Cat 300.9D Mini Hydraulic Excavator

Compact excavators

About the Cat 300.9D Mini Hydraulic Excavator


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.


Operational Data
Digging Force - Bucket 8.9 kN
Digging Force - Stick 4.5 kN
Operating Weight - With Safety Frame 985 kg
Operating Weight - Without Safety Frame 935 kg
Net Power 9.6 kW
Rated Speed 2100 r/min
Diesel Tank Volume 10 l
Displacement 854 cm³
Flywheel Output ISO 9.6 kW
Gross Power - ISO 14396 13.7 kW
Maximum Engine Output 13.7 kW
Operating Weight - With Safety Frame 985 kg
Operating Weight - Without Safety Frame 935 kg
Operating Weight 935 kg
Boom Swing Angle - Left 55 °
Boom Swing Angle - Right 56 °
Height - With ROPS Safety Frame Folded Down 1507 mm
Height - With ROPS Safety Frame Unfolded 2276 mm
Length - Undercarriage 1220 mm
Maximum Dig Height 2863 mm
Maximum Digging Depth 1731 mm
Maximum Dozer Dig Depth 174 mm
Maximum Dozer Lift Height 197 mm
Maximum Dump Height 2035 mm
Maximum Reach 3074 mm
Maximum Reach - Ground Level 3023 mm
Maximum Vertical Dig Depth 1349 mm
Minimum Front Linkage Swing Radius 1150 mm
Tail Swing Radius 736 mm
Track Width 180 mm
Transport Length - Arm Lowered 2746 mm
Undercarriage Width - Extended 864 mm
Undercarriage Width - Retracted 711 mm
Width 730 mm
Hydraulic System
Hydraulic Tank Capacity 14 l
Operating Pressure Pivot 70 bar
Operating Pressure for the Work and Travel Hydraulics 170 bar
Chassis and Swivel Gear
Ground Clearance 127 mm
Ground Pressure 0.25 kg/cm²
Machine Swing Speed 8 r/min
Track Width 180 mm
Travel Speed 1.8 km/h
Operating Specifications
Machine Overhang 318 mm
Stick Length - Standard 890 mm
Dozer Blade
Dig Depth 174 mm
Height 200 mm
Lift Height 197 mm
Width 700 mm
Noise Emissions
Sound Power Level (LWA) (to 2000/14/EG) 93 dB(A)



Compact Dimensions

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 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.
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.

User Friendly Operation

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.
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.
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.

Customer Support

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
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.

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