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 Net Power 40.2 HP Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 40.2 HP Displacement 146.0 in³ Bore 3.4 in Stroke 4.0 in Gross Power - ISO 14396 41.8 HP Emissions Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards. WEIGHTS Weight - Canopy, Standard Stick 8655.0 lb Operating Weight 8996.0 lb Weight - Cab, Long Stick 8996.0 lb Weight - Canopy, Long Stick 8721.0 lb Note Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines. Weight - Cab, Standard Stick 8930.0 lb TRAVEL SYSTEM Travel Speed - High 3.2 mile/h Maximum Traction Force - Low Speed 6969.0 lb Maximum Traction Force - High Speed 3799.0 lb Travel Speed - Low 2.1 mile/h Ground Pressure - Cab 4.3 psi Ground Pressure - Canopy 4.1 psi Gradeability - Maximum 30° HYDRAULIC SYSTEM Auxiliary Circuit - Secondary (174 bar/2,524 psi) 6.6 gal/min Digging Force - Stick - Long 4384.0 lb Pump Flow at 2,200 rpm 26.4 gal/min Operating Pressure - Equipment 3553.0 psi Auxiliary Circuit - Primary (186 bar/2,734 psi) 18.5 gal/min Operating Pressure - Swing 3132.0 psi Digging Force - Stick - Standard 4856.0 lb Operating Pressure - Travel 3553.0 psi Digging Force - Bucket 8498.0 lb Type Load Sensing Hydraulics with Variable Displacement Piston Pump SWING SYSTEM Machine Swing Speed 10.0 r/min Boom Swing - Right 50° Boom Swing - Left - Without Stop 70° Boom Swing - Left - With Stop 55° Note Automatic swing brake, spring applied, hydraulic release. BLADE Width 76.8 in Height 12.8 in Dig Depth 18.5 in Lift Height 15.7 in SERVICE REFILL CAPACITIES Cooling System 1.5 gal (US) Engine Oil 2.5 gal (US) Hydraulic Tank 11.2 gal (US) Fuel Tank 12.2 gal (US) Hydraulic System 17.2 gal (US) OPERATING SPECIFICATIONS Machine Overhang 0.0 in Stick Length - Standard 52.0 in Stick Length - Long 64.0 in DIMENSIONS - LONG STICK Boom In Reach 87.0 in O/A Track Width 77.0 in O/A Shipping Length 194.0 in Vertical Wall 101.0 in Dig Depth 135.0 in Maximum Dump Clearance 145.0 in Swing Bearing - Height 22.0 in Maximum Blade Height 16.0 in Maximum Blade Depth 19.0 in O/A Undercarriage Length 87.0 in Tail Swing 38.0 in O/A Shipping Height 98.0 in Maximum Reach - Ground Level 215.0 in Boom Swing - Right 29.0 in Maximum Dig Height 200.0 in Boom Height - Shipping Position 70.0 in Track Belt/Shoe Width 14.0 in Boom Swing - Left 26.0 in Maximum Reach 220.0 in DIMENSIONS - STANDARD STICK Boom Height - Shipping Position 58.0 in Boom Swing - Left 26.0 in O/A Shipping Height 98.0 in Maximum Reach 211.0 in O/A Undercarriage Length 87.0 in Tail Swing 38.0 in O/A Track Width 77.0 in O/A Shipping Length 190.0 in Dig Depth 123.0 in Vertical Wall 95.0 in Maximum Dig Height 196.0 in Boom In Reach 83.0 in Maximum Dump Clearance 141.0 in Swing Bearing - Height 22.0 in Maximum Reach - Ground Level 206.0 in Track Belt/Shoe Width 14.0 in Boom Swing - Right 29.0 in Maximum Blade Depth 19.0 in Maximum Blade Height 16.0 in LIFT CAPACITIES AT GROUND LEVEL - LIFT POINT RADIUS: 3000 MM (118 IN) Blade Down - Side 2007.0 lb Blade Up - Side 1808.0 lb Blade Down - Front 3462.0 lb Blade Up - Front 1808.0 lb LIFT CAPACITIES AT GROUND LEVEL - LIFT POINT RADIUS: 4500 MM (177 IN) Blade Up - Front 948.0 lb Blade Down - Front 1896.0 lb Blade Down - Side 1058.0 lb Blade Up - Side 948.0 lb CAB Dynamic Operator Sound Pressure Level (ISO 6396:2008) 81.0 dB(A) Note European Union Directive “2000/14/EC” Exterior Sound Power Level - ISO 6395:2008 96.0 dB(A) CERTIFICATION - CAB AND CANOPY Tip Over Protective Structure (TOPS) ISO 12117 Top Guard ISO 10262 (Level I) Roll Over Protective Structure (ROPS) ISO 12117-2 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 Carrier Rollers 1 Number of Track Rollers 4
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.
VERSALITY: 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.
GRADING BUCKETS - MINI EXCAVATOR
304E2 CR STANDARD EQUIPMENT ENGINE • Cat C2.4 diesel engine (meets U.S. EPA Tier 4 Final emission standards for North America and EU Stage IIIA/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™
304E2 CR 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
CAR MODELS: 304 E2 CR8930lbs (4050kg) COMPETITOR MODELS: KUBOTA KX 121-3S9063.1lbs (4111kg)
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