300.9D Mini Excavator

Overview of the Cat 300.9D Overview of the Cat 300.9D
Introducing the Cat 300.9D Introducing the Cat 300.9D
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Starting at $29,272

*The pricing shown utilizes the Manufacturer's Suggested Retail Price (MSRP) that is published for the machine (without any attachments or protection plans). The actual prices and terms and conditions of sale for all products are to be solely determined by Western States Cat.


Net Power13 HP (9.6 kW)
Operating Weight2061 lb (935 kg)
Dig Depth68 in (1731 mm)
Engine ModelYanmar 31NV70
Caterpillar is pleased to announce the introduction of the 300.9D sub 3 ton 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.


Net Power13 HP (9.6 kW)
Operating Weight2061 lb (935 kg)
Dig Depth68 in (1731 mm)
Engine ModelYanmar 31NV70
Pumps2 gear pumps
Rated Speed2100 r/min (2100 r/min)
Discharge Capacity11.4 + 11.4 L/min (3 + 3 gal/min)
Operating Weight - Without Safety Frame2061 lb (935 kg)
Track Width7 in (180 mm)
Tail Swing Radius2.41 ft (736 mm)
Maximum Dozer Dig Depth7 in (174 mm)
Maximum Dig Height9.39 ft (2863 mm)
Height - With ROPS Safety Frame Unfolded7.47 ft (2276 mm)
Operating Pressure for the Work and Travel Hydraulics2466 psi (170 bar)
Operating Pressure Pivot1015 psi (70 bar)
Hydraulic Tank Capacity3.7 gal (US) (14 l)
Track Width7 in (180 mm)
Travel Speed1.12 mile/h (1.8 km/h)
Maximum Reach - Ground Level9.92 ft (3023 mm)
Ground Clearance5 in (127 mm)
Ground Pressure3.5 psi (0.25 kg/cm²)
Machine Swing Speed8 r/min (8 r/min)
Number of Rollers - Each Side2
Stick Length - Standard34.8 in (890 mm)
Machine Overhang12.5 in (318 mm)
Height8 in (200 mm)
Dig Depth7 in (174 mm)
Width28 in (700 mm)
Lift Height8 in (197 mm)
Transport Length - Arm Lowered9 ft (2746 mm)
Undercarriage Width - Retracted2.33 ft (711 mm)
Maximum Reach10.09 ft (3074 mm)
EmissionsMeets U.S. EPA Tier 4 Final/EU Stage V emission standards.
Digging Force - Stick1011 lb (4.5 kN)
Operating Weight - With Safety Frame2170 lb (985 kg)
Maximum Engine Output18 HP (13.7 kW)
Gross Power - ISO 1439618 HP (13.7 kW)
Diesel Tank Volume2.64 gal (US) (10 l)
Displacement52 in³ (854 cm³)
Flywheel Output ISO13 HP (9.6 kW)
Battery12 V, 20 Amp
TypeWater cooled model 3-cylinder diesel engine
Make/TypeYanmar 31NV70
Operating Weight - Without Safety Frame2061 lb (935 kg)
Boom Swing Angle - Right56 ° (56 °)
Operating Weight - With Safety Frame2170 lb (985 kg)
Undercarriage Width - Extended2.83 ft (864 mm)
Width2.4 ft (730 mm)
Height - With ROPS Safety Frame Folded Down4.94 ft (1507 mm)
Maximum Dump Height6.68 ft (2035 mm)
Maximum Dozer Lift Height8 in (197 mm)
Length - Undercarriage4 ft (1220 mm)
Maximum Vertical Dig Depth4.43 ft (1349 mm)
Minimum Front Linkage Swing Radius3.77 ft (1150 mm)
Boom Swing Angle - Left55 ° (55 °)
Digging Force - Bucket2000 lb (8.9 kN)
Sound Power Level (LWA) (to 2000/14/EG)93 dB(A) (93 dB(A))

Benefits and Features

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.

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.

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.

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.

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.