
Excavators
304E2 CR Mini Hydraulic Excavator
-
Engine ModelCat® C2.4
-
Net Power40.2 HP
-
Net Power40.2 hp
-
Engine ModelCat 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
- Cab:
-
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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