Cat Excavators:

303.5E CR Hydraulic Excavator

Engine Model
Cat® C1.8
Net Power
31.6 hp
Operating Weight
7734.0 lb
Operating Weight with Cab
8139.0 lb

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



Benefits & Features

Product Specs

  • Engine

  • Engine Model
    Cat® C1.8
    Net Power
    31.6hp
    Gross Power
    33.3hp
  • Weights

  • Operating Weight
    7734.0lb
    Operating Weight with Cab
    8139.0lb
  • Dimensions

  • Max digging depth - standard stick
    9.6ft
    Max reach ground level - standard stick
    16.7ft
    Height over cab
    8.2ft
    Max cutting height - long stick
    16.5ft
    Max cutting height - standard stick
    16.2ft
    Max dump height - long stick
    11.9ft
    Max dump height - standard stick
    11.5ft
    Max horizontal reach - long stick
    17.8ft
    Max horizontal reach - standard stick
    17.1ft
    Max vertical dig depth - long stick
    8.2ft
    Max vertical dig depth - standard stick
    7.7ft
    Shipping Height
    8.2ft
    Shipping Length
    15.5ft
    Track Shoe Width
    1.0ft
    Transport Width
    5.8ft
  • Engine Dimensions

  • Bore
    3.4in
    Stroke
    4.0in
    Displacement
    110.0in3
  • Hydraulic System

  • Operating Pressure - Equipment
    3553.0psi
    Digging Forces - Stick (standard)
    4249.0lb
    Digging Force - Stick (long)
    3799.0lb
    Digging Force - Bucket
    7419.0lb
    Operating Pressure - Travel
    3553.0psi
    Operating Pressure - Swing
    2625.0psi
    Auxiliary circuit - primary
    15.9gal/min
    Auxiliary circuit - secondary
    7.1gal/min
  • Swing System

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

  • Width
    70.0in
    Height
    12.8in
    Dig Depth
    18.5in
    Lift Height
    15.7in
  • Service Refill Capacities

  • Cooling System
    1.5gal
    Engine Oil
    1.8gal
    Hydraulic Tank
    11.2gal
    Fuel Tank
    12.2gal
    Hydraulic System
    17.2gal
  • Travel System

  • Max traction force - high speed
    3799.0lb
    Max traction force - low speed
    6969.0lb
    Travel Speed - High
    2.8mph
    Travel Speed - Low
    1.6mph
  • MSC Comments

  • MSC Spec Date
    3/06

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)
  • 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

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