Mini Excavators 304E2 CR

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Key Specs

Net Power
40.2 HP
30 kW
Operating Weight
8996 lb
4080 kg
Dig Depth
135 in
3430 mm

Overview

Big Performance in a Mini Excavator

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 Specifications for 304E2 CR

Net Power 40.2 HP 30 kW
Engine Model Cat C2.4 Cat C2.4
Note The Cat C2.4 meets U.S. EPA Tier 4 Final emission standards for North America, EU Stage V emission standards for Europe and Tier 4 Interim emission standards for all other regions. The Cat C2.4 meets U.S. EPA Tier 4 Final emission standards for North America, EU Stage V emission standards for Europe and Tier 4 Interim emission standards for all other regions.
Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 40.2 HP 30 kW
Displacement 146 in³ 2.4 l
Stroke 4 in 102.4 mm
Bore 3.4 in 87 mm
Gross Power - ISO 14396 41.8 HP 31.2 kW
Operating Weight 8996 lb 4080 kg
Weight - Canopy, Standard Stick 8655 lb 3925 kg
Weight - Canopy, Long Stick 8721 lb 3955 kg
Weight - Cab, Long Stick 8996 lb 4080 kg
Weight - Cab, Standard Stick 8930 lb 4050 kg
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
Ground Pressure - Canopy 4.1 psi 28.1 kPa
Ground Pressure - Cab 4.3 psi 29.5 kPa
Digging Force - Stick - Long 4384 lb 19.5 kN
Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down. Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Digging Force - Stick - Standard 4856 lb 21.6 kN
Operating Pressure - Travel 3553 psi 245 bar
Operating Pressure - Equipment 3553 psi 245 bar
Operating Pressure - Swing 3132 psi 216 bar
Pump Flow at 2,200 rpm 26.4 gal/min 100 l/min
Maximum Auxiliary Circuit - Secondary - Flow at Pump 6.6 gal/min 25 l/min
Maximum Auxiliary Circuit - Primary - Flow at Pump 17.2 gal/min 65 l/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump 3553 psi 24500 kPa
Maximum Auxiliary Circuit - Secondary - Pressure at Pump 3553 psi 24500 kPa
Digging Force - Bucket 8498 lb 37.8 kN
Machine Swing Speed 10 r/min 10 r/min
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
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
Dig Depth 135 in 3430 mm
Maximum Dig Height 200 in 5070 mm
Maximum Reach 220 in 5590 mm
Vertical Wall 101 in 2560 mm
O/A Shipping Height 98 in 2500 mm
Boom Swing - Right 29 in 735 mm
Maximum Blade Depth 19 in 470 mm
O/A Track Width 77 in 1950 mm
Maximum Dump Clearance 145 in 3690 mm
Swing Bearing - Height 22 in 565 mm
Boom Height - Shipping Position 70 in 1770 mm
Track Belt/Shoe Width 14 in 350 mm
O/A Shipping Length 194 in 4930 mm
Maximum Reach - Ground Level 215 in 5470 mm
O/A Undercarriage Length 87 in 2220 mm
Maximum Blade Height 16 in 400 mm
Tail Swing 38 in 975 mm
Boom Swing - Left 26 in 670 mm
Boom In Reach 87 in 2220 mm
Maximum Dig Height 196 in 4980 mm
Swing Bearing - Height 22 in 565 mm
Maximum Dump Clearance 141 in 3590 mm
Boom Swing - Left 26 in 670 mm
Boom In Reach 83 in 2110 mm
Maximum Blade Depth 19 in 470 mm
O/A Shipping Height 98 in 2500 mm
Maximum Reach 211 in 5350 mm
Vertical Wall 95 in 2420 mm
Maximum Reach - Ground Level 206 in 5220 mm
Track Belt/Shoe Width 14 in 350 mm
Maximum Blade Height 16 in 400 mm
O/A Track Width 77 in 1950 mm
Boom Height - Shipping Position 58 in 1480 mm
O/A Undercarriage Length 87 in 2220 mm
Dig Depth 123 in 3130 mm
Tail Swing 38 in 975 mm
O/A Shipping Length 190 in 4820 mm
Boom Swing - Right 29 in 735 mm
Stick Length - Long 64 in 1615 mm
Machine Overhang 0 in 0 mm
Stick Length - Standard 52 in 1315 mm
Blade Up - Side 1808 lb 820 kg
Blade Down - Side 2007 lb 910 kg
Blade Up - Front 1808 lb 820 kg
Blade Down - Front 3462 lb 1570 kg
Dynamic Operator Sound Pressure Level (ISO 6396:2008) 81 dB(A) 81 dB(A)
Exterior Sound Power Level - ISO 6395:2008* 96 dB(A) 96 dB(A)
Blade Up - Front 948 lb 430 kg
Blade Down - Side 1058 lb 480 kg
Blade Down - Front 1896 lb 860 kg
Blade Up - Side 948 lb 430 kg

304E2 CR Standard Equipment

ENGINE

  • Cat C2.4 diesel engine (meets U.S. EPA Tier 4 Final emission standards for North America, EU Stage V emission standards for Europe and 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™

304E2 CR 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

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