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304 Mini Excavator

The Cat® 304 Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.

Operating Weight 4475 kg
Maximum Operating Weight with Cab** 4475 kg
Maximum Operating Weight with Canopy** 4375 kg
Minimum Operating Weight with Cab* 4025 kg
Minimum Operating Weight with Canopy* 3925 kg
Note (1) *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight.
Note (2) **Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket.

Dig Depth 3510 mm
Boom Height - Shipping Position 1910 mm
Boom In Reach 2340 mm
Boom Swing - Left 530 mm
Boom Swing - Right 730 mm
Ground Clearance 305 mm
Maximum Blade Depth 475 mm
Maximum Blade Height 420 mm
Maximum Dig Height 5125 mm
Maximum Dump Clearance 3740 mm
Maximum Reach 5570 mm
Maximum Reach - Ground Level 5445 mm
Note *Overall Shipping Length depends on blade position during shipment.
O/A Shipping Height 2540 mm
O/A Undercarriage Length 2210 mm
Overall Shipping Length* 4950 mm
Stick Length 1695 mm
Swing Bearing - Height 557 mm
Tail Swing with Counterweight 1300 mm
Tail Swing without Counterweight 1205 mm
Track Belt/Shoe Width 350 mm
Track Width 1700 mm
Vertical Wall 2535 mm

Net Power 33.6 kW
Engine Model C1.7 Turbo
Bore 84 mm
Stroke 100 mm
Displacement 1.662 l
Emissions Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Gross Power - 2,400 rpm - SAE J1995:2014 36.1 kW
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC 33.6 kW
Note Net power advertised is the power available at the flywheel when the engine is at rated speed and rated power when the engine is installed with the factory configured fan, air intake system, exhaust system, and alternator with a minimum alternator load.

Fuel Tank 63 l
Cooling System 11 l
Engine Oil 6 l
Hydraulic System 65 l
Hydraulic Tank 52 l

Angle Blade - Left 25 Degrees
Angle Blade - Right 25 Degrees
Angle Blade Height 360 mm
Angle Blade Width 1700 mm
Straight Blade Height 360 mm
Straight Blade Width 1700 mm

Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Tip Over Protective Structure (TOPS) ISO 12117:1997
Top Guard ISO 10262:1998 (Level I)

Boom Height - Shipping Position 1620 mm
Boom In Reach 2255 mm
Boom Swing - Left 530 mm
Boom Swing - Right 730 mm
Dig Depth 3210 mm
Ground Clearance 305 mm
Maximum Blade Depth 475 mm
Maximum Blade Height 420 mm
Maximum Dig Height 5040 mm
Maximum Dump Clearance 3645 mm
Maximum Reach 5330 mm
Maximum Reach - Ground Level 5200 mm
Note *Overall Shipping Length depends on blade position during shipment.
O/A Shipping Height 2540 mm
O/A Undercarriage Length 2210 mm
Overall Shipping Length* 4950 mm
Stick Length 1395 mm
Swing Bearing - Height 557 mm
Tail Swing with Counterweight 1300 mm
Tail Swing without Counterweight 1205 mm
Track Belt/Shoe Width 350 mm
Vertical Wall 2395 mm

Auxiliary Circuit - Primary - Flow 65 l/min
Auxiliary Circuit - Primary - Pressure 245 bar
Auxiliary Circuit - Secondary - Flow 28 l/min
Auxiliary Circuit - Secondary - Pressure 245 bar
Digging Force - Bucket 38.2 kN
Digging Force - Stick - Long 19.2 kN
Digging Force - Stick - Standard 21 kN
Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Operating Pressure - Equipment 245 bar
Operating Pressure - Swing 180 bar
Operating Pressure - Travel 245 bar
Pump Flow at 2,400 rpm 96 l/min
Type Load Sensing Hydraulics with Variable Displacement Piston Pump

Average Exterior Sound Pressure (ISO 6395:2008) 97 dB(A)
Note European Union Directive “2000/14/EC”
Operator Sound Pressure (ISO 6396:2008) 76 dB(A)

Boom Swing - Left 78 Degrees
Boom Swing - Right 50 Degrees
Machine Swing Speed 9 r/min

Gradeability - Maximum 30 degrees
Ground Pressure - Maximum Weight 33.8 kPa
Ground Pressure - Minimum Weight 28.7 kPa
Maximum Traction Force - High Speed 19 kN
Maximum Traction Force - Low Speed 32.6 kN
Travel Speed - High 5.2 km/h
Travel Speed - Low 3.5 km/h

Angle Blade 110 kg
Counterweight 225 kg
Long Stick 30 kg
Steel Tracks 195 kg

Recyclability 96%

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