304 Mini Excavator

Units of measurement :

Metric

Imperial

Net Power

33.6 kW

Operating Weight

4475 kg

Dig Depth

3510 mm

Availability

Purchase Rental Used

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

4 Industry First Features

Cat Exclusives in a Mini Excavator

Up to 10% Lower Total Ownership Costs

with extended service intervals, lower repair costs and easy service access

Up to 20% More Performance

in lifting, digging and multi-function capability

ALL DAY COMFORT

EASY TO OPERATE

STICK STEER TRAVEL MODE

BIG PERFORMANCE IN A SMALL MACHINE

SAFETY ON THE JOB SITE

SIMPLE SERVICE FOR LESS DOWNTIME

LOWER OPERATING COSTS

SUSTAINABILITY

Choose either a canopy (not available in some regions) or a sealed and pressurized cab which can be equipped with air conditioning, adjustable wrist rests, and a suspension seat to help keep you working comfortably all day long.

The Cat® C1.7 engine meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester) * or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
Auto Idle helps reduce unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.
Cruise control helps you maintain a constant speed as you travel across your jobsite saving fuel and reducing greenhouse gas emissions.
The Cat® Seat Belt Reminder provides audible and visual warnings to remind operators to buckle up during machine operation. The easy-to-install system is compatible with all equipment brands to help ensure operator safety.
Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
Remote Flash minimizes downtime and maintenance time while keeping your asset running with maximum efficiency. Alerts for machine updates are sent virtually from your Cat dealer and updates can be deployed without a dealer technician needing to be onsite.(if equipped)
Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency by allowing your Cat dealer to virtually test the machine while working. Once a problem is identified, a technician can fix it the first time, saving time and money.(if equipped)
Cat Grade with advanced 2D and 3D technologies combine advanced guidance with optional automated machine control helping you reach grading targets while reducing fuel burn and greenhouse gas emissions by improving efficiency, job site productivity, and accuracy. (if equipped).

*Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel. (for use of blends higher than 20% biodiesel, consult your Cat dealer)

304 Small Product Brochure (AUZ, EU, NACD).pdf Cat Mini Hydraulic Excavators Product Line Brochure (North America).pdf Cat Mini Hydraulic Excavators Product Line Brochure (Europe).pdf Options And Accessories Kit Guide for Mini Hydraulic Excavators.pdf Cat Attachments for Mini Excavators Brochure.pdf Attachment Compatibility Guide for Mini Excavators.pdf

Engine

Net Power	33.6 kW	45 hp
Engine Model	C1.7 Turbo
Gross Power - 2,400 rpm - SAE J1995:2014	36.1 kW	48.4 hp
Bore	84 mm	3.3 in
Emissions	Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Stroke	100 mm	3.9 in
Displacement	1.662 l	101 in³
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC	33.6 kW	45 hp
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.

Weights

Dimensions - Long Stick

Dig Depth	3510 mm	138.2 in
Maximum Blade Depth	475 mm	18.7 in
O/A Shipping Height	2540 mm	100 in
Maximum Dump Clearance	3740 mm	147.2 in
Stick Length	1695 mm	66.7 in
Maximum Dig Height	5125 mm	201.8 in
Maximum Reach - Ground Level	5445 mm	214.4 in
Track Width	1700 mm	66.9 in
Tail Swing with Counterweight	1300 mm	51.2 in
Swing Bearing - Height	557 mm	21.9 in
Boom Height - Shipping Position	1910 mm	75.2 in
Boom Swing - Left	530 mm	20.9 in
Maximum Reach	5570 mm	219.3 in
Boom In Reach	2340 mm	92.1 in
Boom Swing - Right	730 mm	28.7 in
Track Belt/Shoe Width	350 mm	13.8 in
Vertical Wall	2535 mm	99.8 in
Maximum Blade Height	420 mm	16.5 in
Note	*Overall Shipping Length depends on blade position during shipment.
Overall Shipping Length*	4950 mm	194.9 in
Ground Clearance	305 mm	12 in
O/A Undercarriage Length	2210 mm	87 in
Tail Swing without Counterweight	1205 mm	47.4 in

Weight Increase from Minimum Configuration

Travel System

Service Refill Capacities

Hydraulic System

Swing System

Blade

Certification - Cab and Canopy

Sound

Dimensions - Standard Stick

Sustainability

Compatible products:

Other categories of Excavadoras:

360º Interior
360º Exterior

304 Mini Excavator

Operating Weight	4475 kg	9867 lb
Minimum Operating Weight with Canopy*	3925 kg	8655 lb
Maximum Operating Weight with Canopy**	4375 kg	9647 lb
Note (2)	**Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket.
Note (1)	*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight.
Maximum Operating Weight with Cab**	4475 kg	9867 lb
Minimum Operating Weight with Cab*	4025 kg	8875 lb

Steel Tracks	195 kg	430 lb
Counterweight	225 kg	496 lb
Angle Blade	110 kg	243 lb
Long Stick	30 kg	66 lb

Ground Pressure - Minimum Weight	28.7 kPa	4.2 psi
Maximum Traction Force - Low Speed	32.6 kN	7329 lbf
Travel Speed - Low	3.5 km/h	2.2 mile/h
Ground Pressure - Maximum Weight	33.8 kPa	4.9 psi
Travel Speed - High	5.2 km/h	3.2 mile/h
Maximum Traction Force - High Speed	19 kN	4271 lbf
Gradeability - Maximum	30 degrees

Cooling System	11 l	2.9 gal (US)
Engine Oil	6 l	1.6 gal (US)
Hydraulic System	65 l	17 gal (US)
Fuel Tank	63 l	17 gal (US)
Hydraulic Tank	52 l	14 gal (US)

Operating Pressure - Travel	245 bar	3553 psi
Auxiliary Circuit - Secondary - Pressure	245 bar	3553 psi
Digging Force - Stick - Long	19.2 kN	4316 lbf
Auxiliary Circuit - Secondary - Flow	28 l/min	7 gal/min
Pump Flow at 2,400 rpm	96 l/min	25 gal/min
Operating Pressure - Swing	180 bar	2611 psi
Auxiliary Circuit - Primary - Flow	65 l/min	21 gal/min
Auxiliary Circuit - Primary - Pressure	245 bar	3553 psi
Note	Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Standard	21 kN	4721 lbf
Digging Force - Bucket	38.2 kN	8588 lbf
Operating Pressure - Equipment	245 bar	3553 psi

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

Angle Blade Height	360 mm	14.2 in
Straight Blade Height	360 mm	14.2 in
Straight Blade Width	1700 mm	66.9 in
Angle Blade Width	1700 mm	66.9 in
Angle Blade - Right	25 Degrees
Angle Blade - Left	25 Degrees

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

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

Maximum Reach - Ground Level	5200 mm	204.7 in
Vertical Wall	2395 mm	94.3 in
Note	*Overall Shipping Length depends on blade position during shipment.
Tail Swing with Counterweight	1300 mm	51.2 in
Boom In Reach	2255 mm	88.8 in
Dig Depth	3210 mm	126.4 in
Maximum Dig Height	5040 mm	198.4 in
Maximum Blade Height	420 mm	16.5 in
Swing Bearing - Height	557 mm	21.9 in
Boom Swing - Left	530 mm	20.9 in
Stick Length	1395 mm	54.9 in
O/A Undercarriage Length	2210 mm	87 in
Track Belt/Shoe Width	350 mm	13.8 in
Boom Height - Shipping Position	1620 mm	63.8 in
Boom Swing - Right	730 mm	28.7 in
Maximum Dump Clearance	3645 mm	143.5 in
Ground Clearance	305 mm	12 in
Maximum Reach	5330 mm	209.8 in
O/A Shipping Height	2540 mm	100 in
Tail Swing without Counterweight	1205 mm	47.4 in
Maximum Blade Depth	475 mm	18.7 in
Overall Shipping Length*	4950 mm	194.9 in

Detalle Productos Cat

304 Mini Excavator

4 Industry First Features

Up to 10% Lower Total Ownership Costs

Up to 20% More Performance

ALL DAY COMFORT

EASY TO OPERATE

STICK STEER TRAVEL MODE

BIG PERFORMANCE IN A SMALL MACHINE

SAFETY ON THE JOB SITE

SIMPLE SERVICE FOR LESS DOWNTIME

LOWER OPERATING COSTS

SUSTAINABILITY

Engine

Weights

Dimensions - Long Stick

Weight Increase from Minimum Configuration

Travel System

Service Refill Capacities

Hydraulic System

Swing System

Blade

Certification - Cab and Canopy

Sound

Dimensions - Standard Stick

Sustainability

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309 CR

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310 - Tier 4 / Stage V

Compatible products:

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1200 mm (47 in)

1400 mm (55 in)

305 mm (12 in)

326 mm (13 in) 8 Teeth/2 Tines

406 mm (16 in)

490 mm (19 in)

508 mm (20 in)

619 mm (24 in)

914 mm (36 in)

A23

A41

H55s

Other categories of Excavadoras:

Small Excavators

Medium Excavators

Large Excavators

Demolition Excavators

Wheel Excavators

Long Reach Excavation

Minig excavators

360º Interior

360º Exterior