Construction giant Caterpillar has unwrapped three new D Series mini excavators to complement their existing line-up
Caterpillar claims the new models – the 301.7D,
302.2D and 302.4D -are powerful, versatile machines that work
comfortably in confined spaces.
With model configurations that closely
reflect their operating weights (1.6 to 2.5 metric tons), the
company claims the new machines feature powerful hydraulics, a
spacious operator environment and excellent service access.
Compact in size, the 301.7D, 302.2D
and 302.4D can be easily transported on a trailer, or in a pick-up
The 301.7D can be specified with either a fixed or extending
undercarriage. The 302.2D is fitted with an extending undercarriage
as standard and delivers a greater dig depth and lifting
performance. A longer dozer blade is optional on both the 301.7D
In North America, the 302.4D is configured with brackets and
relief valves for simple and cost-effective mounting of a hydraulic
Here is what the maker says about it:
Durable, functional design
Enhancing overall capability, the dozer blade simplifies
backfilling and clean-up chores.
A float function allows the blade to follow ground contours with
no operator correction and make site clean-up quick and easy.
Sturdy hoisting brackets on the cab roof enable the easy and
rapid relocation of the machine.
D-Series models come with a canopy operator’s station that
enables access from both sides of the machine, or with an optional
enclosed cab providing premium standard features such as an
efficient heater/defroster/ventilation system, as well as a
retractable front window with a strut assisted linkage that can be
easily stowed in the roof space.
The lower section of the front glass can be raised and stored
along with the upper screen section, thus increasing ventilation
and visibility options as well as providing a quick storage
All models have a sliding right-side window for additional
ventilation while cab versions come with a radio-ready package.
The operator’s compartment offers a comfortable suspension seat,
retractable seat belts, adjustable wrist rests and ample
The hydraulic function is operated by the proportional roller on
the joystick. A switch allows the operator to vary the auxiliary
hydraulic flow to suit the requirements of the different work
All models offer two-way auxiliary hydraulics enabling the
operation of both hydraulic hammer and a bi-directional tool such
as an auger.
In line with the larger models in the new Cat excavator range,
all controls are pilot operated, providing smooth operation with
low effort and eliminating any maintenance required to cables and
The swing park brake, required during machine transportation, is
automatically applied when the left hand console is raised.
Easy routine service
Durable steel body panels offer good resistance to damage.
Hinged and removable panels provide easy access for both routine
and deeper maintenance.
Extended routine service intervals for D Series models save time
and reduce operating costs: oil-impregnated sintered-alloy bearings
in the boom and digging-arm linkages require grease only at
500-hour intervals; engine oil changes are extended to 500 hours;
and the hydraulic oil change interval is 3,000 hours.
A Cat SOS fluid-sampling port for hydraulic oil allows accurate,
periodic assessment of fluid condition during its life.