304E2 CR Mini Hydraulic Excavator

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
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
Gross Power - ISO 14396
41.8HP
Weights*
Operating Weight
8996lb
Weight - Canopy, Standard Stick
8655lb
Weight - Canopy, Long Stick
8721lb
Weight - Cab, Long Stick
8996lb
Weight - Cab, Standard Stick
8930lb
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)
Travel System
Maximum Traction Force - High Speed
3799lb
Maximum Traction Force - Low Speed
6969lb
Travel Speed - High
3.2mile/h
Travel Speed - Low
2.1mile/h
Ground Pressure - Canopy
4.1psi
Ground Pressure - Cab
4.3psi
Hydraulic System
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
Digging Force - Bucket
8498lb
Dimensions - Standard Stick
Maximum Dig Height
196in
Swing Bearing - Height
22in
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
Operating Specifications
Stick Length - Long
64in
Machine Overhang
0in
Stick Length - Standard
52in
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

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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