303.5E CR

Back

Buy A Mini Excavator Now, Pay Later. Skip 3 Payments and get up to a $1,000 Cat Work Tool credit!
Learn More
View Product Downloads
Please answer to continue. Select an option to continue. Enter a valid email address.
Yes, I would like to receive future communications from Caterpillar extended enterprise and dealer network..

Overview

The Cat 303.5E CR delivers high performance in a compact radius design to help you work in the tightest applications.

Engine

Units:
Engine Model Cat® C1.8 Cat® C1.8 Less
Net Power 31.6 hp 23.6 kW Less
Gross Power 33.3 hp 24.8 kW Less

Weights

Operating Weight 7734.0 lb 3508.0 kg Less
Operating Weight with Cab 8139.0 lb 3692.0 kg Less

Dimensions

Max digging depth - standard stick 9.6 ft 2880.0 mm Less
Max reach ground level - standard stick 16.7 ft 5060.0 mm Less
Height over cab 8.2 ft 2500.0 mm Less
Max cutting height - long stick 16.5 ft 5030.0 mm Less
Max cutting height - standard stick 16.2 ft 4920.0 mm Less
Max dump height - long stick 11.9 ft 3640.0 mm Less
Max dump height - standard stick 11.5 ft 3520.0 mm Less
Max horizontal reach - long stick 17.8 ft 5440.0 mm Less
Max horizontal reach - standard stick 17.1 ft 5200.0 mm Less
Max vertical dig depth - long stick 8.2 ft 2470.0 mm Less
Max vertical dig depth - standard stick 7.7 ft 2320.0 mm Less
Shipping Height 8.2 ft 2500.0 mm Less
Shipping Length 15.5 ft 4730.0 mm Less
Track Shoe Width 1.0 ft 300.0 mm Less
Transport Width 5.8 ft 1780.0 mm Less

Engine Dimensions

Bore 3.4 in 87.0 mm Less
Stroke 4.0 in 102.4 mm Less
Displacement 110.0 in3 1.8 L Less

Travel System

Max traction force - high speed 3799.0 lb 16.9 kN Less
Max traction force - low speed 6969.0 lb 31.0 kN Less
Travel Speed - High 2.8 mph 4.6 km/h Less
Travel Speed - Low 1.6 mph 2.6 km/h Less

Hydraulic System

Operating Pressure - Equipment 3553.0 psi 245.0 bar Less
Digging Forces - Stick (standard) 4249.0 lb 18.9 kN Less
Digging Force - Stick (long) 3799.0 lb 16.9 kN Less
Digging Force - Bucket 7419.0 lb 33.0 kN Less
Operating Pressure - Travel 3553.0 psi 245.0 bar Less
Operating Pressure - Swing 2625.0 psi 181.0 bar Less
Auxiliary circuit - primary 15.9 gal/min 60.0 L/min Less
Auxiliary circuit - secondary 7.1 gal/min 27.0 L/min Less

Swing System

Machine Swing Speed 9.0 RPM 9.0 RPM Less
Boom swing - left (without stop) 80.0 Degrees 80.0 Degrees Less
Boom swing - left (with stop) 55.0 Degrees 55.0 Degrees Less
Boom Swing - Right 50.0 Degrees 50.0 Degrees Less

Blade

Width 70.0 in 1780.0 mm Less
Height 12.8 in 325.0 mm Less
Dig Depth 18.5 in 470.0 mm Less
Lift Height 15.7 in 400.0 mm Less

Service Refill Capacities

Cooling System 1.5 gal 5.5 L Less
Engine Oil 1.8 gal 7.0 L Less
Hydraulic Tank 11.2 gal 42.3 L Less
Fuel Tank 12.2 gal 46.0 L Less
Hydraulic System 17.2 gal 65.0 L Less

MSC Comments

MSC Spec Date 3/06 3/06 Less

Operator Station

Superior comfort to keep you productive throughout the work day.


Performance

Powerful digging with precise control.


Zero Tail Swing

Work in the tightest areas.


Coupler and Work Tool Options

New coupler design and multiple work tools increase versatility.


Dozer Blade

Standard dozer blade maximizes productivity.


Undercarriage

Stability and durability.


Serviceability

Simplified service and maintenance saves you time and money.


Customer Support

Support you can count on.


303.5E CR Standard Equipment

1-way and 2-way (combined function) auxiliary hydraulic lines

Adjustable wrist rests

Alternator

Automatic engine idle

Automatic swing park brake

Automatic two speed travel

Auxiliary line quick disconnects

Boom cylinder guard

Cab mounted work light

Canopy with FOPS ISO 10262 (Level 1) and Tip-Over Protection (TOPS) ISO 12117

Coat hook

Cup holder

Control pattern changer (not available in Europe)

COMPASS display panel

Dozer blade with float function

Floor mat

Foot travel pedals

Gauges or indicators for fuel level engine coolant temperature, hour meter, engine oil pressure, air cleaner, alternator and glow plugs, service interval

Horn

Hydraulic oil cooler

Lifting eye on bucket linkage (optional in Europe)

Lockable storage box

Low maintenance linkage pin joints

Maintenance free battery

Rubber track

Seatbelt, 76 mm (3 in) wide, retractable (optional in Europe)

Standard stick

Suspension seat, vinyl covered

"Thumb ready" stick (standard equipment in all regions except Europe)

Travel alarm (optional in Europe)

303.5E CR Optional Equipment

Air conditioning

Angle dozer blade with float function

Beacon socket for canopy machines

Boom check valve (Europe only)

Boom mounted light

Cab, radio ready with FOPS ISO 10262 (Level 1), Tip-Over Protection (TOPS) ISO 12117, heater/defroster, interior light and windshield wiper/washer

Ecology drain valve for hydraulic tank

Ecology drain valve for engine oil

Fan and sun blind installation

Front screen guard for cab and canopy

High back suspension seat, fabric covered

Hydraulic quick coupler lines

Long stick

Mechanical quick coupler

Mirrors for cab and canopy

Secondary auxiliary hydraulic lines

Steel track and steel track with rubber pads

Our Customers Say It Best - Blain Gibson

"Caterpillar makes my job easy because the technology on their newer equipment helps the job go faster."

Watch Video
Placeholder image
Buy A Mini Excavator Now, Pay Later. Skip 3 Payments and get up to a $1,000 Cat Work Tool credit!
Learn More
Mini Hydraulic Excavators Coupler and Attachments - Video

Watch the illustration to learn how the Cat® dual lock pin grabber coupler disengages with the bucket on Cat Mini Excavators.

Watch Video