303.5C CR



Engineered by Caterpillar to deliver high levels of productivity, versatility and serviceability .


Engine Model Mitsubishi S3Q2-T Mitsubishi S3Q2-T Less
Net Power 39.0 hp 29.0 kW Less
Gross Power 40.5 hp 30.2 kW Less


Operating Weight 8356.0 lb 3790.0 kg Less
Operating Weight with Cab 8620.0 lb 3910.0 kg Less


Max digging depth - standard stick 10.3 ft 3150.0 mm Less
Max reach ground level - standard stick 17.2 ft 5240.0 mm Less
Height over cab 8.2 ft 2500.0 mm Less
Length to Center of Rollers 17.19 ft 5240.0 mm Less
Max cutting height - long stick 16.77 ft 5110.0 mm Less
Max cutting height - standard stick 16.47 ft 5020.0 mm Less
Max digging depth - long stick 11.32 ft 3450.0 mm Less
Max dump height - long stick 12.0 ft 3670.0 mm Less
Max dump height - standard stick 11.75 ft 3570.0 mm Less
Max horizontal reach - long stick 18.04 ft 5500.0 mm Less
Max horizontal reach - standard stick 17.19 ft 5240.0 mm Less
Max vertical dig depth - long stick 8.7 ft 2650.0 mm Less
Max vertical dig depth - standard stick 8.2 ft 2490.0 mm Less
Shipping Height 8.2 ft 2500.0 mm Less
Shipping Length 15.8 ft 4820.0 mm Less
Swing radius - rear 3.18 ft 970.0 mm Less
Track Gauge 4.86 ft 1480.0 mm Less
Track Shoe Width 0.98 ft 300.0 mm Less
Transport Width 5.84 ft 1780.0 mm Less
Width over track 5.84 ft 1780.0 mm Less

Engine Dimensions

Bore 3.5 in 88.0 mm Less
Stroke 4.1 in 103.0 mm Less
Displacement 116.0 in3 1.9 L Less

Travel System

Gradeability (max) - high 30.0 Degrees 30.0 Degrees Less
Max traction force - high speed 3979.0 lb 17.7 kN Less
Max traction force - low speed 7508.0 lb 33.4 kN Less
Travel Speed - High 2.9 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) 4856.0 lb 21.6 kN Less
Digging Force - Stick (long) 4384.0 lb 19.5 kN Less
Digging Force - Bucket 8498.0 lb 37.8 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 (245 bar, 3550 psi) 15.9 gal/min 60.0 L/min Less
Auxiliary circuits - secondary - at 174 bar 7.15 gal/min 27.0 L/min Less

Swing System

Machine Swing Speed 9.0 RPM 9.0 RPM Less
Boom swing - left (without stop) 70.0 Degrees 70.0 Degrees Less
Boom swing - left (with stop) 55.0 Degrees 55.0 Degrees Less
Boom Swing - Right 50.0 Degrees 50.0 Degrees Less

Sound Levels

Canopy 80.0 dB(A) 80.0 dB(A) Less
Cab 78.0 dB(A) 78.0 dB(A) Less


Width 70.0 in 1780.0 mm Less
Height 13.0 in 325.0 mm Less
Dig Depth 18.0 in 470.0 mm Less
Lift Height 16.0 in 400.0 mm Less

Service Refill Capacities

Cooling System 1.6 gal 6.0 L Less
Engine Oil 1.6 gal 6.0 L Less
Hydraulic Tank 9.8 gal 37.0 L Less
Fuel Tank 13.5 gal 51.0 L Less
Hydraulic System 17.2 gal 65.0 L Less

MSC Comments

MSC Spec Date 1/06 1/06 Less

Comfort and Ease of Operation

Class leading space and top level features contribute to a comfortable and productive environment .

Performance and Versatility

The range of Cat® buckets and hydraulically powered tools are machine matched to optimize performance .

Low Operating Costs

Good access to main check points and major components makes servicing and maintaining the 303.5C CR easier .

Angle Blade Configuration

Increased versatility and productivity are offered with the Cat® angle blade .

Customer Support

Industry-leading customer support is provided by the Cat® dealer network .

303.5C CR Standard Equipment

Additional counterweight 165 kg (364 lb)

Adjustable wrist rests


Automatic swing park brake

Auxiliary hydraulic circuit valve, controls and
  • 1-way hammer lines to the stick
  • 2-way (auger) auxiliary hydraulic lines to the stick

Auxiliary line quick couplers

Boom cylinder guard

Cab mounted work light

Canopy with FOPS ISO10262 (Level 1) and Tip-Over Protection ISO12117

Coat hook and cup holder

Control pattern changer

Dial type accelerator

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


Hydraulic oil cooler

Lockable storage box

Low maintenance linkage pin joints

Maintenance-free battery

Rubber track

Retractable seat belt

Standard stick

Suspension seat, vinyl covered

'Thumb ready' sticks

Travel alarm

Two speed travel

303.5C CR Optional Equipment

Air conditioning

Additional auxiliary lines

Biodegradable hydraulic oil

Boom check valve

Boom mounted light

Cab, fully glazed with FOPS ISO10262 (Level 1)
  • Tip-Over Protection ISO 12117 with: 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

Immobilizer system

Long stick

Mechanical quick coupler

Mirrors for cab and canopy

Radio installation kit Factory fitted radio/CD player

Seat belt, 75 mm (3 in) wide

Suspension seat, fabric covered

High back suspension seat, fabric covered

Tool kit

Work tools

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