The Caterpillar 300.9D is a compact mini excavator designed for confined job sites, landscaping, utility work, and light construction. As part of Caterpillar's mini excavator range, the 300.9D offers a small operating footprint, easy transport, and access to narrow work areas where larger machines cannot operate. It is commonly used for trenching, digging, grading, and material handling in urban and residential environments. The model is known for its zero or minimal tail swing design, simple controls, and compatibility with a range of buckets and attachments. The Caterpillar 300.9D supports efficient excavation in tight spaces.
General Specifications
Caterpillar 300.9D Mini Excavator General Specifications specifications
Digging Depth
5.70 ft (1.74 m) — Starting 2025 Model Year
Digging Reach
9.90 ft (3.02 m) — Starting 2025 Model Year
Engine
18.00 hp (13.42 kw) — Starting 2025 Model Year
Operating Weight
2,170.00 lbs (984.30 kg) — Starting 2025 Model Year
Chassis And Swivel Gear
Caterpillar 300.9D Mini Excavator Chassis And Swivel Gear specifications
Gradeability
30 degrees/58%
Ground Clearance
5.00 in (12.70 cm)
Ground Pressure
3.5 psi
Machine Swing Speed
8 rpm
Number Of Rollers - Each Side
2
Track Width
7.00 in (17.78 cm)
Travel Speed
1.13 mph (1.82 kph)
Dimensions
Caterpillar 300.9D Mini Excavator Dimensions specifications
Boom Swing Angle - Left
55 degrees
Boom Swing Angle - Right
56 degrees
Height
7.50 ft (2.29 m)
Height - With Rops Safety Frame Folded Down
4.95 ft (1.51 m)
Height - With Rops Safety Frame Unfolded
7.47 ft (2.28 m)
Length
9.00 ft (2.74 m)
Length - Undercarriage
4.00 ft (1.22 m)
Maximum Dig Height
9.39 ft (2.86 m)
Maximum Digging Depth
5.68 ft (1.73 m)
Maximum Dozer Dig Depth
7.00 in (17.78 cm)
Maximum Dozer Lift Height
8.00 in (20.32 cm)
Maximum Dump Height
6.68 ft (2.04 m)
Maximum Reach
10.09 ft (3.08 m)
Maximum Reach - Ground Level
9.92 ft (3.02 m)
Maximum Vertical Dig Depth
4.43 ft (1.35 m)
Minimum Front Linkage Swing Radius
3.77 ft (1.15 m)
Tail Swing Radius
2.41 ft (0.73 m)
Track Width
7.00 in (17.78 cm)
Transport Length - Arm Lowered
9.00 ft (2.74 m)
Undercarriage Width - Extended
2.83 ft (0.86 m)
Undercarriage Width - Retracted
2.33 ft (0.71 m)
Weight
2,170.00 lbs (984.13 kg)
Width
28.80 in (73.15 cm)
Dozer Blade
Caterpillar 300.9D Mini Excavator Dozer Blade specifications
Dig Depth
7.00 in (17.78 cm)
Height
8.00 in (20.32 cm)
Lift Height
8.00 in (20.32 cm)
Width
28.00 in (71.12 cm)
Engine
Caterpillar 300.9D Mini Excavator Engine specifications
Battery
12 V, 20 Amp
Diesel Tank Volume
2.70 gal (10.22 l)
Displacement
52.00 cu in (852.13 cu cm)
Engine Make/Type
Yanmar 31NV70
Engine Model
Yanmar 31NV70
Engine Type
Water cooled model 3-cylinder diesel engine
Flywheel Output Iso
13.00 hp (9.69 kw)
Gross Power - Iso 14396
18.00 hp (13.42 kw)
Maximum Engine Output
18.00 hp (13.42 kw)
Net Power
13.00 hp (9.69 kw)
Rated Speed
2100 rpm
Hydraulic System
Caterpillar 300.9D Mini Excavator Hydraulic System specifications
Discharge Capacity
11.4 + 11.4 L/min (3 + 3 gal/min)
Hydraulic Tank Capacity
3.70 gal (14.00 l)
Operating Pressure For The Work And Travel Hydraulics
2466 psi
Operating Pressure Pivot
1015 psi
Pumps
2 gear pumps
Noise Emissions
Caterpillar 300.9D Mini Excavator Noise Emissions specifications
Sound Power Level (Lwa) (To 2000/14/Eg)
93 dB(A)
Operating Specifications
Caterpillar 300.9D Mini Excavator Operating Specifications specifications
Machine Overhang
12.50 in (31.75 cm)
Stick Length - Standard
34.80 in (88.39 cm)
Operational
Caterpillar 300.9D Mini Excavator Operational specifications
Operating Weight
2,061.00 lbs (934.86 kg)
Operational Data
Caterpillar 300.9D Mini Excavator Operational Data specifications
Digging Force - Bucket
2,000.00 lbs (907.19 kg)
Digging Force - Stick
1,011.00 lbs (458.58 kg)
Operating Weight - With Safety Frame
2,170.00 lbs (984.30 kg)
Operating Weight - Without Safety Frame
2,061.00 lbs (934.86 kg)
Weights
Caterpillar 300.9D Mini Excavator Weights specifications
Operating Weight - With Safety Frame
2,170.00 lbs (984.30 kg)
Operating Weight - Without Safety Frame
2,061.00 lbs (934.86 kg)
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