Cat Excavators:

304E2 CR Mini Hydraulic Excavator

304E2 CR Mini Hydraulic Excavator with Swing Boom
    Engine Model
    Cat® C2.4
    Net Power
    40.2 hp
    Weight – Canopy, Standard Stick
    8655 lb
    Rated Net Power @ 2,200 rpm – ISO 9249/EEC 80/1269
    40.2 hp

    The Cat® 304E2 CR Mini Hydraulic Excavator delivers efficient performance, durability and versatility in a compact design to help you work in a variety of applications.



    Product Specs

    • Engine

    • Engine Model
      Cat® C2.4
      Net Power
      40.2hp
      Rated Net Power @ 2,200 rpm – ISO 9249/EEC 80/1269
      40.2hp
      Bore
      3.4in
      Stroke
      4in
      Displacement
      146in3
      Engine Model
      Cat® C2.4
      Net Power
      40.2HP
      Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/1269
      40.2HP
      Bore
      3.4in
      Displacement
      146in³
      Stroke
      4in
      Emissions
      *Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards.
      Gross Power - ISO 14396
      41.8HP
      Gross Power – ISO 14396
      41.8hp
      Emissions
      *Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards.
    • Weights*

    • Weight – Canopy, Standard Stick
      8655lb
      Weight - Canopy, Standard Stick
      8655lb
      Note
      *Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
      Weight - Cab, Long Stick
      8996lb
      Weight - Cab, Standard Stick
      8930lb
      Weight - Canopy, Long Stick
      8721lb
      Operating Weight
      8996lb
      Weight – Canopy, Long Stick
      8721lb
      Weight – Cab, Standard Stick
      8930lb
      Weight – Cab, Long Stick
      8996lb
      Note
      *Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
      Note
      8721lb
    • Hydraulic System

    • Pump Flow at 2,200 rpm
      26.4gal/min
      Auxiliary Circuit – Primary (186 bar/2,734 psi)
      18.5gal/min
      Auxiliary Circuit – Secondary (174 bar/2,524 psi)
      6.6gal/min
      Auxiliary Circuit - Primary (186 bar/2,734 psi)
      18.5gal/min
      Auxiliary Circuit - Secondary (174 bar/2,524 psi)
      6.6gal/min
      Pump Flow at 2,200 rpm
      26.4gal/min
      Digging Force - Bucket
      8498lb
      Type
      Load Sensing Hydraulics with Variable Displacement Piston Pump
      Operating Pressure - Equipment
      3553psi
      Operating Pressure - Travel
      3553psi
      Operating Pressure - Swing
      3132psi
      Digging Force - Stick - Standard
      4856lb
      Digging Force - Stick - Long
      4384lb
      Digging Force – Bucket
      8498lb
      Type
      Load Sensing Hydraulics with Variable Displacement Piston Pump
    • Swing System

    • Machine Swing Speed
      10rpm
      Boom Swing – Left (without stop)*
      70°
      Boom Swing – Left (with stop)*
      55°
      Boom Swing – Right
      50°
      Machine Swing Speed
      10r/min
      Boom Swing - Left - With Stop*
      55°
      Boom Swing - Left - Without Stop*
      70°
      Boom Swing - Right
      50°
      Note
      *Automatic swing brake, spring applied, hydraulic release.
      Note
      *Automatic swing brake, spring applied, hydraulic release.
    • Blade

    • Width
      76.8in
      Width
      76.8in
      Height
      12.8in
      Dig Depth
      18.5in
      Lift Height
      15.7in
    • Service Refill Capacities

    • Cooling System
      1.5gal
      Engine Oil
      2.5gal
      Hydraulic Tank
      11.2gal
      Fuel Tank
      12.2gal
      Hydraulic System
      17.2gal
      Cooling System
      1.5gal (US)
      Engine Oil
      2.5gal (US)
      Hydraulic Tank
      11.2gal (US)
      Fuel Tank
      12.2gal (US)
      Hydraulic System
      17.2gal (US)
    • Travel System

    • Travel Speed – High
      3.2mph
      Travel Speed – Low
      2.1mph
      Travel Speed - High
      3.2mile/h
      Travel Speed - Low
      2.1mile/h
      Gradeability - Maximum
      30°
      Ground Pressure - Cab
      4.3psi
      Ground Pressure - Canopy
      4.1psi
      Maximum Traction Force - High Speed
      3799lb
      Maximum Traction Force - Low Speed
      6969lb
      Ground Pressure – Canopy
      4.1psi
      Ground Pressure – Cab
      4.3psi
      Gradeability (maximum)
      30°
    • Dimensions – Standard Stick

    • Boom Swing Right
      29in
      Boom Swing Left
      26in
      Track Belt/Shoe Width
      14in
      O/A Track Width
      77in
      Dig Depth
      123in
      Vertical Wall
      95in
      Maximum Reach at Ground Level
      206in
      Maximum Reach
      211in
      Maximum Dig Height
      196in
      Maximum Dump Clearance
      141in
      Boom In Reach
      83in
      Tail Swing
      38in
      Maximum Blade Height
      16in
      Maximum Blade Depth
      19in
      Boom Height in Shipping Position
      58in
      O/A Shipping Height
      98in
      Swing Bearing Height
      22in
      O/A Undercarriage Length
      87in
      O/A Shipping Length
      190in
    • Dimensions – Long Stick

    • Dig Depth
      135in
      Vertical Wall
      101in
      Maximum Reach at Ground Level
      215in
      Maximum Reach
      220in
      Maximum Dig Height
      200in
      Maximum Dump Clearance
      145in
      Boom In Reach
      87in
      Tail Swing
      38in
      Maximum Blade Height
      16in
      Maximum Blade Depth
      19in
      Boom Height in Shipping Position
      70in
      O/A Shipping Height
      98in
      Swing Bearing Height
      22in
      O/A Undercarriage Length
      87in
      O/A Shipping Length
      194in
      Boom Swing Right
      29in
      Boom Swing Left
      26in
      Track Belt/Shoe Width
      14in
      O/A Track Width
      77in
    • Cab

    • Dynamic Operator Sound Pressure Level (ISO 6396:2008)
      81dB(A)
      Exterior Sound Power Level - ISO 6395:2008*
      96dB(A)
      Note
      *European Union Directive “2000/14/EC”
      Dynamic Operator Sound Pressure Level (ISO 6396:2008)
      81dB(A)
      Exterior Sound Power Level (ISO 6395:2008)*
      96dB(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)
    • Dimensions - Long Stick

    • Boom Height - Shipping Position
      70in
      Boom In Reach
      87in
      Boom Swing - Left
      26in
      Boom Swing - Right
      29in
      Dig Depth
      135in
      Maximum Blade Depth
      19in
      Maximum Blade Height
      16in
      Maximum Dig Height
      200in
      Maximum Dump Clearance
      145in
      Maximum Reach
      220in
      Maximum Reach - Ground Level
      215in
      O/A Shipping Height
      98in
      O/A Shipping Length
      194in
      O/A Track Width
      77in
      O/A Undercarriage Length
      87in
      Swing Bearing - Height
      22in
      Tail Swing
      38in
      Track Belt/Shoe Width
      14in
      Vertical Wall
      101in
    • Dimensions - Standard Stick

    • Boom Height - Shipping Position
      58in
      Boom In Reach
      83in
      Boom Swing - Left
      26in
      Boom Swing - Right
      29in
      Dig Depth
      123in
      Maximum Blade Depth
      19in
      Maximum Blade Height
      16in
      Maximum Dig Height
      196in
      Maximum Dump Clearance
      141in
      Maximum Reach
      211in
      Maximum Reach - Ground Level
      206in
      O/A Shipping Height
      98in
      O/A Shipping Length
      190in
      O/A Track Width
      77in
      O/A Undercarriage Length
      87in
      Swing Bearing - Height
      22in
      Tail Swing
      38in
      Track Belt/Shoe Width
      14in
      Vertical Wall
      95in
    • Operating Specifications

    • Machine Overhang
      0in
      Stick Length - Long
      64in
      Stick Length - Standard
      52in
      Stick Length – Standard
      52in
      Stick Length – Long
      64in
      Machine Overhang
      0in
    • Undercarriage

    • Number of Carrier Rollers
      1
      Number of Track Rollers
      4
      Track Roller Type
      Center Flange
      Number of Carrier Rollers
      1
      Number of Track Rollers
      4
      Track Roller Type
      Center Flange
    • Air Conditioning System

    • Air Conditioning
      The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg of refrigerant which has a CO2 equivalent of 1.4 metric tonnes.
    • 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)
    • Lift Capacities at Ground Level - Lift Point Radius: 3000 mm (118 in)

    • Blade Down - Front
      3462lb
      Blade Up - Front
      1808lb
      Blade Down - Side
      2007lb
      Blade Up - Side
      1808lb
    • Lift Capacities at Ground Level - Lift Point Radius: 4500 mm (177 in)

    • Blade Down - Front
      1896lb
      Blade Up - Front
      948lb
      Blade Down - Side
      1058lb
      Blade Up - Side
      948lb

    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, 350 mm (14 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)
    • Technology
      • Product Link
    • 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), 350 mm (14 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

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