Cat Excavators:

305.5E2 CR Mini Hydraulic Excavator

Engine Model
Cat® C2.4
Net Power
44.1 hp
Operating Weight
11958 lb
Weight – Canopy, Standard Stick
11503 lb

The Cat® 305.5E2 CR Mini Hydraulic Excavator delivers high performance, durability and versatility in a compact design to help you work in a variety of applications.



Benefits & Features

Product Specs

  • Engine

  • Engine Model
    Cat® C2.4
    Net Power
    44.1hp
    Rated Net Power @ 2,200 rpm – ISO 9249/EEC 80/1269
    44.1hp
    Bore
    3.4in
    Stroke
    4in
    Displacement
    146in3
    Gross Power – ISO 14396
    45.7hp
    Emissions
    Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards.
  • Weights*

  • Operating Weight
    11958lb
    Weight – Canopy, Standard Stick
    11503lb
    Weight – Canopy, Long Stick
    11596lb
    Weight – Cab, Standard Stick
    11863lb
    Weight – Cab, Long Stick
    11958lb
    Note
    *Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
  • Hydraulic System

  • Pump Flow at 2,400 rpm
    39.6gal/min
    Operating Pressure – Equipment
    3553psi
    Operating Pressure – Travel
    3553psi
    Operating Pressure – Swing
    3132psi
    Auxiliary Circuit – Primary (186 bar/2,734 psi)
    21.1gal/min
    Auxiliary Circuit – Secondary (174 bar/2,524 psi)
    6.6gal/min
    Digging Force – Stick (standard)
    6500lb
    Digging Force – Stick (long)
    5575lb
    Digging Force – Bucket
    11445lb
    Type
    Load Sensing Hydraulics with Variable Displacement Piston Pump
  • Swing System

  • Machine Swing Speed
    10rpm
    Boom Swing – Left* (without stop)
    80°
    Boom Swing – Left* (with stop)
    60°
    Boom Swing – Right
    50°
    Note
    *Automatic swing brake, spring applied, hydraulic release.
  • Blade

  • Width
    78.0in
    Height
    14.8in
    Dig Depth
    21.9in
    Lift Height
    15.9in
  • Service Refill Capacities

  • Cooling System
    2.8gal
    Engine Oil
    2.5gal
    Hydraulic Tank
    18gal
    Fuel Tank
    16.6gal
    Hydraulic System
    20.6gal
  • Travel System

  • Travel Speed – High
    2.8mph
    Travel Speed – Low
    1.7mph
    Max Traction Force – High Speed
    6025lb
    Max Traction Force – Low Speed
    10746lb
    Ground Pressure – Canopy
    4.5psi
    Ground Pressure – Cab
    4.6psi
    Gradeability (maximum)
    30°
  • Operating Specifications

  • Stick Length – Standard
    55in
    Stick Length – Long
    70in
    Counterweight
    364.4lb
  • Cab

  • Dynamic Operator Sound Pressure Level (ISO 6396:2008)
    81dB(A)
    Exterior Sound Power Level (ISO 6395:2008)*
    97dB(A)
    Note
    *European Union Directive “2000/14/EC”
  • Certification – Cab and Canopy

  • Roll Over Protective Structure (ROPS)
    ISO 12117-2
    Tip Over Protective Structure (TOPS)
    ISO 12117
    Top Guard
    ISO 10262 (Level I)
  • Undercarriage

  • Number of Carrier Rollers
    3
    Number of Track Rollers
    3
    Track Roller Type
    Triple Flange
  • Lift Capacities at Ground Level – Lift Point Radius: 3000 mm (9’8”)

  • Blade Down – Front
    5710lb
    Blade Up – Front
    3417lb
    Blade Down – Side
    2844lb
    Blade Up – Side
    2535lb
  • Lift Capacities at Ground Level – Lift Point Radius: 4500 mm (14’9”)

  • Blade Down – Front
    3042lb
    Blade Up – Front
    1808lb
    Blade Down – Side
    1521lb
    Blade Up – Side
    1367lb
  • Dimensions – Standard Stick

  • Dig Depth
    137in
    Vertical Wall
    92in
    Maximum Reach at Ground Level
    222in
    Maximum Reach
    228in
    Maximum Dig Height
    210in
    Maximum Dump Clearance
    150in
    Boom In Reach
    94in
    Tail Swing
    44in
    Maximum Blade Height
    16in
    Maximum Blade Depth
    22in
    Boom Height in Shipping Position
    69in
    O/A Shipping Height
    100in
    Swing Bearing Height
    24in
    O/A Undercarriage Length
    102in
    O/A Shipping Length
    210in
    Boom Swing Right
    31in
    Boom Swing Left
    27in
    Track Belt/Shoe Width
    16in
    O/A Track Width
    78in
  • Dimensions – Long Stick

  • Dig Depth
    152in
    Vertical Wall
    107in
    Maximum Reach at Ground Level
    237in
    Maximum Reach
    243in
    Maximum Dig Height
    220in
    Maximum Dump Clearance
    161in
    Boom In Reach
    100in
    Tail Swing
    44in
    Maximum Blade Height
    16in
    Maximum Blade Depth
    22in
    Boom Height in Shipping Position
    85in
    O/A Shipping Height
    100in
    Swing Bearing Height
    24in
    O/A Undercarriage Length
    102in
    O/A Shipping Length
    215in
    Boom Swing Right
    31in
    Boom Swing Left
    27in
    Track Belt/Shoe Width
    16in
    O/A Track Width
    78in

Equipment

  • Engine
    • Cat C2.4 diesel engine (meets U.S. EPA Tier 4 Final emission standards for North America and EU Stage IIIA/Tier 4 Interim emission standards for all other regions)
    • Automatic engine idle
    • Automatic engine shut-off
    • Automatic two speed travel
    • Diesel Particulate Filter (North America only)
    • Diesel Oxidation Catalyst (North America only)
    • Fuel and water separator
    • Power on demand
  • Hydraulic System
    • 1-way and 2-way (combined function)
    • Accumulator
    • Automatic swing parking brake
    • Auxiliary hydraulic lines
    • Adjustable auxiliary relief
    • Auxiliary line quick disconnects
    • Cat interlock system: hydraulic lockout
    • Continuous auxiliary flow
    • Ecology drain
    • Hydraulic oil cooler
    • High definition hydraulics
    • Load sensing/flow sharing
  • Operator Environment
    • 100% pilot control ergonomic joysticks
    • Adjustable armrests
    • COMPASS: complete, operation, maintenance, performance and security system
      • Multiple languages
    • Cup holder
    • Hydraulic neutral lockout bar
    • Literature holder
    • Pattern changer (optional in Europe)
    • Site reference system: leveling
    • Tool storage area
    • Travel control pedals with hand levers
    • Washable floor mat
  • Undercarriage
    • Dozer blade with float function
    • Track, rubber belt, 400 mm (16 in) width
    • Tie down eyes on track frame
    • Towing eye on base frame
  • Front Linkage
    • 200 degree bucket rotation
    • Certified lifting eye on bucket linkage (optional in Europe)
    • Front shovel capable
    • Thumb ready stick
  • Electrical
    • 12 volt electrical system
    • 60 ampere alternator
    • 650 CCA maintenance free battery
    • Fuse box
    • Ignition key start/stop switch
    • Slow blow fuse
    • Warning horn
  • Lights And Mirrors
    • Boom light with time delay capability
  • Safety And Security
    • Anti-theft system (COMPASS)
    • Caterpillar Corporate “One Key” System
    • Door locks
    • Lockable fuel cap
    • Retractable seat belt
    • Roll Over Protective Structure (ROPS) (ISO 12117-2)
    • Tip Over Protective Structure (TOPS) (ISO 12117)
    • Top guard – ISO 10262 (Level 1)
    • Travel alarm (optional in Europe)
  • Engine
    • Engine block heater
  • Hydraulic System
    • Quick coupler lines
    • Boom lowering check valve
    • Stick lowering check valve
    • Secondary auxiliary hydraulic lines
  • Operator Environment
    • Cab:
      • Air conditioning
      • Heat
      • High back suspension seat
      • Interior light
      • Interlocking front window system
      • Radio
      • Windshield wiper
  • Undercarriage
    • Power angle blade
    • Track, double grouser (steel), 400 mm (16 in)
    • Track, double grouser (steel) with rubber pad, 400 mm (16 in)
  • Front Linkage
    • Quick coupler: manual or hydraulic
    • Thumb
    • Buckets
    • Full range of performance matched work tools
      • Auger, hammer, ripper
  • Lights And Mirrors
    • Light, cab with time delay capability
    • Mirror, canopy right
    • Mirror, canopy left
    • Mirror, cab rear
  • Safety And Security
    • Battery disconnect
    • Beacon socket
    • Front wire mesh guard
    • Rearview camera
    • Vandal guard
  • Technology
    • Product Link
  • Other Attachments
    • Counterweight, extra

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