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Caterpillar · Mini Excavator

Caterpillar 303C CR Specs

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Overview
The Caterpillar 303C CR is a mini excavator listed in the Heavy Equipment Hub equipment database with structured specifications for comparison, research, and machine selection. Key specification points include engine power of 30 hp, operating weight of 7,835 lb, working depth of 9.70 ft, reach of 16.90 ft, travel speed of 4.6 mph and fuel capacity of 11.9 gal. This model can be reviewed for excavation, trenching, loading, site preparation, and fleet comparison workflows. Use the full specifications table to compare the Caterpillar 303C CR against similar mini excavator models by power, weight, capacity, dimensions, speed, and other technical values.
Key Specifications
Operating Weight
7,835
lb
Net Power
30.50
hp
Gross Power
31
hp
Max Digging Depth
9.70
ft
Full Specifications
85 specs
Dimensions
Boom Swing - Right 50 deg
Dig Depth 18 ft / 5.49 m
Ground Clearance 1.04 ft / 0.32 m
Height - Over Cab 8.20 ft / 2.50 m
Height to Top of Cab 8.17 ft / 2.49 m
Length - Center Of Rollers 16.73 ft / 5.10 m
Length of Track on Ground 7.25 ft / 2.21 m
Max Cutting Height 16.25 ft / 4.95 m
Max Digging Depth 9.70 ft / 2.96 m
Max Loading Height 11.50 ft / 3.51 m
Max Reach Along Ground 16.90 ft / 5.15 m
Max Vertical Wall Digging Depth 7.10 ft / 2.16 m
Maximum Cutting Height - Long Stick 16.61 ft / 5.06 m
Maximum Cutting Height - Standard Stick 16.24 ft / 4.95 m
Maximum Digging Depth - Long Stick 10.50 ft / 3.20 m
Maximum Digging Depth - Standard Stick 9.60 ft / 2.93 m
Maximum Dump Height - Long Stick 11.84 ft / 3.61 m
Maximum Dump Height - Standard Stick 11.45 ft / 3.49 m
Maximum Horizontal Reach - Long Stick 17.55 ft / 5.35 m
Maximum Horizontal Reach - Standard Stick 16.73 ft / 5.10 m
Maximum Reach - Ground Level - Standard Stick 16.80 ft / 5.12 m
Maximum Vertical Dig Depth - Standard Stick 7.10 ft / 2.16 m
Removal Counterweight Clearance 2 lb / 1 kg
Shipping Height 8.20 ft / 2.50 m
Shipping Height Of Unit 8.21 ft / 2.50 m
Shipping Length 15.55 ft / 4.74 m
Shipping Length Of Unit 16.90 ft / 5.15 m
Standard stick 2
Swing Radius - Rear 2.92 ft / 0.89 m
Tail Swing Radius 2.55 ft / 0.78 m
Transport Width 5.09 ft / 1.55 m
Width - Over Track 5.09 ft / 1.55 m
Width To Outside Of Tracks 5.08 ft / 1.55 m
Engine
Alternator Supplied Amperage 50 A
Bore 3.50 in / 89 mm
Cab 82
Cooling System Fluid Capacity 1.60 gal / 6.1 L
Displacement 116 cu in / 1.9 L
Engine Make 2251
Engine Model S3Q2
Engine Oil Capacity 1.60 gal / 6.1 L
Fuel Capacity 11.90 gal / 45.0 L
Fuel Tank 11.90 gal / 45.0 L
Gross Power 31 hp / 23.1 kW
Height 13 ft / 3.96 m
Hydraulic Pump Flow Capacity 23.20 gal/min / 87.8 L/min
Hydraulic System Fluid Capacity 17.20 gal / 65.1 L
Hydraulic System Relief Valve Pressure 3,553 psi / 245.0 bar
Hydraulic Tank 9.80 gal / 37.1 L
Lift Height 16 ft / 4.88 m
Net Power 30 hp / 22.4 kW
Number of Cylinders 3
Operating Voltage 12 V
Operating Weight 7,835 lb / 3,554 kg
Operating Weight - With Cab 7,835 lb / 3,554 kg
Power Measured @ 2,300 rpm
Stroke 4.10 in / 104 mm
Swing Speed 9 deg
Travel Speed - High 2.90 mph / 4.7 km/h
Width 5.10 ft / 1.55 m
Hydraulics
15.9 gal/min 174
Auxiliary Circuit - Primary (245 Bar/3,553 Psi) 15.90 gal/min / 60.2 L/min
Auxiliary Circuits - Secondary - At 174 Bar 7.10 gal/min / 26.9 L/min
Canopy 78
Digging Force - Bucket 7,419 lb / 3,365 kg
Digging Force - Stick - Long 3,799 lb / 1,723 kg
Digging Force - Stick - Standard 4,249 lb / 1,927 kg
Engine Oil 1.60 gal / 6.1 L
Gradeability - Maximum - High 30 %
Maximum Traction Force - High Speed 3,979 lb / 1,805 kg
Maximum Traction Force - Low Speed 7,508 lb / 3,406 kg
Msc Spec Date 12
Net Power 31 hp / 22.7 kW
Operating Pressure - Equipment 3,553 psi / 245.0 bar
Operating Pressure - Swing 2,495 psi / 172.0 bar
Operating Pressure - Travel 3,553 psi / 245.0 bar
Travel Speed - Low 1.60 mph / 2.6 km/h
Other
Cooling System 1.60 gal / 6.1 L
Undercarriage
Boom Swing - Left - With Stop 55 deg
Boom Swing - Left - Without Stop 80 deg
Machine Swing Speed 9 deg
Max Travel Speed 4.60 mph / 7.4 km/h
Shoe Size 11.82 in / 300 mm
Track Gauge 4.10 ft / 1.25 m
Track Shoe Width 0.98 ft / 0.30 m
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Frequently Asked Questions

What is the operating weight of the Caterpillar 303C CR? +

The Caterpillar 303C CR has an operating weight of 7,835 lb (3,554 kg). This places it in a class suited for mini excavator applications where ground pressure and transport weight are key considerations.

How powerful is the Caterpillar 303C CR engine? +

The Caterpillar 303C CR produces 31 hp (23.1 kW) of engine power. This output is typical for its weight class and designed to handle demanding Mini Excavator work cycles efficiently.

What is the maximum digging depth of the Caterpillar 303C CR? +

The Caterpillar 303C CR has a maximum digging depth of 9.70 ft (2.96 m). This makes it suitable for trenching, foundation work, and other excavation tasks requiring vertical reach.

What is the maximum reach of the Caterpillar 303C CR? +

The Caterpillar 303C CR has a maximum reach along the ground of 16.90 ft (5.15 m), allowing it to work effectively across wide areas without repositioning.

What is the travel speed of the Caterpillar 303C CR? +

The Caterpillar 303C CR has a maximum travel speed of 4.6 mph (7.4 km/h), enabling efficient movement between work areas on the job site.

How does the Caterpillar 303C CR compare to similar Mini Excavator models? +

You can compare the Caterpillar 303C CR side by side with any other model using the Heavy Equipment Hub compare tool. Key comparison points include engine power, operating weight, digging depth, hydraulic flow, and overall dimensions.

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