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
Net Power |
40.2 HP |
Engine Model |
Cat C2.4 |
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. |
Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 |
40.2 HP |
Displacement |
2.4 l |
Stroke |
102.4 mm |
Bore |
87 mm |
Gross Power - ISO 14396 |
41.8 HP |
Weights*
Operating Weight |
4080 kg |
Weight - Canopy, Standard Stick |
3925 kg |
Weight - Canopy, Long Stick |
3955 kg |
Weight - Cab, Long Stick |
4080 kg |
Weight - Cab, Standard Stick |
4050 kg |
Travel System
Maximum Traction Force - High Speed |
16.9 kN |
Maximum Traction Force - Low Speed |
31 kN |
Travel Speed - High |
5.2 km/h |
Travel Speed - Low |
3.3 km/h |
Ground Pressure - Canopy |
28.1 kPa |
Ground Pressure - Cab |
29.5 kPa |
Hydraulic System
Digging Force - Stick - Long |
19.5 kN |
Note |
Flow and pressure are not combinable. Under load, as flow rises pressure goes down. |
Digging Force - Stick - Standard |
21.6 kN |
Operating Pressure - Travel |
245 bar |
Operating Pressure - Equipment |
245 bar |
Operating Pressure - Swing |
216 bar |
Pump Flow at 2,200 rpm |
100 l/min |
Maximum Auxiliary Circuit - Secondary - Flow at Pump |
25 l/min |
Maximum Auxiliary Circuit - Primary - Flow at Pump |
65 l/min |
Maximum Auxiliary Circuit - Primary - Pressure at Pump |
24500 kPa |
Maximum Auxiliary Circuit - Secondary - Pressure at Pump |
24500 kPa |
Digging Force - Bucket |
37.8 kN |
Swing System
Machine Swing Speed |
10 r/min |
Blade
Width |
1950 mm |
Height |
325 mm |
Dig Depth |
470 mm |
Lift Height |
400 mm |
Service Refill Capacities
Cooling System |
5.5 l |
Engine Oil |
9.5 l |
Hydraulic Tank |
42.3 l |
Fuel Tank |
46 l |
Hydraulic System |
65 l |
Dimensions - Long Stick
Dig Depth |
3430 mm |
Maximum Dig Height |
5070 mm |
Maximum Reach |
5590 mm |
Vertical Wall |
2560 mm |
O/A Shipping Height |
2500 mm |
Boom Swing - Right |
735 mm |
Maximum Blade Depth |
470 mm |
O/A Track Width |
1950 mm |
Maximum Dump Clearance |
3690 mm |
Swing Bearing - Height |
565 mm |
Boom Height - Shipping Position |
1770 mm |
Track Belt/Shoe Width |
350 mm |
O/A Shipping Length |
4930 mm |
Maximum Reach - Ground Level |
5470 mm |
O/A Undercarriage Length |
2220 mm |
Maximum Blade Height |
400 mm |
Tail Swing |
975 mm |
Boom Swing - Left |
670 mm |
Boom In Reach |
2220 mm |
Dimensions - Standard Stick
Maximum Dig Height |
4980 mm |
Swing Bearing - Height |
565 mm |
Maximum Dump Clearance |
3590 mm |
Boom Swing - Left |
670 mm |
Boom In Reach |
2110 mm |
Maximum Blade Depth |
470 mm |
O/A Shipping Height |
2500 mm |
Maximum Reach |
5350 mm |
Vertical Wall |
2420 mm |
Maximum Reach - Ground Level |
5220 mm |
Track Belt/Shoe Width |
350 mm |
Maximum Blade Height |
400 mm |
O/A Track Width |
1950 mm |
Boom Height - Shipping Position |
1480 mm |
O/A Undercarriage Length |
2220 mm |
Dig Depth |
3130 mm |
Tail Swing |
975 mm |
O/A Shipping Length |
4820 mm |
Boom Swing - Right |
735 mm |
Operating Specifications
Stick Length - Long |
1615 mm |
Machine Overhang |
0 mm |
Stick Length - Standard |
1315 mm |
Lift Capacities at Ground Level - Lift Point Radius: 3000 mm (118 in)
Blade Up - Side |
820 kg |
Blade Down - Side |
910 kg |
Blade Up - Front |
820 kg |
Blade Down - Front |
1570 kg |
Cab
Dynamic Operator Sound Pressure Level (ISO 6396:2008) |
81 dB(A) |
Exterior Sound Power Level - ISO 6395:2008* |
96 dB(A) |
Lift Capacities at Ground Level - Lift Point Radius: 4500 mm (177 in)
Blade Up - Front |
430 kg |
Blade Down - Side |
480 kg |
Blade Down - Front |
860 kg |
Blade Up - Side |
430 kg |
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.
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<ul><li>Multiple languages</li></ul>
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)
ENGINE
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
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 systemMultiple 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 dquo;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™
ENGINE
Engine block heater
HYDRAULIC SYSTEM
Quick coupler lines
Boom lowering check valve
Stick lowering check valve
Secondary auxiliary hydraulic lines
OPERATOR ENVIRONMENT
Cab:<ul><li>Air conditioning</li><li>Heat</li><li>High back suspension seat</li><li>Interior light</li><li>Interlocking front window system</li><li>Radio</li><li>Windshield
Cab:- Air conditioning
- Heat
- High back suspension seat
- Interior light
- Interlocking front window system
- Radio
- Windshield
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<ul><li>Auger, hammer, ripper</li></ul>
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
TECHNOLOGY
Product Link™
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
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
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