer provides operator control with less effort to advance operating simplicity and comfort. The pattern changer allows operators to select their preferred joystick movement for controlling the 306 CR. Straight blade, angled blade and extra tool carrier configurations expand the flexibility of the 306 CR. Featuring ample travel, above and below grade operation, float function, and “dig-to-blade” operation, the machine’s blade efficiently handles loose material in backfilling and grading applications.

The new 6t class 306 CR shares common components with models in the Cat mini excavator line to lower repair cost, decrease service time and reduce repair parts inventory. Major machine structures – upper and lower frames, track frames, boom and sick – are modeled after its larger Cat excavator counterparts for long-term durability. Recessed to protect from damage in the field, robust flat side panels offer long service life and quick, easy replacement to lower owning and operating costs. Ground-level access to maintenance checkpoints offers access, while enhancing worker safety. Grease intervals help to shorten the daily service routine. The 306 CR also features an extended filter service life.

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