304E2 CR Mini Excavator with Swing Boom
SPECS SUMMARY
| Net Power | 40.2 HP (30 kW) |
| Operating Weight | 8996 lb (4080 kg) |
| Dig Depth | 135 in (3430 mm) |
| Engine Model | Cat C2.4 |
Specifications
| Net Power | 40.2 HP (30 kW) |
| Operating Weight | 8996 lb (4080 kg) |
| Dig Depth | 135 in (3430 mm) |
| Engine Model | Cat C2.4 |
| Machine Swing Speed | 10 r/min (10 r/min) |
| Width | 76.8 in (1950 mm) |
| Height | 12.8 in (325 mm) |
| Dig Depth | 18.5 in (470 mm) |
| Lift Height | 15.7 in (400 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 l) |
| Weight - Cab, Long Stick | 8996 lb (4080 kg) |
| Swing Bearing - Height | 22 in (565 mm) |
| Boom Swing - Right | 29 in (735 mm) |
| Ground Pressure - Canopy | 4.1 psi (28.1 kPa) |
| Blade Down - Front | 3462 lb (1570 kg) |
| Tail Swing | 38 in (975 mm) |
| Boom Height - Shipping Position | 70 in (1770 mm) |
| Maximum Reach - Ground Level | 206 in (5220 mm) |
| O/A Shipping Length | 190 in (4820 mm) |
| Vertical Wall | 95 in (2420 mm) |
| Maximum Dump Clearance | 145 in (3690 mm) |
| Gross Power - ISO 14396 | 41.8 HP (31.2 kW) |
| Weight - Cab, Standard Stick | 8930 lb (4050 kg) |
| O/A Shipping Height | 98 in (2500 mm) |
| O/A Track Width | 77 in (1950 mm) |
| Maximum Blade Depth | 19 in (470 mm) |
| Maximum Reach | 211 in (5350 mm) |
| O/A Undercarriage Length | 87 in (2220 mm) |
| Boom Height - Shipping Position | 58 in (1480 mm) |
| Track Belt/Shoe Width | 14 in (350 mm) |
| Ground Pressure - Cab | 4.3 psi (29.5 kPa) |
| Boom In Reach | 87 in (2220 mm) |
| O/A Track Width | 77 in (1950 mm) |
| Stick Length - Standard | 52 in (1315 mm) |
| Blade Up - Side | 948 lb (430 kg) |
| Maximum Blade Height | 16 in (400 mm) |
| Boom Swing - Left | 26 in (670 mm) |
| Tail Swing | 38 in (975 mm) |
| Maximum Blade Depth | 19 in (470 mm) |
| Blade Down - Front | 1896 lb (860 kg) |
| Maximum Blade Height | 16 in (400 mm) |
| Blade Down - Side | 1058 lb (480 kg) |
| O/A Undercarriage Length | 87 in (2220 mm) |
| Maximum Reach - Ground Level | 215 in (5470 mm) |
| O/A Shipping Length | 194 in (4930 mm) |
| Track Belt/Shoe Width | 14 in (350 mm) |
| Dig Depth | 123 in (3130 mm) |
| Machine Overhang | 0 in (0 mm) |
| Vertical Wall | 101 in (2560 mm) |
| Exterior Sound Power Level - ISO 6395:2008* | 96 dB(A) (96 dB(A)) |
| Travel Speed - High | 3.2 mile/h (5.2 km/h) |
| Operating Pressure - Swing | 3132 psi (216 bar) |
| Operating Pressure - Equipment | 3553 psi (245 bar) |
| Operating Pressure - Travel | 3553 psi (245 bar) |
| Digging Force - Stick - Standard | 4856 lb (21.6 kN) |
| Note | Flow and pressure are not combinable. Under load, as flow rises pressure goes down. |
| Digging Force - Stick - Long | 4384 lb (19.5 kN) |
| Travel Speed - Low | 2.1 mile/h (3.3 km/h) |
| Maximum Traction Force - Low Speed | 6969 lb (31 kN) |
| Maximum Auxiliary Circuit - Secondary - Flow at Pump | 6.6 gal/min (25 l/min) |
| Maximum Traction Force - High Speed | 3799 lb (16.9 kN) |
| Bore | 3.4 in (87 mm) |
| Stroke | 4 in (102.4 mm) |
| Displacement | 146 in³ (2.4 l) |
| Weight - Canopy, Standard Stick | 8655 lb (3925 kg) |
| Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 | 40.2 HP (30 kW) |
| Note | The Cat C2.4 meets U.S. EPA Tier 4 Final emission standards for North America, EU Stage V emission standards for Europe and Tier 4 Interim emission standards for all other regions. |
| Pump Flow at 2,200 rpm | 26.4 gal/min (100 l/min) |
| Maximum Auxiliary Circuit - Primary - Flow at Pump | 17.2 gal/min (65 l/min) |
| Boom In Reach | 83 in (2110 mm) |
| Weight - Canopy, Long Stick | 8721 lb (3955 kg) |
| Blade Up - Front | 948 lb (430 kg) |
| Boom Swing - Left | 26 in (670 mm) |
| Blade Up - Front | 1808 lb (820 kg) |
| O/A Shipping Height | 98 in (2500 mm) |
| Dynamic Operator Sound Pressure Level (ISO 6396:2008) | 81 dB(A) (81 dB(A)) |
| Blade Down - Side | 2007 lb (910 kg) |
| Blade Up - Side | 1808 lb (820 kg) |
| Maximum Dump Clearance | 141 in (3590 mm) |
| Maximum Auxiliary Circuit - Primary - Pressure at Pump | 3553 psi (24500 kPa) |
| Maximum Reach | 220 in (5590 mm) |
| Digging Force - Bucket | 8498 lb (37.8 kN) |
| Maximum Dig Height | 200 in (5070 mm) |
| Stick Length - Long | 64 in (1615 mm) |
| Swing Bearing - Height | 22 in (565 mm) |
| Maximum Dig Height | 196 in (4980 mm) |
| Hydraulic System | 17.2 gal (US) (65 l) |
| Maximum Auxiliary Circuit - Secondary - Pressure at Pump | 3553 psi (24500 kPa) |
| Boom Swing - Right | 29 in (735 mm) |
Benefits and Features
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.
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.
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.
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.
Convenient service and maintenance requirements include ease of access to daily check points, 500 hour engine oil and filter change period, 50 hour grease interval on front implement, S·O·SSM oil sampling valve and overall long term durability.
All Cat Mini Excavators from 3.5 metric tons to 10 metric tons are ROPS, TOPS and Top Guard Level 1 certified and include the Cat Interlock (hydraulic lockout) System, a certified accumulator which allows for auxiliary pressure to be released, making connecting and disconnecting work tools safer and easier, and a travel alarm. All of these safety features are standard on the E2 model lineup (travel alarm optional in Europe).
Standard Equipment
- Cat C2.4 diesel engine (meets U.S. EPA Tier 4 Final emission standards for North America, EU Stage V emission standards for Europe and 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
- 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
- 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
- Dozer blade with float function
- Track, rubber belt, 350 mm (14 in) width
- Tie down eyes on track frame
- Towing eye on base frame
- 200 degree bucket rotation
- Certified lifting eye on bucket linkage (optional in Europe)
- Front shovel capable
- Thumb ready stick
- 12 volt electrical system
- 60 ampere alternator
- 650 CCA maintenance free battery
- Fuse box
- Ignition key start/stop switch
- Slow blow fuse
- Warning horn
- Boom light with time delay capability
- 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)
- Product Link™
Optional Equipment
- Engine block heater
- Quick coupler lines
- Boom lowering check valve
- Stick lowering check valve
- Secondary auxiliary hydraulic lines
- Cab:
- Air conditioning
- Heat
- High back suspension seat
- Interior light
- Interlocking front window system
- Radio
- Windshield wiper
- Power angle blade
- Track, double grouser (steel), 350 mm (14 in)
- Quick coupler: manual or hydraulic
- Thumb
- Buckets
- Full range of performance matched work tools
- Auger, hammer, ripper
- Light, cab with time delay capability
- Mirror, canopy right
- Mirror, canopy left
- Mirror, cab rear
- Battery disconnect
- Beacon socket
- Front wire mesh guard
- Rearview camera
- Vandal guard