304E2 CR

Heavy Equipment

304E2 CR

Net Power
40.2 HP / 30 kW
Machine Swing Speed
10 r/min
Width
76.8 in / 1950 mm

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.

Engine
Engine Model Cat® C2.4
Net Power 40.2 HP / 30 kW
Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 40.2 HP / 30 kW
Bore 3.4 in / 87 mm
Displacement 146 in³ / 2.4 l
Stroke 4 in / 102.4 mm
Emissions *Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards.
Gross Power - ISO 14396 41.8 HP / 31.2 kW
Weights*
Operating Weight 8996 lb / 4080 kg
Weight - Canopy, Standard Stick 8655 lb / 3925 kg
Note *Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Weight - Cab, Long Stick 8996 lb / 4080 kg
Weight - Cab, Standard Stick 8930 lb / 4050 kg
Weight - Canopy, Long Stick 8721 lb / 3955 kg
Travel System
Maximum Traction Force - High Speed 3799 lb / 16.9 kN
Maximum Traction Force - Low Speed 6969 lb / 31 kN
Travel Speed - High 3.2 mile/h / 5.2 km/h
Travel Speed - Low 2.1 mile/h / 3.3 km/h
Gradeability - Maximum 30°
Ground Pressure - Cab 4.3 psi / 29.5 kPa
Ground Pressure - Canopy 4.1 psi / 28.1 kPa
Hydraulic System
Auxiliary Circuit - Primary (186 bar/2,734 psi) 18.5 gal/min / 70 l/min
Auxiliary Circuit - Secondary (174 bar/2,524 psi) 6.6 gal/min / 25 l/min
Digging Force - Stick - Long 4384 lb / 19.5 kN
Digging Force - Stick - Standard 4856 lb / 21.6 kN
Operating Pressure - Equipment 3553 psi / 245 bar
Operating Pressure - Swing 3132 psi / 216 bar
Operating Pressure - Travel 3553 psi / 245 bar
Pump Flow at 2,200 rpm 26.4 gal/min / 100 l/min
Digging Force - Bucket 8498 lb / 37.8 kN
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Swing System
Machine Swing Speed 10 r/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.
Blade
Width 76.8 in / 1950 mm
Height 12.8 in / 325 mm
Dig Depth 18.5 in / 470 mm
Lift Height 15.7 in / 400 mm
Service Refill Capacities
Cooling System 1.5 gal (US) / 5.5 l
Engine Oil 2.5 gal (US) / 9.5 l
Hydraulic Tank 11.2 gal (US) / 42.3 l
Fuel Tank 12.2 gal (US) / 46 l
Hydraulic System 17.2 gal (US) / 65 l
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.
Cab
Dynamic Operator Sound Pressure Level (ISO 6396:2008) 81 dB(A)
Exterior Sound Power Level - ISO 6395:2008* 96 dB(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 70 in / 1770 mm
Boom In Reach 87 in / 2220 mm
Boom Swing - Left 26 in / 670 mm
Boom Swing - Right 29 in / 735 mm
Dig Depth 135 in / 3430 mm
Maximum Blade Depth 19 in / 470 mm
Maximum Blade Height 16 in / 400 mm
Maximum Dig Height 200 in / 5070 mm
Maximum Dump Clearance 145 in / 3690 mm
Maximum Reach 220 in / 5590 mm
Maximum Reach - Ground Level 215 in / 5470 mm
O/A Shipping Height 98 in / 2500 mm
O/A Shipping Length 194 in / 4930 mm
O/A Track Width 77 in / 1950 mm
O/A Undercarriage Length 87 in / 2220 mm
Swing Bearing - Height 22 in / 565 mm
Tail Swing 38 in / 975 mm
Track Belt/Shoe Width 14 in / 350 mm
Vertical Wall 101 in / 2560 mm
Dimensions - Standard Stick
Boom Height - Shipping Position 58 in / 1480 mm
Boom In Reach 83 in / 2110 mm
Boom Swing - Left 26 in / 670 mm
Boom Swing - Right 29 in / 735 mm
Dig Depth 123 in / 3130 mm
Maximum Blade Depth 19 in / 470 mm
Maximum Blade Height 16 in / 400 mm
Maximum Dig Height 196 in / 4980 mm
Maximum Dump Clearance 141 in / 3590 mm
Maximum Reach 211 in / 5350 mm
Maximum Reach - Ground Level 206 in / 5220 mm
O/A Shipping Height 98 in / 2500 mm
O/A Shipping Length 190 in / 4820 mm
O/A Track Width 77 in / 1950 mm
O/A Undercarriage Length 87 in / 2220 mm
Swing Bearing - Height 22 in / 565 mm
Tail Swing 38 in / 975 mm
Track Belt/Shoe Width 14 in / 350 mm
Vertical Wall 95 in / 2420 mm
Lift Capacities at Ground Level - Lift Point Radius: 3000 mm (118 in)
Blade Down - Front 3462 lb / 1570 kg
Blade Down - Side 2007 lb / 910 kg
Blade Up - Front 1808 lb / 820 kg
Blade Up - Side 1808 lb / 820 kg
Lift Capacities at Ground Level - Lift Point Radius: 4500 mm (177 in)
Blade Down - Front 1896 lb / 860 kg
Blade Down - Side 1058 lb / 480 kg
Blade Up - Front 948 lb / 430 kg
Blade Up - Side 948 lb / 430 kg
Operating Specifications
Machine Overhang 0 in / 0 mm
Stick Length - Long 64 in / 1615 mm
Stick Length - Standard 52 in / 1315 mm
Undercarriage
Number of Carrier Rollers 1
Number of Track Rollers 4
Track Roller Type Center Flange

Standard 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™

Optional Equipment

  • 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
Contact Us
x

We're here to help

We'll do our best to get back to you as soon as possible.