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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

  • Engine Model Cat® C2.4 Cat® C2.4
  • Net Power 40.2 HP 30.0 kW
  • Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 40.2 HP 30.0 kW
  • Bore 3.4 in 87.0 mm
  • Displacement 146.0 in³ 2.4 l
  • Stroke 4.0 in 102.4 mm
  • 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.
  • Gross Power - ISO 14396 41.8 HP 31.2 kW

Weights*

  • Operating Weight 8996.0 lb 4080.0 kg
  • Weight - Canopy, Standard Stick 8655.0 lb 3925.0 kg
  • 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.
  • Weight - Cab, Long Stick 8996.0 lb 4080.0 kg
  • Weight - Cab, Standard Stick 8930.0 lb 4050.0 kg
  • Weight - Canopy, Long Stick 8721.0 lb 3955.0 kg

Travel System

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

Hydraulic System

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

Swing System

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

Blade

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

Service Refill Capacities

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

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.

Cab

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

Certification - Cab and Canopy

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

Dimensions - Long Stick

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

Dimensions - Standard Stick

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

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

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

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

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

Operating Specifications

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

Undercarriage

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