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303.5C CR Mini Hydraulic Excavator

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

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Overview and Specifications

Blade
Width 70 in / 1780 mm
Height 12.8 in / 325 mm
Lift height 15.75 in / 400 mm
Dig depth 18.5 in / 470 mm

Swing System
Boom swing - left (with stop) 55 Degrees / 55 Degrees
Machine swing speed 9 RPM / 9 RPM
Boom swing - left (without stop) 70 Degrees / 70 Degrees
Swing - right 50 Degrees / 50 Degrees

Dimensions
Max digging depth - standard stick 10.3 ft / 3150 mm
Max reach ground level - standard stick 17.2 ft / 5240 mm

Engine
Net Power 39 hp / 29 kW
Gross power 41 hp / 30 kW
Engine Mitsubishi S3Q2-T

Travel System
Travel speed - high 2.8 mph / 4.6 km/h
Travel speed - low 1.6 mph / 2.6 km/h
Max traction force - high speed 3979 lb / 17.7 kN
Max traction force - low speed 7508 lb / 33.4 kN
Gradeability (max) - high 30 Degrees / 30 Degrees

Engine Dimensions
Stroke 4.05 in / 103 mm
Bore 3.45 in / 88 mm
Displacement 114.6 in3 / 1.879 L

Hydraulic System
Digging force - bucket 8500 lb / 37.8 kN
Operating pressures - equipment 3553 psi / 245 bar
Operating pressure - travel 3553 psi / 245 bar
Operating pressure - swing 2625 psi / 181 bar
Auxiliary circuit - primary (245 bar, 3550 psi) 15.9 gal/min / 60 L/min
Digging forces - stick (standard) 4860 lb / 21.6 kN
Digging force - stick (long) 4385 lb / 19.5 kN
Auxiliary circuits - Secondary - at 174 bar 7.15 gal/min / 27 L/min

Weights
Operating weight with cab 8620 lb / 3910 kg
Operating Weight 8355 lb / 3790 kg

Sound Levels
Cab 78 dB(A) / 78 dB(A)
Canopy 80 dB(A) / 80 dB(A)

Service Refill Capacities
Hydraulic tank 9.75 gal / 37 L
Cooling system 1.6 gal / 6 L
Fuel tank 13.45 gal / 51 L
Hydraulic system 17.17 gal / 65 L
Engine oil 1.6 gal / 6 L

Features & Benefits

Comfort and Ease of Operation
Cab or canopy, the 303.5C CR offers a spacious and comfortable work area with expansive legroom. Compact radius design gives greater machine versatility and the capability to work within confined areas.
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  • Impressive Cab Dimensions
  • Optional Air Conditioning
  • Sliding Cab Door
  • Fully Pilot Operated Controls
  • Automatic Two Speed Function
  • Joystick Mounted Auxiliary and Boom Swing Functions
  • Compact Radius Design
  • High Level of Standard Comfort Features
Impressive Cab Dimensions
Optional Air Conditioning
Sliding Cab Door
Fully Pilot Operated Controls
Automatic Two Speed Function
Joystick Mounted Auxiliary and Boom Swing Functions
Compact Radius Design
High Level of Standard Comfort Features
Performance and Versatility
High dig forces, fast cycle times and high bucket rotation angles deliver the productivity that customers demand. A choice of stick lengths and Cat Work Tools makes the 303.5C CR even more versatile.
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  • Exceptionally High Digging Forces
  • Turbocharged Engine
  • Stick Options
  • Bucket Angle
  • Wide Range of Work Tools
  • Auxiliary Lines and Connectors
  • Mechanical Quick Coupler
  • Dozer Blade Float Function
Exceptionally High Digging Forces
Turbocharged Engine
Stick Options
Bucket Angle
Wide Range of Work Tools
Auxiliary Lines and Connectors
Mechanical Quick Coupler
Dozer Blade Float Function
Low Operating Costs
Robust, reliable and easily serviced are key attributes of the C Series CR design. Service points are easily accessed through rear door and side cover, and a 500-hour engine oil change period lowers operating costs.
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  • Swing Out Rear Door
  • S·O·SSM Oil Sampling Valve
  • 500 Hour Oil and Filter Change Period
  • Lifting Side Hood
  • Front Linkage
  • End Dampening
  • Liner Bearings
Swing Out Rear Door
S·O·SSM Oil Sampling Valve
500 Hour Oil and Filter Change Period
Lifting Side Hood
Front Linkage
End Dampening
Liner Bearings
Angle Blade Configuration
The versatility and productivity of the Cat C Series machine can be made even more productive by ordering the hydraulic angling dozer blade configuration.
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  • Versatility and Productivity
  • Strong and Durable
  • Angle Blade Positioning
  • Single Control Lever
  • Full Pilot Control
  • Load Sensing Hydraulics, High Traction Force and Auto 2-Speed Travel
  • Excellent Blade Visibility
Versatility and Productivity
Strong and Durable
Angle Blade Positioning
Single Control Lever
Full Pilot Control
Load Sensing Hydraulics, High Traction Force and Auto 2-Speed Travel
Excellent Blade Visibility
Customer Support
Caterpillar dealers offer unmatched customer support with excellent equipment management services and fast parts availability, resulting in maximum uptime and minimum repair costs.
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  • Selection
  • Purchase
  • Operation
  • Equipment Maintenance Services
  • Unmatched Product Support
Selection
Purchase
Operation
Equipment Maintenance Services
Unmatched Product Support

Standard Equipment

Additional counterweight 165 kg (364 lb)
Adjustable wrist rests
Alternator
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
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
Horn
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

Optional Equipment

Air conditioning
Additional auxiliary lines
Biodegradable hydraulic oil
Boom check valve
Boom mounted light
Cab, fully glazed with FOPS ISO10262 (Level 1) and
  • Tip-Over Protection ISO 12117 with: heater/defroster, interior light and windshield wiper/washer
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

For more information, please contact your sales representative.