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.

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Engine

Engine Model
Cat® C2.4
Net Power
40.2HP
Gross Power - ISO 14396
41.8HP
Emissions
*Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards.
Stroke
4in
Bore
3.4in
Displacement
146in³
Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/1269
40.2HP

Swing System

Machine Swing Speed
10r/min
Note
*Automatic swing brake, spring applied, hydraulic release.
Boom Swing - Right
50°
Boom Swing - Left - Without Stop*
70°
Boom Swing - Left - With Stop*
55°

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)

Hydraulic System

Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Bucket
8498lb
Digging Force - Stick - Long
4384lb
Auxiliary Circuit - Primary (186 bar/2,734 psi)
18.5gal/min
Auxiliary Circuit - Secondary (174 bar/2,524 psi)
6.6gal/min
Pump Flow at 2,200 rpm
26.4gal/min
Operating Pressure - Travel
3553psi
Operating Pressure - Swing
3132psi
Operating Pressure - Equipment
3553psi
Digging Force - Stick - Standard
4856lb

Dimensions - Standard Stick

Vertical Wall
95in
Track Belt/Shoe Width
14in
O/A Track Width
77in
Tail Swing
38in
Swing Bearing - Height
22in
O/A Undercarriage Length
87in
O/A Shipping Length
190in
Maximum Blade Height
16in
Maximum Dig Height
196in
Maximum Dump Clearance
141in
Maximum Reach
211in
Maximum Reach - Ground Level
206in
O/A Shipping Height
98in
Maximum Blade Depth
19in
Dig Depth
123in
Boom Swing - Right
29in
Boom In Reach
83in
Boom Swing - Left
26in
Boom Height - Shipping Position
58in

Dimensions - Long Stick

Maximum Dig Height
200in
Maximum Blade Height
16in
Maximum Blade Depth
19in
Boom Swing - Right
29in
Dig Depth
135in
Boom Swing - Left
26in
Boom In Reach
87in
Boom Height - Shipping Position
70in
Tail Swing
38in
Track Belt/Shoe Width
14in
Swing Bearing - Height
22in
Vertical Wall
101in
O/A Undercarriage Length
87in
O/A Track Width
77in
O/A Shipping Length
194in
O/A Shipping Height
98in
Maximum Reach - Ground Level
215in
Maximum Reach
220in
Maximum Dump Clearance
145in

Travel System

Travel Speed - Low
2.1mile/h
Travel Speed - High
3.2mile/h
Maximum Traction Force - Low Speed
6969lb
Maximum Traction Force - High Speed
3799lb
Ground Pressure - Canopy
4.1psi
Ground Pressure - Cab
4.3psi
Gradeability - Maximum
30°

Operating Specifications

Stick Length - Long
64in
Machine Overhang
0in
Stick Length - Standard
52in

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

Blade Up - Side
948lb
Blade Up - Front
948lb
Blade Down - Side
1058lb
Blade Down - Front
1896lb

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

Certification - Cab and Canopy

Top Guard
ISO 10262 (Level I)
Roll Over Protective Structure (ROPS)
ISO 12117-2
Tip Over Protective Structure (TOPS)
ISO 12117

Cab

Note
*European Union Directive “2000/14/EC”
Dynamic Operator Sound Pressure Level (ISO 6396:2008)
81dB(A)
Exterior Sound Power Level - ISO 6395:2008*
96dB(A)

Weights*

Weight - Canopy, Standard Stick
8655lb
Operating Weight
8996lb
Weight - Canopy, Long Stick
8721lb
Weight - Cab, Standard Stick
8930lb
Weight - Cab, Long Stick
8996lb
Note
*Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.

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.

Undercarriage

Track Roller Type
Center Flange
Number of Track Rollers
4
Number of Carrier Rollers
1

QUALITY

The durable hoods and frame and the compact radius design of the 304E2 let you work comfortably and confidently in confined areas. The operator environment includes a high quality suspension seat, easy to adjust armrests and 100% pilot controls which offer consistent and long-lasting controllability.

EFFICIENCY

High Definition Hydraulic System provides a load sensing and flow sharing capability leading to operational precision, efficient performance and greater controllability. Power on Demand provides optimal efficiency and performance the moment you need it. This automatic system ensures fuel efficiency through appropriate engine rating to meet all operational needs as required.

VERSATILITY

Broad range of Cat Work Tools make the Cat Mini Excavator a versatile machine able to meet the requirements of any job site. Over 200 degrees of bucket rotation provides greater material retention during truck loading and easier flat wall digging without having to reposition the machine.

PERFORMANCE

Front shovel bucket orientation provides the operator with more ways to get the job done faster. COMPASS Control Panel is a standard feature that allows the operator to easily adjust auxiliary flows to achieve the optimal work tool performance, activate auto idle or economy mode for improved fuel efficiency and utilize the security system to ensure protection of valuable assets with the simple touch of a button. The Site Reference System included in the COMPASS monitor provides output from pitch and roll sensors to aid in grading and level trenching. This impacts accuracy and productivity for job site finishing.

SERVICEABILITY

Front shovel bucket orientation provides the operator with more ways to get the job done faster. COMPASS Control Panel is a standard feature that allows the operator to easily adjust auxiliary flows to achieve the optimal work tool performance, activate auto idle or economy mode for improved fuel efficiency and utilize the security system to ensure protection of valuable assets with the simple touch of a button. The Site Reference System included in the COMPASS monitor provides output from pitch and roll sensors to aid in grading and level trenching. This impacts accuracy and productivity for job site finishing.

SAFETY

Front shovel bucket orientation provides the operator with more ways to get the job done faster. COMPASS Control Panel is a standard feature that allows the operator to easily adjust auxiliary flows to achieve the optimal work tool performance, activate auto idle or economy mode for improved fuel efficiency and utilize the security system to ensure protection of valuable assets with the simple touch of a button. The Site Reference System included in the COMPASS monitor provides output from pitch and roll sensors to aid in grading and level trenching. This impacts accuracy and productivity for job site finishing.

Standard Equipment:

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