304E2 CR

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Overview

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

Units:
Engine Model Cat® C2.4 Cat® C2.4 Less
Net Power 40.2 HP 30.0 kW Less
Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 40.2 HP 30.0 kW Less
Bore 3.4 in 87.0 mm Less
Displacement 146.0 in³ 2.4 l Less
Stroke 4.0 in 102.4 mm Less
Emissions *Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards. *Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards. Less
Gross Power - ISO 14396 41.8 HP 31.2 kW Less

Weights*

Operating Weight 8996.0 lb 4080.0 kg Less
Weight - Canopy, Standard Stick 8655.0 lb 3925.0 kg Less
Note *Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines. *Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines. Less
Weight - Cab, Long Stick 8996.0 lb 4080.0 kg Less
Weight - Cab, Standard Stick 8930.0 lb 4050.0 kg Less
Weight - Canopy, Long Stick 8721.0 lb 3955.0 kg Less

Travel System

Maximum Traction Force - High Speed 3799.0 lb 16.9 kN Less
Maximum Traction Force - Low Speed 6969.0 lb 31.0 kN Less
Travel Speed - High 3.2 mile/h 5.2 km/h Less
Travel Speed - Low 2.1 mile/h 3.3 km/h Less
Gradeability - Maximum 30° 30° Less
Ground Pressure - Cab 4.3 psi 29.5 kPa Less
Ground Pressure - Canopy 4.1 psi 28.1 kPa Less

Hydraulic System

Auxiliary Circuit - Primary (186 bar/2,734 psi) 18.5 gal/min 70.0 l/min Less
Auxiliary Circuit - Secondary (174 bar/2,524 psi) 6.6 gal/min 25.0 l/min Less
Digging Force - Stick - Long 4384.0 lb 19.5 kN Less
Digging Force - Stick - Standard 4856.0 lb 21.6 kN Less
Operating Pressure - Equipment 3553.0 psi 245.0 bar Less
Operating Pressure - Swing 3132.0 psi 216.0 bar Less
Operating Pressure - Travel 3553.0 psi 245.0 bar Less
Pump Flow at 2,200 rpm 26.4 gal/min 100.0 l/min Less
Digging Force - Bucket 8498.0 lb 37.8 kN Less
Type Load Sensing Hydraulics with Variable Displacement Piston Pump Load Sensing Hydraulics with Variable Displacement Piston Pump Less

Swing System

Machine Swing Speed 10.0 r/min 10.0 r/min Less
Boom Swing - Left - With Stop* 55° 55° Less
Boom Swing - Left - Without Stop* 70° 70° Less
Boom Swing - Right 50° 50° Less
Note *Automatic swing brake, spring applied, hydraulic release. *Automatic swing brake, spring applied, hydraulic release. Less

Blade

Width 76.8 in 1950.0 mm Less
Height 12.8 in 325.0 mm Less
Dig Depth 18.5 in 470.0 mm Less
Lift Height 15.7 in 400.0 mm Less

Service Refill Capacities

Cooling System 1.5 gal (US) 5.5 l Less
Engine Oil 2.5 gal (US) 9.5 l Less
Hydraulic Tank 11.2 gal (US) 42.3 l Less
Fuel Tank 12.2 gal (US) 46.0 l Less
Hydraulic System 17.2 gal (US) 65.0 l Less

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. 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. Less

Cab

Dynamic Operator Sound Pressure Level (ISO 6396:2008) 81.0 dB(A) 81.0 dB(A) Less
Exterior Sound Power Level - ISO 6395:2008* 96.0 dB(A) 96.0 dB(A) Less
Note *European Union Directive “2000/14/EC” *European Union Directive “2000/14/EC” Less

Certification - Cab and Canopy

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

Dimensions - Long Stick

Boom Height - Shipping Position 70.0 in 1770.0 mm Less
Boom In Reach 87.0 in 2220.0 mm Less
Boom Swing - Left 26.0 in 670.0 mm Less
Boom Swing - Right 29.0 in 735.0 mm Less
Dig Depth 135.0 in 3430.0 mm Less
Maximum Blade Depth 19.0 in 470.0 mm Less
Maximum Blade Height 16.0 in 400.0 mm Less
Maximum Dig Height 200.0 in 5070.0 mm Less
Maximum Dump Clearance 145.0 in 3690.0 mm Less
Maximum Reach 220.0 in 5590.0 mm Less
Maximum Reach - Ground Level 215.0 in 5470.0 mm Less
O/A Shipping Height 98.0 in 2500.0 mm Less
O/A Shipping Length 194.0 in 4930.0 mm Less
O/A Track Width 77.0 in 1950.0 mm Less
O/A Undercarriage Length 87.0 in 2220.0 mm Less
Swing Bearing - Height 22.0 in 565.0 mm Less
Tail Swing 38.0 in 975.0 mm Less
Track Belt/Shoe Width 14.0 in 350.0 mm Less
Vertical Wall 101.0 in 2560.0 mm Less

Dimensions - Standard Stick

Boom Height - Shipping Position 58.0 in 1480.0 mm Less
Boom In Reach 83.0 in 2110.0 mm Less
Boom Swing - Left 26.0 in 670.0 mm Less
Boom Swing - Right 29.0 in 735.0 mm Less
Dig Depth 123.0 in 3130.0 mm Less
Maximum Blade Depth 19.0 in 470.0 mm Less
Maximum Blade Height 16.0 in 400.0 mm Less
Maximum Dig Height 196.0 in 4980.0 mm Less
Maximum Dump Clearance 141.0 in 3590.0 mm Less
Maximum Reach 211.0 in 5350.0 mm Less
Maximum Reach - Ground Level 206.0 in 5220.0 mm Less
O/A Shipping Height 98.0 in 2500.0 mm Less
O/A Shipping Length 190.0 in 4820.0 mm Less
O/A Track Width 77.0 in 1950.0 mm Less
O/A Undercarriage Length 87.0 in 2220.0 mm Less
Swing Bearing - Height 22.0 in 565.0 mm Less
Tail Swing 38.0 in 975.0 mm Less
Track Belt/Shoe Width 14.0 in 350.0 mm Less
Vertical Wall 95.0 in 2420.0 mm Less

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

Blade Down - Front 3462.0 lb 1570.0 kg Less
Blade Down - Side 2007.0 lb 910.0 kg Less
Blade Up - Front 1808.0 lb 820.0 kg Less
Blade Up - Side 1808.0 lb 820.0 kg Less

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

Blade Down - Front 1896.0 lb 860.0 kg Less
Blade Down - Side 1058.0 lb 480.0 kg Less
Blade Up - Front 948.0 lb 430.0 kg Less
Blade Up - Side 948.0 lb 430.0 kg Less

Operating Specifications

Machine Overhang 0.0 in 0.0 mm Less
Stick Length - Long 64.0 in 1615.0 mm Less
Stick Length - Standard 52.0 in 1315.0 mm Less

Undercarriage

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