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Digger Man Blog

by Nick Drew  |  Wed 27 Nov 2019

Forest spec Cat Down in the Woods

American construction machinery giant Caterpillar revealed its all new Next Generation mini excavator range earlier this year at Bauma.

Forest spec Cat Down in the Woods

Of particular interest to those engaged in forestry work will be the all-new 309 CR High Flow model. The 309 CR High Flow features a load-sensing hydraulic system with an electronically controlled variable-displacement piston pump which in this application is capable of delivering a generous dedicated oil flow of 140 litres/min to the auxiliary circuit making it very capable for running oil hungry and demanding attachments like flail mowers, and mulchers.

The 309 CR has a maximum operating weight of 9,403 kgs and is powered by Cat’s in-house C3.3 diesel engine which offers a power output rating of 52.4 kw (70.3 hp) and meets the current EU Stage V emissions regulations.

Like all the new Cat mini excavators the 309 CR comes fitted with some industry first technology, most notably the new “Stick Steer” function which with the flick of a button enables the operator to travel the machine using just the left-hand joystick, similar in function to a skid steer loader.

Add to that the new “Cruise” function which is selected using a button located on the front of the left-hand joystick, this enables the operator to travel long distances across site without the need to use hands or feet controls.

The machines feature an all new spacious cab design which is sealed and pressurized and includes a totally redesigned heating and air conditioning system. A new Next Gen LCD monitor offers easy to read features and the popular jog-dial control as seen on the larger Next Gen excavators provides easy navigation around the various on-screen menus.

The cab features plenty of large glazed areas offering excellent all-around visibility and for forestry applications cab guards can be fitted as an optional extra. A rear-view camera setting is available on the monitor for improved visibility to the rear of the machine.

For the challenging forestry sector steel track pads can be specified and there is also an option for a long undercarriage version of the 309 CR for added stability and lower ground pressure to suit individual customers requirements.  

The 309 CR’s compact dimensions and off-set boom function make it an extremely flexible tool in the tight confines of some woodlands, this flexibility can be further enhanced by opting for the (TAB) Two Piece boom option, while the standard dozer blade further adds to the capability of this midi excavator.

Checkout this video from Cat which demonstrates the best practice when using the 309 CR when mulching.

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