304E2 CR

Specifications
Equipment
Related Products

Engine
Engine Model	Cat® C2.4
Net Power	40.2 HP / 30 kW
Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/1269	40.2 HP / 30 kW
Bore	3.4 in / 87 mm
Displacement	146 in³ / 2.4 l
Stroke	4 in / 102.4 mm
Emissions	*Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards.
Gross Power - ISO 14396	41.8 HP / 31.2 kW

Weights*
Operating Weight	8996 lb / 4080 kg
Weight - Canopy, Standard Stick	8655 lb / 3925 kg
Note	*Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Weight - Cab, Long Stick	8996 lb / 4080 kg
Weight - Cab, Standard Stick	8930 lb / 4050 kg
Weight - Canopy, Long Stick	8721 lb / 3955 kg

Travel System
Maximum Traction Force - High Speed	3799 lb / 16.9 kN
Maximum Traction Force - Low Speed	6969 lb / 31 kN
Travel Speed - High	3.2 mile/h / 5.2 km/h
Travel Speed - Low	2.1 mile/h / 3.3 km/h
Gradeability - Maximum	30°
Ground Pressure - Cab	4.3 psi / 29.5 kPa
Ground Pressure - Canopy	4.1 psi / 28.1 kPa

Hydraulic System
Auxiliary Circuit - Primary (186 bar/2,734 psi)	18.5 gal/min / 70 l/min
Auxiliary Circuit - Secondary (174 bar/2,524 psi)	6.6 gal/min / 25 l/min
Digging Force - Stick - Long	4384 lb / 19.5 kN
Digging Force - Stick - Standard	4856 lb / 21.6 kN
Operating Pressure - Equipment	3553 psi / 245 bar
Operating Pressure - Swing	3132 psi / 216 bar
Operating Pressure - Travel	3553 psi / 245 bar
Pump Flow at 2,200 rpm	26.4 gal/min / 100 l/min
Digging Force - Bucket	8498 lb / 37.8 kN
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump

Swing System
Machine Swing Speed	10 r/min
Boom Swing - Left - With Stop*	55°
Boom Swing - Left - Without Stop*	70°
Boom Swing - Right	50°
Note	*Automatic swing brake, spring applied, hydraulic release.

Blade
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

Service Refill Capacities
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
Hydraulic System	17.2 gal (US) / 65 l

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.

Cab
Dynamic Operator Sound Pressure Level (ISO 6396:2008)	81 dB(A)
Exterior Sound Power Level - ISO 6395:2008*	96 dB(A)
Note	*European Union Directive “2000/14/EC”

Certification - Cab and Canopy
Roll Over Protective Structure (ROPS)	ISO 12117-2
Tip Over Protective Structure (TOPS)	ISO 12117
Top Guard	ISO 10262 (Level I)

Dimensions - Long Stick
Boom Height - Shipping Position	70 in / 1770 mm
Boom In Reach	87 in / 2220 mm
Boom Swing - Left	26 in / 670 mm
Boom Swing - Right	29 in / 735 mm
Dig Depth	135 in / 3430 mm
Maximum Blade Depth	19 in / 470 mm
Maximum Blade Height	16 in / 400 mm
Maximum Dig Height	200 in / 5070 mm
Maximum Dump Clearance	145 in / 3690 mm
Maximum Reach	220 in / 5590 mm
Maximum Reach - Ground Level	215 in / 5470 mm
O/A Shipping Height	98 in / 2500 mm
O/A Shipping Length	194 in / 4930 mm
O/A Track Width	77 in / 1950 mm
O/A Undercarriage Length	87 in / 2220 mm
Swing Bearing - Height	22 in / 565 mm
Tail Swing	38 in / 975 mm
Track Belt/Shoe Width	14 in / 350 mm
Vertical Wall	101 in / 2560 mm

Dimensions - Standard Stick
Boom Height - Shipping Position	58 in / 1480 mm
Boom In Reach	83 in / 2110 mm
Boom Swing - Left	26 in / 670 mm
Boom Swing - Right	29 in / 735 mm
Dig Depth	123 in / 3130 mm
Maximum Blade Depth	19 in / 470 mm
Maximum Blade Height	16 in / 400 mm
Maximum Dig Height	196 in / 4980 mm
Maximum Dump Clearance	141 in / 3590 mm
Maximum Reach	211 in / 5350 mm
Maximum Reach - Ground Level	206 in / 5220 mm
O/A Shipping Height	98 in / 2500 mm
O/A Shipping Length	190 in / 4820 mm
O/A Track Width	77 in / 1950 mm
O/A Undercarriage Length	87 in / 2220 mm
Swing Bearing - Height	22 in / 565 mm
Tail Swing	38 in / 975 mm
Track Belt/Shoe Width	14 in / 350 mm
Vertical Wall	95 in / 2420 mm

Lift Capacities at Ground Level - Lift Point Radius: 3000 mm (118 in)
Blade Down - Front	3462 lb / 1570 kg
Blade Down - Side	2007 lb / 910 kg
Blade Up - Front	1808 lb / 820 kg
Blade Up - Side	1808 lb / 820 kg

Lift Capacities at Ground Level - Lift Point Radius: 4500 mm (177 in)
Blade Down - Front	1896 lb / 860 kg
Blade Down - Side	1058 lb / 480 kg
Blade Up - Front	948 lb / 430 kg
Blade Up - Side	948 lb / 430 kg

Operating Specifications
Machine Overhang	0 in / 0 mm
Stick Length - Long	64 in / 1615 mm
Stick Length - Standard	52 in / 1315 mm

Undercarriage
Number of Carrier Rollers	1
Number of Track Rollers	4
Track Roller Type	Center Flange

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™

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

Heavy Duty Buckets - Mini Excavator

High strength buckets designed for maximum performance and value over a broad range of applications.

Model	Width	Rated Capacity	Weight
305 mm (12 in)	12 in / 305 mm	1.7 ft³ / 48.1 l	143.3 lb / 65 kg
406 mm (16 in)	16 in / 406 mm	2.5 ft³ / 70.8 l	163.1 lb / 74 kg
457 mm (18 in)	18 in / 457 mm	2.9 ft³ / 82.1 l	180.8 lb / 82 kg
508 mm (20 in)	20 in / 508 mm	3.3 ft³ / 93.4 l	191.8 lb / 87 kg
619 mm (24 in)	24.4 in / 619 mm	4.2 ft³ / 118.9 l	216.1 lb / 98 kg
762 mm (30 in)	30 in / 762 mm	5.6 ft³ / 158.6 l	257.9 lb / 117 kg
914 mm (36 in)	36 in / 914 mm	7.1 ft³ / 199.9 l	293.2 lb / 133 kg

Augers

Designed to drill holes for footings, fencing, signs and trees.

Model	Drive Shaft Torque at Maximum Pressure	Drive Method	Mounting Bracket Design
A14B	1700 lb/ft / 2304 N·m	Gerotor Motor - Direct Drive	Mini Hydraulic Excavator
A19B	3040 lb/ft / 4120 N·m	Gerotor Motor - Single Planetary Reduction	Mini Hydraulic Excavator

Ditch Cleaning Buckets - Mini Excavator

Used in ditch cleaning, sloping, grading and other finishing work.

Model	Width	Rated Capacity	Weight
1000 mm (40 in)	39.4 in / 1000 mm	4.8 ft³ / 135.9 l	240.1 lb / 108.9 kg
1200 mm (47 in)	47.2 in / 1200 mm	5.9 ft³ / 167.1 l	235.7 lb / 106.9 kg
1400 mm (55 in)	55.1 in / 1400 mm	6.96 ft³ / 197.1 l	259.3 lb / 117.6 kg

Grading Buckets - Mini Excavator

For cleaning ditches, sloping, grading and other finishing work.

Model	Width	Rated Capacity	Weight
1200 mm (47 in)	47.2 in / 1200 mm	8.19 ft³ / 231.9 l	380.9 lb / 172.8 kg

Tilting Ditch Cleaning Buckets - Mini Excavator

Used in ditch cleaning, sloping, grading and other finishing work.

Model	Width	Rated Capacity	Weight
1200 mm (47 in)	47.2 in / 1200 mm	5.6 ft³ / 158.6 m³	357.8 lb / 162.3 kg

Rippers

For land clearing or site preparation in rock, quarry work and similar high-impact digging applications. Combine with a coupler for Rip & Load productivity.

Model	Shank Length	Weight	Overall Length
490 mm (19 in)	19 in / 490 mm	99 lb / 45 kg	26 in / 659 mm

Heavy Equipment