The Caterpillar 307D is a compact mini excavator designed for excavation, trenching, grading, and site preparation in confined work areas. It is part of Caterpillar's 7-ton class mini excavator range and is commonly used in construction, utility, landscaping, and municipal applications. The 307D features a reduced tail swing design, hydraulic versatility, and operator controls suited for precision work. Typical configurations include a dozer blade, auxiliary hydraulics, and a comfortable enclosed or open cab option. The Caterpillar 307D is valued for maneuverability, transportability, and performance on jobs where larger excavators cannot operate efficiently.
Boom/Stick Excavator Option 1
Caterpillar 307D Mini Excavator Boom/Stick Excavator Option 1 specifications
Max Cutting Height
23.80 ft (7.25 m)
Max Digging Depth
13.30 ft (4.05 m)
Max Loading Height
17.10 ft (5.21 m)
Max Reach Along Ground
20.20 ft (6.16 m)
Max Vertical Wall Digging Depth
12.00 ft (3.66 m)
Shipping Height of Unit
8.70 ft (2.65 m)
Shipping Length of Unit
18.80 ft (5.73 m)
Boom/Stick Excavator Option 2
Caterpillar 307D Mini Excavator Boom/Stick Excavator Option 2 specifications
Max Cutting Height
25.10 ft (7.65 m)
Max Digging Depth
15.10 ft (4.60 m)
Max Loading Height
18.50 ft (5.64 m)
Max Reach Along Ground
21.90 ft (6.68 m)
Max Vertical Wall Digging Depth
13.70 ft (4.18 m)
Shipping Height of Unit
8.70 ft (2.65 m)
Shipping Length of Unit
18.80 ft (5.73 m)
Bucket
Caterpillar 307D Mini Excavator Bucket specifications
Reference Bucket Capacity
0.40 cu yd (0.31 cu m)
Dimensions
Caterpillar 307D Mini Excavator Dimensions specifications
Ground Clearance
1.20 ft (0.37 m)
Height - Top of Cab
8.70 ft (2.65 m)
Removal Counterweight Clearance
2.50 ft (0.76 m)
Tail Swing Radius
5.80 ft (1.77 m)
Width to Outside of Tracks
7.60 ft (2.32 m)
Engine
Caterpillar 307D Mini Excavator Engine specifications
Aspiration
turbocharged
Displacement
172.70 cu in (2,830.05 cu cm)
Engine Model
4M40 TL
Gross Power
57.70 hp (43.03 kw)
Make
Mitsubishi
Net Power
55.70 hp (41.54 kw)
Operating Specifications
Caterpillar 307D Mini Excavator Operating Specifications specifications
Alternator Supplied Amperage
35 amps
Cooling System Fluid Capacity
4.20 gal (15.90 l)
Engine Oil Capacity
3.40 gal (12.87 l)
Fuel Capacity
35.70 gal (135.12 l)
Hydraulic Pump Flow Capacity
71.90 gpm (272.14 lpm)
Hydraulic System Fluid Capacity
24.90 gal (94.25 l)
Hydraulic System Relief Valve Pressure
4641 psi
Operating Voltage
24 V
Operating Weight
15,597.80 lbs (7,075.05 kg)
Swing Mechanism
Caterpillar 307D Mini Excavator Swing Mechanism specifications
Swing Speed
10 rpm
Undercarriage
Caterpillar 307D Mini Excavator Undercarriage specifications
Max Travel Speed
1.20 mph (1.93 kph)
Shoe Size
17.80 in (45.21 cm)
Track Gauge
6.10 ft (1.86 m)
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