304 | Toromont Cat

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An extensive line of Cat® mini hydraulic excavators offers the performance to dig in and be productive on every job.

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Specifications

Blade

Angle Blade Height

14.2 in 360 mm
Straight Blade Height

14.2 in 360 mm
Straight Blade Width

66.9 in 1700 mm
Angle Blade Width

66.9 in 1700 mm
Angle Blade - Right

25 Degrees
Angle Blade - Left

25 Degrees

Certification - Cab and Canopy

Roll Over Protective Structure (ROPS)

ISO 12117-2:2008
Top Guard

ISO 10262:1998 (Level I)
Tip Over Protective Structure (TOPS)

ISO 12117:1997

Dimensions - Long Stick

Dig Depth

138.2 in 3510 mm
Maximum Blade Depth

18.7 in 475 mm
O/A Shipping Height

100 in 2540 mm
Maximum Dump Clearance

147.2 in 3740 mm
Stick Length

66.7 in 1695 mm
Maximum Dig Height

201.8 in 5125 mm
Maximum Reach - Ground Level

214.4 in 5445 mm
Track Width

66.9 in 1700 mm
Tail Swing with Counterweight

51.2 in 1300 mm
Swing Bearing - Height

21.9 in 557 mm
Boom Height - Shipping Position

75.2 in 1910 mm
Boom Swing - Left

20.9 in 530 mm
Maximum Reach

219.3 in 5570 mm
Boom In Reach

92.1 in 2340 mm
Boom Swing - Right

28.7 in 730 mm
Track Belt/Shoe Width

13.8 in 350 mm
Vertical Wall

99.8 in 2535 mm
Maximum Blade Height

16.5 in 420 mm
Note

*Overall Shipping Length depends on blade position during shipment.
Overall Shipping Length*

194.9 in 4950 mm
Ground Clearance

12 in 305 mm
O/A Undercarriage Length

87 in 2210 mm
Tail Swing without Counterweight

47.4 in 1205 mm

Dimensions - Standard Stick

Maximum Reach - Ground Level

204.7 in 5200 mm
Vertical Wall

94.3 in 2395 mm
Note

*Overall Shipping Length depends on blade position during shipment.
Tail Swing with Counterweight

51.2 in 1300 mm
Boom In Reach

88.8 in 2255 mm
Dig Depth

126.4 in 3210 mm
Maximum Dig Height

198.4 in 5040 mm
Maximum Blade Height

16.5 in 420 mm
Swing Bearing - Height

21.9 in 557 mm
Boom Swing - Left

20.9 in 530 mm
Stick Length

54.9 in 1395 mm
O/A Undercarriage Length

87 in 2210 mm
Track Belt/Shoe Width

13.8 in 350 mm
Boom Height - Shipping Position

63.8 in 1620 mm
Boom Swing - Right

28.7 in 730 mm
Maximum Dump Clearance

143.5 in 3645 mm
Ground Clearance

12 in 305 mm
Maximum Reach

209.8 in 5330 mm
O/A Shipping Height

100 in 2540 mm
Tail Swing without Counterweight

47.4 in 1205 mm
Maximum Blade Depth

18.7 in 475 mm
Overall Shipping Length*

194.9 in 4950 mm

Engine

Net Power

45 hp 33.6 kW
Engine Model

C1.7 Turbo
Gross Power - 2,400 rpm - SAE J1995:2014

48.4 hp 36.1 kW
Bore

3.3 in 84 mm
Emissions

Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Stroke

3.9 in 100 mm
Displacement

101 in³ 1.662 l
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC

45 hp 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.

Hydraulic System

Operating Pressure - Travel

3553 psi 245 bar
Auxiliary Circuit - Secondary - Pressure

3553 psi 245 bar
Digging Force - Stick - Long

4316 lbf 19.2 kN
Auxiliary Circuit - Secondary - Flow

7 gal/min 28 l/min
Pump Flow at 2,400 rpm

25 gal/min 96 l/min
Operating Pressure - Swing

2611 psi 180 bar
Auxiliary Circuit - Primary - Flow

21 gal/min 65 l/min
Auxiliary Circuit - Primary - Pressure

3553 psi 245 bar
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

4721 lbf 21 kN
Digging Force - Bucket

8588 lbf 38.2 kN
Operating Pressure - Equipment

3553 psi 245 bar

Service Refill Capacities

Cooling System

2.9 gal (US) 11 l
Engine Oil

1.6 gal (US) 6 l
Hydraulic System

17 gal (US) 65 l
Fuel Tank

17 gal (US) 63 l
Hydraulic Tank

14 gal (US) 52 l

Sound

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”

Sustainability

Recyclability

96%

Swing System

Boom Swing - Right

50 Degrees
Machine Swing Speed

9 r/min 9 r/min
Boom Swing - Left

78 Degrees

Travel System

Ground Pressure - Minimum Weight

4.2 psi 28.7 kPa
Maximum Traction Force - Low Speed

7329 lbf 32.6 kN
Travel Speed - Low

2.2 mile/h 3.5 km/h
Ground Pressure - Maximum Weight

4.9 psi 33.8 kPa
Travel Speed - High

3.2 mile/h 5.2 km/h
Maximum Traction Force - High Speed

4271 lbf 19 kN
Gradeability - Maximum

30 degrees

Weight Increase from Minimum Configuration

Steel Tracks

430 lb 195 kg
Counterweight

496 lb 225 kg
Angle Blade

243 lb 110 kg
Long Stick

66 lb 30 kg

Weights

Operating Weight

9867 lb 4475 kg
Minimum Operating Weight with Canopy*

8655 lb 3925 kg
Maximum Operating Weight with Canopy**

9647 lb 4375 kg
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**

9867 lb 4475 kg
Minimum Operating Weight with Cab*

8875 lb 4025 kg

Benefits

ALL DAY COMFORT

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.

EASY TO OPERATE

Controls are easy to use and the intuitive Next Generation LCD monitor provides easy to read machine information. An advanced touchscreen monitor can also be equipped as an upgrade option.

STICK STEER TRAVEL MODE

Moving around the job site is even easier with the Cat Stick Steer option. Easily switch from traditional travel controls with levers and pedals to joystick controls to move the machine and to operate the blade. The benefit of less effort and improved control is in your hands!

BIG PERFORMANCE IN A SMALL MACHINE

Strong lift and dig performance helps you get the job done faster. The reduced radius tail swing design provides exceptional stability and performance. With a maximum width of 1700 mm (67 in), the 304 can access those hard to get into areas. Dozer float allows for easy clean up. An angle blade is also an option for finished grading and easier backfilling applications.

SAFETY ON THE JOB SITE

Your safety is our top priority. The Cat mini excavator is designed to help keep you safe on the job. Courtesy work lights and a fluorescent retractable seat belt are just a couple of the safety features we’ve built into the machine.

SIMPLE SERVICE FOR LESS DOWNTIME

Maintenance is quick and easy on the Cat mini excavator. Routine check points are easy to access at ground level through the side doors.

LOWER OPERATING COSTS

Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat mini excavator was designed with reducing your operating costs in mind.

SUSTAINABILITY

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)

Equipment Info