Caterpillar Equipment

Construction Equipment Products


Caterpillar is pleased to announce the introduction of the 300.9D sub 3 tonne mini excavator machine. The 300.9D expands the Cat® Mini Excavator offering. Most notably, the new 300.9D sub 1 tonne class provides customers with a lower cost unit for entrance into MHE ownership.

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  • Features
  • Specifications
  • Standard & Optional Equipment
  • Compact Dimensions

    Easy site access

    Compact Dimensions

    With an overall width of only 730 mm (2 ft 5 in) the Cat® 300.9D can easily drive through narrow passages and doors. Both indoor and outdoor jobs are now accessible with the under 1000 kg (2,205 lb) weight making easy trailer transportation between sites possible.

    Extending Undercarriage and Blade

    An extending undercarriage and fold out dozer blade allow the machine to be configured for excellent working stability and optimum performance. Easy retraction, controlled from the operator’s seat, enables the machine to pass through narrow openings.

    Foldable Safety Frame

    A protective ROPS safety frame structure mounted on the front of the machine allows fitting of a guard for extra operator protection during hammer use. The structure folds down in a few seconds for easy machine transportation and storage.

    Performance and Durability

    Powerful performance, Robust construction, Work tool ready

    Hose and Cylinder Protection

    Bucket hoses are well protected within the boom and the cylinder is mounted above the structure to increase the machines durability for working in tough environments. The clean lines of the front linkage also provide excellent visibility to the digging area.

    Auxiliary Hydraulics as Standard

    The 300.9D is fitted with auxiliary lines for hammer operation routed down to the stick. Locating the connecting point close to the work tool reduces connecting hose lengths and potential for damage.

    Powerful Engine and Hydraulics

    The 13.7 kW (18 hp) engine and perfectly matched hydraulics provide efficient, economical and reliable performance for the toughest of jobs. The matched cooling system is designed to accommodate working within confined areas and also the powerful Cat® hammer. Low noise and vibration levels deliver comfortable operation.

    Customer Support

    Low operating costs with excellent services and options

    Work Tools

    A range of tools is available to take advantage of the machines versatility. All tools are matched to the machine to optimize performance and deliver excellent value through high productivity and long life.

    Customer Support

    Product supported through the Cat dealer and worldwide parts network aimed at minimizing downtime.

    • Finance options
    • Warranty options
    • Maintenance contracts
    • Help and advice in product and option selection to maximize efficiency and operating profitability

    User Friendly Operation

    Simple controls - Easily maintained

    Simple Controls (Ease of Use)

    The operator area is spacious and laid out to provide comfort and ease of operation. Smooth, precision operation of functions is possible from independent controls allowing all skill levels to be productive with little practice.


    Service and maintenance time is reduced to a minimum with a simple to open steel engine cover and all maintenance and greasing points easily accessible.

    Extending Dozer Blade

    Blade extensions simply rotate and lock into position allowing the machine to be quickly configured for narrow width or maximum blade coverage. Locking pins and extension plates are retained with the machine to reduce potential for lost or damaged components.

  • Engine Model Yanmar 31NV70
    Net Power 13 hp
    Gross Power 18 hp
    Rated speed 2100 RPM
    Battery 12 V, 20 Amp
    Diesel tank volume 2.64 gal
    Displacement 52 in3
    Flywheel output ISO 13 hp
    Gross Power (ISO 14396) 18 hp
    Make/type Yanmar 31NV70
    Maximum engine output 18 hp
    Type Water cooled model 3-cylinder diesel engine
    Operating Weight 2061 lb
    Transport weight without Safety frame 2060 lb
    Transport weight with Safety frame 2170 lb
    Ground Clearance 5 in
    Boom swing angle (Left) 55 Degrees
    Boom swing angle (Right) 56 Degrees
    Height with ROPS safety frame folded down 4.94 ft
    Height with ROPS safety frame unfolded 7.47 ft
    Length of undercarriage 4 ft
    Maximum Digging Depth 5.68 ft
    Maximum Dump Height 6.68 ft
    Maximum dig height 9.39 ft
    Maximum dozer dig depth 7 in
    Maximum dozer lift height 8 in
    Maximum reach 10.09 ft
    Maximum reach at ground level 9.92 ft
    Maximum vertical dig depth 4.43 ft
    Minimum front linkage swing radius 3.77 ft
    Tail swing radius 2.41 ft
    Track width 7 in
    Transport length (arm lowered) 9 ft
    Undercarriage Width - Extended 2.83 ft
    Undercarriage Width - Retracted 2.33 ft
    Width 2.4 ft
    Displacement 52 in3
    Travel Speed 1.12 mph
    Ground Pressure 3.5 psi
    Gradeability 30°/58%
    Track width 7 in
    Digging Force - Bucket 2000 lb
    Pumps 2 gear pumps
    Operating Pressure - Travel 2466 psi
    Digging Force - Stick 1011 lb
    Operating Pressure - Swing 1015 psi
    Discharge capacity 11.4 + 11.4 L/min (3 + 3 gal/min)
    Hydraulic tank capacity 3.7 gal
    Operating pressure for the work and travel hydraulics 2466 psi
    Operating pressure pivot 1015 psi
    Machine Swing Speed 8 RPM
    Width 27.5 in
    Height 8 in
    Dig Depth 8 in
    Lift Height 7 in
    Hydraulic Tank 3.7 gal
    Fuel Tank 2.64 gal
    Sound power level (LWA) (to 2000/14/EG) 93 dB(A)
    Gradeability 30°/58%
    Ground clearance 5 in
    Ground pressure 3.5 psi
    Machine swing speed 8 RPM
    Number of rollers per side 2
    Track width 7 in
    Travel speed 1.12 mph
    Machine Overhang 12.5 in
    Stick Length - Standard 34.8 in
    Dig depth 7 in
    Height 8 in
    Lift height 8 in
    Width 28 in
    Operating weight with Safety frame 2170 lb
    Operating weight without Safety frame 2061 lb
    Sound power level (LWA) (to 2000/14/EG) 93 dB(A)
    Digging force - Bucket 2000 lb
    Digging force - Stick 1011 lb
    Operating weight with Safety frame 2170 lb
    Operating weight without Safety frame 2061 lb
  • Standard Equipment

    • Adjustable vinyl seat
    • Auxiliary hydraulic circuit, with one-way (hammer) lines to stick
    • Boom mounted work light
    • Dozer blade, with side extensions
    • Ecology drain for hydraulic tank
    • Hydraulic extending undercarriage
    • Retractable seatbelt
    • Rubber belt track, 180 mm (7 in) wide

    Optional Equipment

    • 2 way (auger) auxiliary lines to the stick (not available in all regions)
    • Bio oil
    • Buckets: 250 mm (10 in); 350 mm (15 in); 700 mm (2 ft 4 in)
    • Custom color paint
    • Front guard
    • Hammer
    • Rotating beacon


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