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.
| Net Power | 40.2 HP 30.0 kW |
| Engine Model | Cat® C2.4 Cat® C2.4 |
| Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 | 40.2 HP 30.0 kW |
| Displacement | 146.0 in³ 2.4 l |
| Bore | 3.4 in 87.0 mm |
| Stroke | 4.0 in 102.4 mm |
| Gross Power - ISO 14396 | 41.8 HP 31.2 kW |
| 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. |
| Operating Weight | 8996.0 lb 4080.0 kg |
| Weight - Canopy, Standard Stick | 8655.0 lb 3925.0 kg |
| Weight - Cab, Long Stick | 8996.0 lb 4080.0 kg |
| Weight - Canopy, Long Stick | 8721.0 lb 3955.0 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, Standard Stick | 8930.0 lb 4050.0 kg |
| Travel Speed - High | 3.2 mile/h 5.2 km/h |
| Maximum Traction Force - Low Speed | 6969.0 lb 31.0 kN |
| Maximum Traction Force - High Speed | 3799.0 lb 16.9 kN |
| Travel Speed - Low | 2.1 mile/h 3.3 km/h |
| Ground Pressure - Cab | 4.3 psi 29.5 kPa |
| Ground Pressure - Canopy | 4.1 psi 28.1 kPa |
| Gradeability - Maximum | 30° 30° |
| 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 |
| Pump Flow at 2,200 rpm | 26.4 gal/min 100.0 l/min |
| Operating Pressure - Equipment | 3553.0 psi 245.0 bar |
| Auxiliary Circuit - Primary (186 bar/2,734 psi) | 18.5 gal/min 70.0 l/min |
| Operating Pressure - Swing | 3132.0 psi 216.0 bar |
| Digging Force - Stick - Standard | 4856.0 lb 21.6 kN |
| Operating Pressure - Travel | 3553.0 psi 245.0 bar |
| 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 |
| Machine Swing Speed | 10.0 r/min 10.0 r/min |
| Boom Swing - Right | 50° 50° |
| Boom Swing - Left - Without Stop* | 70° 70° |
| Boom Swing - Left - With Stop* | 55° 55° |
| Note | *Automatic swing brake, spring applied, hydraulic release. *Automatic swing brake, spring applied, hydraulic release. |
| 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 |
| 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 |
| Dig Depth | 135.0 in 3430.0 mm |
| Boom In Reach | 87.0 in 2220.0 mm |
| O/A Track Width | 77.0 in 1950.0 mm |
| O/A Shipping Length | 194.0 in 4930.0 mm |
| Vertical Wall | 101.0 in 2560.0 mm |
| Maximum Dump Clearance | 145.0 in 3690.0 mm |
| Swing Bearing - Height | 22.0 in 565.0 mm |
| Maximum Blade Height | 16.0 in 400.0 mm |
| Maximum Blade Depth | 19.0 in 470.0 mm |
| O/A Undercarriage Length | 87.0 in 2220.0 mm |
| Tail Swing | 38.0 in 975.0 mm |
| O/A Shipping Height | 98.0 in 2500.0 mm |
| Maximum Reach - Ground Level | 215.0 in 5470.0 mm |
| Boom Swing - Right | 29.0 in 735.0 mm |
| Maximum Dig Height | 200.0 in 5070.0 mm |
| Boom Height - Shipping Position | 70.0 in 1770.0 mm |
| Track Belt/Shoe Width | 14.0 in 350.0 mm |
| Boom Swing - Left | 26.0 in 670.0 mm |
| Maximum Reach | 220.0 in 5590.0 mm |
| Machine Overhang | 0.0 in 0.0 mm |
| Stick Length - Standard | 52.0 in 1315.0 mm |
| Stick Length - Long | 64.0 in 1615.0 mm |
| Boom Height - Shipping Position | 58.0 in 1480.0 mm |
| Boom Swing - Left | 26.0 in 670.0 mm |
| O/A Shipping Height | 98.0 in 2500.0 mm |
| Maximum Reach | 211.0 in 5350.0 mm |
| O/A Undercarriage Length | 87.0 in 2220.0 mm |
| Tail Swing | 38.0 in 975.0 mm |
| O/A Track Width | 77.0 in 1950.0 mm |
| O/A Shipping Length | 190.0 in 4820.0 mm |
| Dig Depth | 123.0 in 3130.0 mm |
| Vertical Wall | 95.0 in 2420.0 mm |
| Maximum Dig Height | 196.0 in 4980.0 mm |
| Boom In Reach | 83.0 in 2110.0 mm |
| Maximum Dump Clearance | 141.0 in 3590.0 mm |
| Swing Bearing - Height | 22.0 in 565.0 mm |
| Maximum Reach - Ground Level | 206.0 in 5220.0 mm |
| Track Belt/Shoe Width | 14.0 in 350.0 mm |
| Boom Swing - Right | 29.0 in 735.0 mm |
| Maximum Blade Depth | 19.0 in 470.0 mm |
| Maximum Blade Height | 16.0 in 400.0 mm |
| Blade Down - Side | 2007.0 lb 910.0 kg |
| Blade Up - Side | 1808.0 lb 820.0 kg |
| Blade Down - Front | 3462.0 lb 1570.0 kg |
| Blade Up - Front | 1808.0 lb 820.0 kg |
| Blade Up - Front | 948.0 lb 430.0 kg |
| Blade Down - Front | 1896.0 lb 860.0 kg |
| Blade Down - Side | 1058.0 lb 480.0 kg |
| Blade Up - Side | 948.0 lb 430.0 kg |
| Dynamic Operator Sound Pressure Level (ISO 6396:2008) | 81.0 dB(A) 81.0 dB(A) |
| Note | *European Union Directive “2000/14/EC” *European Union Directive “2000/14/EC” |
| Exterior Sound Power Level - ISO 6395:2008* | 96.0 dB(A) 96.0 dB(A) |
| Tip Over Protective Structure (TOPS) | ISO 12117 ISO 12117 |
| Top Guard | ISO 10262 (Level I) ISO 10262 (Level I) |
| Roll Over Protective Structure (ROPS) | ISO 12117-2 ISO 12117-2 |
| 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. |
| Track Roller Type | Center Flange Center Flange |
| Number of Carrier Rollers | 1 1 |
| Number of Track Rollers | 4 4 |
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Cat® Product Link™ wirelessly connects you to your equipment giving you valuable insight into how your machine or fleet is performing. Information such as location, hours, fuel usage, productivity, idle time, and diagnostic codes are made available through online web applications so that you can make timely, fact-based decisions to maximize efficiency, improve productivity, and lower the cost of owning and operating your fleet. Available with satellite or cellular connectivity.
Cat® Product Link™ wirelessly connects you to your equipment giving you valuable insight into how your machine or fleet is performing. Information such as location, hours, fuel usage, productivity, idle time, and diagnostic codes are made available through online web applications so that you can make timely, fact-based decisions to maximize efficiency, improve productivity, and lower the cost of owning and operating your fleet. Available with satellite or cellular connectivity.
