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300.9D (1.0T)

300.9D (1.0T)

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Product specifications for 300.9D Mini Excavators

The Cat 300.9D Mini Excavator delivers power and performance in a compact size to help you work in the tightest applications. Its ability to fit through a narrow doorway makes it an excellent machine for indoor demolition work.


Operational Data

Operating Weight - Without Safety Frame 935 kg
Digging Force - Bucket 8.9 kN
Digging Force - Stick 4.5 kN
Operating Weight - With Safety Frame 985 kg

Net Power 9.6 kW
Engine Model Yanmar 31NV70
Rated Speed 2100 r/min
Maximum Engine Output 13.7 kW
Gross Power - ISO 14396 13.7 kW
Diesel Tank Volume 10 l
Displacement 854 cm³
Flywheel Output ISO 9.6 kW
Battery 12 V, 20 Amp
Type Water cooled model 3-cylinder diesel engine
Make/Type Yanmar 31NV70
Emissions Meets U.S. EPA Tier 4 Final/EU Stage V emission standards.

Operating Weight - Without Safety Frame 935 kg
Operating Weight - With Safety Frame 985 kg
Operating Weight 935 kg

Dig Depth1731 mm
Undercarriage Width - Extended 864 mm
Width 730 mm
Height - With ROPS Safety Frame Folded Down 1507 mm
Maximum Dump Height 2035 mm
Maximum Dozer Lift Height 197 mm
Length - Undercarriage 1220 mm
Maximum Vertical Dig Depth 1349 mm
Minimum Front Linkage Swing Radius 1150 mm
Boom Swing Angle - Left 55 °
Undercarriage Width - Retracted 711 mm
Boom Swing Angle - Right 56 °
Maximum Reach 3074 mm
Maximum Reach - Ground Level 3023 mm
Transport Length - Arm Lowered 2746 mm
Track Width 180 mm
Tail Swing Radius 736 mm
Maximum Dozer Dig Depth 174 mm
Maximum Dig Height 2863 mm
Height - With ROPS Safety Frame Unfolded 2276 mm
Hydraulic System

Pumps 2 gear pumps
Discharge Capacity 11.4 + 11.4 L/min (3 + 3 gal/min)
Operating Pressure for the Work and Travel Hydraulics 170 bar
Operating Pressure Pivot 70 bar
Hydraulic Tank Capacity 14 l
Chassis and Swivel Gear

Gradeability 30°/58%
Travel Speed 1.8 km/h
Track Width 180 mm
Ground Clearance 127 mm
Ground Pressure 0.25 kg/cm²
Machine Swing Speed 8 r/min
Number of Rollers - Each Side 2
Operating Specifications

Stick Length - Standard 890 mm
Machine Overhang 318 mm
Dozer Blade

Height 200 mm
Dig Depth 174 mm
Width 700 mm
Lift Height 197 mm
Noise Emissions

Sound Power Level (LWA) (to 2000/14/EG) 93 dB(A)

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.

Simple Controls

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

Easy Service

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.


A range of tools is available to take advantage of the machine's 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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