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304E2 CR Mini Hydraulic 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.

Engine

Net Power

40.2HP

Engine Model

Cat C2.4

Gross Power - ISO 14396

41.8HP

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.

Net Power - 2,200 rpm - ISO 9249/EEC 80/1269

40.2HP

Displacement

146in³

Stroke

4in

Bore

3.4in

Weights*

Operating Weight

8996lb

Weight - Canopy, Long Stick

8721lb

Weight - Cab, Long Stick

8996lb

Weight - Cab, Standard Stick

8930lb

Weight - Canopy, Standard Stick

8655lb

Dimensions - Long Stick

Dig Depth

135in

Maximum Dig Height

200in

Maximum Reach

220in

Vertical Wall

101in

O/A Shipping Height

98in

Boom Swing - Right

29in

Maximum Blade Depth

19in

O/A Track Width

77in

Maximum Dump Clearance

145in

Swing Bearing - Height

22in

Boom Height - Shipping Position

70in

Track Belt/Shoe Width

14in

O/A Shipping Length

194in

Maximum Reach - Ground Level

215in

O/A Undercarriage Length

87in

Maximum Blade Height

16in

Tail Swing

38in

Boom Swing - Left

26in

Boom In Reach

87in

Swing System

Machine Swing Speed

10r/min

Blade

Width

76.8in

Height

12.8in

Dig Depth

18.5in

Lift Height

15.7in

Service Refill Capacities

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)

Operating Specifications

Stick Length - Long

64in

Machine Overhang

0in

Stick Length - Standard

52in

Hydraulic System

Digging Force - Bucket

8498lb

Digging Force - Stick - Long

4384lb

Note

Flow and pressure are not combinable. Under load, as flow rises pressure goes down.

Digging Force - Stick - Standard

4856lb

Operating Pressure - Travel

3553psi

Operating Pressure - Equipment

3553psi

Operating Pressure - Swing

3132psi

Pump Flow at 2,200 rpm

26.4gal/min

Maximum Auxiliary Circuit - Secondary - Flow at Pump

6.6gal/min

Maximum Auxiliary Circuit - Primary - Flow at Pump

17.2gal/min

Maximum Auxiliary Circuit - Primary - Pressure at Pump

3553psi

Maximum Auxiliary Circuit - Secondary - Pressure at Pump

3553psi

Dimensions - Standard Stick

Maximum Dump Clearance

141in

Boom Swing - Left

26in

Boom In Reach

83in

Maximum Blade Depth

19in

O/A Shipping Height

98in

Maximum Reach

211in

Vertical Wall

95in

Maximum Reach - Ground Level

206in

Track Belt/Shoe Width

14in

Maximum Blade Height

16in

O/A Track Width

77in

Boom Height - Shipping Position

58in

O/A Undercarriage Length

87in

Dig Depth

123in

Tail Swing

38in

O/A Shipping Length

190in

Boom Swing - Right

29in

Maximum Dig Height

196in

Swing Bearing - Height

22in

Lift Capacities at Ground Level - Lift Point Radius: 3000 mm (118 in)

Blade Up - Side

1808lb

Blade Down - Side

2007lb

Blade Up - Front

1808lb

Blade Down - Front

3462lb

Cab

Dynamic Operator Sound Pressure Level (ISO 6396:2008)

81dB(A)

Exterior Sound Power Level - ISO 6395:2008*

96dB(A)

Lift Capacities at Ground Level - Lift Point Radius: 4500 mm (177 in)

Blade Up - Front

948lb

Blade Down - Side

1058lb

Blade Down - Front

1896lb

Blade Up - Side

948lb

Travel System

Ground Pressure - Canopy

4.1psi

Ground Pressure - Cab

4.3psi

Maximum Traction Force - High Speed

3799lb

Maximum Traction Force - Low Speed

6969lb

Travel Speed - High

3.2mile/h

Travel Speed - Low

2.1mile/h

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

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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