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Excavators

304E2 CR Mini Hydraulic Excavator

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  • Engine Model
    Cat® C2.4
  • Net Power
    40.2 HP
  • Net Power
    40.2 hp
  • Engine Model
    Cat C2.4
Engine
Engine Model
Cat® C2.4
Net Power
40.2 HP
Net Power
40.2 hp
Engine Model
Cat C2.4
Rated Net Power
40.2 hp
Net Power
40.2 HP
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.
Bore
3.4 in
Stroke
4 in
Displacement
146 in3
Bore
3.4 in
Displacement
146 in³
Stroke
4 in
Gross Power
41.8 hp
Emissions
*Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards.
Emissions
*Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards.
Gross Power
41.8 HP
Weights*
Operating Weight
8996 lb
Weight
8655 lb
Weight
8655 lb
Weight
8721 lb
Weight
8930 lb
Weight
8996 lb
Note
*Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Note
*Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Weight
8996 lb
Weight
8930 lb
Weight
8721 lb
Travel System
Travel Speed
3.2 mph
Travel Speed
2.1 mph
Maximum Traction Force
3799 lb
Maximum Traction Force
6969 lb
Travel Speed
3.2 mile/h
Travel Speed
2.1 mile/h
Ground Pressure
4.1 psi
Ground Pressure
4.3 psi
Gradeability
30°
Gradeability
30°
Ground Pressure
4.3 psi
Ground Pressure
4.1 psi
Hydraulic System
Pump Flow at 2
26.4 gal/min
Auxiliary Circuit
18.5 gal/min
Auxiliary Circuit
6.6 gal/min
Operating Pressure
3553 psi
Operating Pressure
3553 psi
Operating Pressure
3132 psi
Digging Force
4856 lb
Digging Force
4384 lb
Auxiliary Circuit
18.5 gal/min
Auxiliary Circuit
6.6 gal/min
Pump Flow at 2
26.4 gal/min
Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit
6.6 gal/min
Maximum Auxiliary Circuit
17.2 gal/min
Maximum Auxiliary Circuit
3553 psi
Maximum Auxiliary Circuit
3553 psi
Digging Force
8498 lb
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force
8498 lb
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Swing System
Machine Swing Speed
10 rpm
Machine Swing Speed
10 r/min
Boom Swing
70°
Boom Swing
55°
Boom Swing
50°
Boom Swing
55°
Boom Swing
70°
Boom Swing
50°
Note
*Automatic swing brake, spring applied, hydraulic release.
Note
*Automatic swing brake, spring applied, hydraulic release.
Blade
Width
76.8 in
Width
76.8 in
Height
12.8 in
Dig Depth
18.5 in
Lift Height
15.7 in
Service Refill Capacities
Cooling System
1.5 gal
Cooling System
1.5 gal (US)
Engine Oil
2.5 gal
Engine Oil
2.5 gal (US)
Hydraulic Tank
11.2 gal
Hydraulic Tank
11.2 gal (US)
Fuel Tank
12.2 gal
Fuel Tank
12.2 gal (US)
Hydraulic System
17.2 gal
Hydraulic System
17.2 gal (US)
Dimensions - Long Stick
Dig Depth
135 in
Boom Height
70 in
Boom In Reach
87 in
Boom Swing
26 in
Boom Swing
29 in
Maximum Blade Depth
19 in
Maximum Blade Height
16 in
Maximum Dig Height
200 in
Maximum Dump Clearance
145 in
Maximum Reach
220 in
Maximum Reach
215 in
O
98 in
O
194 in
O
77 in
O
87 in
Swing Bearing
22 in
Tail Swing
38 in
Track Belt
14 in
Vertical Wall
101 in
Operating Specifications
Stick Length
52 in
Stick Length
64 in
Machine Overhang
0 in
Machine Overhang
0 in
Stick Length
64 in
Stick Length
52 in
Cab
Dynamic Operator Sound Pressure Level
81 dB(A)
Exterior Sound Power Level
96 dB(A)
Note
*European Union Directive “2000/14/EC”
Dynamic Operator Sound Pressure Level
81 dB(A)
Exterior Sound Power Level
96 dB(A)
Note
*European Union Directive “2000/14/EC”
Certification – Cab and Canopy
Roll Over Protective Structure
ISO 12117-2
Tip Over Protective Structure
ISO 12117
Top Guard
ISO 10262 (Level I)
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
Lift Capacities at Ground Level - Lift Point Radius: 3000 mm (118 in)
Blade Down
3462 lb
Blade Up
1808 lb
Blade Down
2007 lb
Blade Up
1808 lb
Lift Capacities at Ground Level - Lift Point Radius: 4500 mm (177 in)
Blade Down
1896 lb
Blade Up
948 lb
Blade Down
1058 lb
Blade Up
948 lb
Dimensions – Standard Stick
Dig Depth
123 in
Vertical Wall
95 in
Maximum Reach at Ground Level
206 in
Maximum Reach
211 in
Maximum Dig Height
196 in
Maximum Dump Clearance
141 in
Boom In Reach
83 in
Tail Swing
38 in
Maximum Blade Height
16 in
Maximum Blade Depth
19 in
Boom Height in Shipping Position
58 in
O
98 in
Swing Bearing Height
22 in
O
87 in
O
190 in
Boom Swing Right
29 in
Boom Swing Left
26 in
Track Belt
14 in
O
77 in
Dimensions – Long Stick
Dig Depth
135 in
Vertical Wall
101 in
Maximum Reach at Ground Level
215 in
Maximum Reach
220 in
Maximum Dig Height
200 in
Maximum Dump Clearance
145 in
Boom In Reach
87 in
Tail Swing
38 in
Maximum Blade Height
16 in
Maximum Blade Depth
19 in
Boom Height in Shipping Position
70 in
O
98 in
Swing Bearing Height
22 in
O
87 in
O
194 in
Boom Swing Right
29 in
Boom Swing Left
26 in
Track Belt
14 in
O
77 in
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
ISO 12117-2
Tip Over Protective Structure
ISO 12117
Top Guard
ISO 10262 (Level I)
Dimensions - Standard Stick
Boom Height
58 in
Boom In Reach
83 in
Boom Swing
26 in
Boom Swing
29 in
Dig Depth
123 in
Maximum Blade Depth
19 in
Maximum Blade Height
16 in
Maximum Dig Height
196 in
Maximum Dump Clearance
141 in
Maximum Reach
211 in
Maximum Reach
206 in
O
98 in
O
190 in
O
77 in
O
87 in
Swing Bearing
22 in
Tail Swing
38 in
Track Belt
14 in
Vertical Wall
95 in
  • 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
  • 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