304E2 CR
Specifications
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 Model | Cat® C2.4 Cat® C2.4 | More |
| Net Power | 40.2 HP 30.0 kW | More |
| Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 | 40.2 HP 30.0 kW | More |
| Bore | 3.4 in 87.0 mm | More |
| Displacement | 146.0 in³ 2.4 l | More |
| Stroke | 4.0 in 102.4 mm | More |
| 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. | More |
| Gross Power - ISO 14396 | 41.8 HP 31.2 kW | More |
Weights*
| Operating Weight | 8996.0 lb 4080.0 kg | More |
| Weight - Canopy, Standard Stick | 8655.0 lb 3925.0 kg | More |
| 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. | More |
| Weight - Cab, Long Stick | 8996.0 lb 4080.0 kg | More |
| Weight - Cab, Standard Stick | 8930.0 lb 4050.0 kg | More |
| Weight - Canopy, Long Stick | 8721.0 lb 3955.0 kg | More |
Travel System
| Maximum Traction Force - High Speed | 3799.0 lb 16.9 kN | More |
| Maximum Traction Force - Low Speed | 6969.0 lb 31.0 kN | More |
| Travel Speed - High | 3.2 mile/h 5.2 km/h | More |
| Travel Speed - Low | 2.1 mile/h 3.3 km/h | More |
| Gradeability - Maximum | 30° 30° | More |
| Ground Pressure - Cab | 4.3 psi 29.5 kPa | More |
| Ground Pressure - Canopy | 4.1 psi 28.1 kPa | More |
Hydraulic System
| Auxiliary Circuit - Primary (186 bar/2,734 psi) | 18.5 gal/min 70.0 l/min | More |
| Auxiliary Circuit - Secondary (174 bar/2,524 psi) | 6.6 gal/min 25.0 l/min | More |
| Digging Force - Stick - Long | 4384.0 lb 19.5 kN | More |
| Digging Force - Stick - Standard | 4856.0 lb 21.6 kN | More |
| Operating Pressure - Equipment | 3553.0 psi 245.0 bar | More |
| Operating Pressure - Swing | 3132.0 psi 216.0 bar | More |
| Operating Pressure - Travel | 3553.0 psi 245.0 bar | More |
| Pump Flow at 2,200 rpm | 26.4 gal/min 100.0 l/min | More |
| Digging Force - Bucket | 8498.0 lb 37.8 kN | More |
| Type | Load Sensing Hydraulics with Variable Displacement Piston Pump Load Sensing Hydraulics with Variable Displacement Piston Pump | More |
Swing System
| Machine Swing Speed | 10.0 r/min 10.0 r/min | More |
| Boom Swing - Left - With Stop* | 55° 55° | More |
| Boom Swing - Left - Without Stop* | 70° 70° | More |
| Boom Swing - Right | 50° 50° | More |
| Note | *Automatic swing brake, spring applied, hydraulic release. *Automatic swing brake, spring applied, hydraulic release. | More |
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. | More |
Dimensions - Long Stick
| Boom Height - Shipping Position | 70.0 in 1770.0 mm | More |
| Boom In Reach | 87.0 in 2220.0 mm | More |
| Boom Swing - Left | 26.0 in 670.0 mm | More |
| Boom Swing - Right | 29.0 in 735.0 mm | More |
| Dig Depth | 135.0 in 3430.0 mm | More |
| Maximum Blade Depth | 19.0 in 470.0 mm | More |
| Maximum Blade Height | 16.0 in 400.0 mm | More |
| Maximum Dig Height | 200.0 in 5070.0 mm | More |
| Maximum Dump Clearance | 145.0 in 3690.0 mm | More |
| Maximum Reach | 220.0 in 5590.0 mm | More |
| Maximum Reach - Ground Level | 215.0 in 5470.0 mm | More |
| O/A Shipping Height | 98.0 in 2500.0 mm | More |
| O/A Shipping Length | 194.0 in 4930.0 mm | More |
| O/A Track Width | 77.0 in 1950.0 mm | More |
| O/A Undercarriage Length | 87.0 in 2220.0 mm | More |
| Swing Bearing - Height | 22.0 in 565.0 mm | More |
| Tail Swing | 38.0 in 975.0 mm | More |
| Track Belt/Shoe Width | 14.0 in 350.0 mm | More |
| Vertical Wall | 101.0 in 2560.0 mm | More |
Dimensions - Standard Stick
| Boom Height - Shipping Position | 58.0 in 1480.0 mm | More |
| Boom In Reach | 83.0 in 2110.0 mm | More |
| Boom Swing - Left | 26.0 in 670.0 mm | More |
| Boom Swing - Right | 29.0 in 735.0 mm | More |
| Dig Depth | 123.0 in 3130.0 mm | More |
| Maximum Blade Depth | 19.0 in 470.0 mm | More |
| Maximum Blade Height | 16.0 in 400.0 mm | More |
| Maximum Dig Height | 196.0 in 4980.0 mm | More |
| Maximum Dump Clearance | 141.0 in 3590.0 mm | More |
| Maximum Reach | 211.0 in 5350.0 mm | More |
| Maximum Reach - Ground Level | 206.0 in 5220.0 mm | More |
| O/A Shipping Height | 98.0 in 2500.0 mm | More |
| O/A Shipping Length | 190.0 in 4820.0 mm | More |
| O/A Track Width | 77.0 in 1950.0 mm | More |
| O/A Undercarriage Length | 87.0 in 2220.0 mm | More |
| Swing Bearing - Height | 22.0 in 565.0 mm | More |
| Tail Swing | 38.0 in 975.0 mm | More |
| Track Belt/Shoe Width | 14.0 in 350.0 mm | More |
| Vertical Wall | 95.0 in 2420.0 mm | More |
Benefits & Features
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.
Equipment
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
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