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304 Mini Excavator

Net Power

45 HP

Operating Weight

9,867 lb

Dig Depth

138.2 in

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SPECIFICATIONS

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

FULL SPECIFICATIONS

Blade

Angle Blade - Left

25 Degrees

Angle Blade Height

14.2 in

Straight Blade Height

14.2 in

Straight Blade Width

66.9 in

Angle Blade Width

66.9 in

Angle Blade - Right

25 Degrees

Certification - Cab and Canopy

Top Guard

ISO 10262:1998 (Level I)

Roll Over Protective Structure (ROPS)

ISO 12117-2:2008

Tip Over Protective Structure (TOPS)

ISO 12117:1997

Dimensions - Long Stick

Dig Depth

138.2 in

O/A Undercarriage Length

87 in

Boom In Reach

92.1 in

Swing Bearing - Height

21.9 in

Maximum Blade Height

16.5 in

Track Width

66.9 in

Boom Swing - Left

20.9 in

Track Belt/Shoe Width

13.8 in

Overall Shipping Length*

194.9 in

Maximum Blade Depth

18.7 in

Maximum Dump Clearance

147.2 in

Maximum Dig Height

201.8 in

O/A Shipping Height

100 in

Stick Length

66.7 in

Maximum Reach - Ground Level

214.4 in

Tail Swing with Counterweight

51.2 in

Boom Height - Shipping Position

75.2 in

Maximum Reach

219.3 in

Boom Swing - Right

28.7 in

Vertical Wall

99.8 in

Note

*Overall Shipping Length depends on blade position during shipment.

Ground Clearance

12 in

Tail Swing without Counterweight

47.4 in

Dimensions - Standard Stick

Tail Swing with Counterweight

51.2 in

Maximum Dump Clearance

143.5 in

Maximum Blade Height

16.5 in

O/A Undercarriage Length

87 in

Tail Swing without Counterweight

47.4 in

Vertical Wall

94.3 in

Dig Depth

126.4 in

Boom Swing - Left

20.9 in

Boom Height - Shipping Position

63.8 in

Maximum Reach

209.8 in

Overall Shipping Length*

194.9 in

Maximum Reach - Ground Level

204.7 in

Note

*Overall Shipping Length depends on blade position during shipment.

Boom In Reach

88.8 in

Maximum Dig Height

198.4 in

Swing Bearing - Height

21.9 in

Stick Length

54.9 in

Track Belt/Shoe Width

13.8 in

Boom Swing - Right

28.7 in

Ground Clearance

12 in

O/A Shipping Height

100 in

Maximum Blade Depth

18.7 in

Engine

Net Power

45 HP

Engine Model

C1.7 Turbo

Emissions

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

Gross Power - 2,400 rpm - SAE J1995:2014

48.4 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.

Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC

45 HP

Displacement

101 in³

Stroke

3.9 in

Bore

3.3 in

Hydraulic System

Operating Pressure - Travel

3,553 psi

Auxiliary Circuit - Secondary - Pressure

3,553 psi

Digging Force - Stick - Long

4,316 lbf

Auxiliary Circuit - Secondary - Flow

7 gal/min

Pump Flow at 2,400 rpm

25 gal/min

Operating Pressure - Swing

2,611 psi

Auxiliary Circuit - Primary - Flow

21 gal/min

Auxiliary Circuit - Primary - Pressure

3,553 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

4,721 lbf

Digging Force - Bucket

8,588 lbf

Operating Pressure - Equipment

3,553 psi

Service Refill Capacities

Cooling System

2.9 gal (US)

Engine Oil

1.6 gal (US)

Hydraulic System

17 gal (US)

Fuel Tank

17 gal (US)

Hydraulic Tank

14 gal (US)

Sound

Note

European Union Directive “2000/14/EC”

Average Exterior Sound Pressure (ISO 6395:2008)

97 dB(A)

Operator Sound Pressure (ISO 6396:2008)

76 dB(A)

Sustainability

Recyclability

96%

Swing System

Boom Swing - Right

50 Degrees

Machine Swing Speed

9 r/min

Boom Swing - Left

78 Degrees

Travel System

Ground Pressure - Minimum Weight

4.2 psi

Maximum Traction Force - Low Speed

7,329 lbf

Travel Speed - Low

2.2 mile/h

Ground Pressure - Maximum Weight

4.9 psi

Travel Speed - High

3.2 mile/h

Maximum Traction Force - High Speed

4,271 lbf

Gradeability - Maximum

30 degrees

Weight Increase from Minimum Configuration

Steel Tracks

430 lb

Counterweight

496 lb

Angle Blade

243 lb

Long Stick

66 lb

Weights

Operating Weight

9,867 lb

Maximum Operating Weight with Canopy**

9,647 lb

Minimum Operating Weight with Canopy*

8,655 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**

9,867 lb

Minimum Operating Weight with Cab*

8,875 lb

STANDARD EQUIPMENT

ENGINE
- Cat® C1.7 Turbo Engine (U.S. EPA Tier 4 Final/EU Stage V)
- Automatic Engine Idle
- Automatic Engine Shutdown
- Automatic Two Speed Travel
- Fuel Water Separator
- Power on Demand (not available in all regions)
- Variable Displacement Piston Pump
- Load Sensing/Flow Sharing Hydraulics
HYDRAULICS
- Smart Tech Electronic Pump
- Accumulator
- Automatic Swing Brake
- Auxiliary Hydraulic Lines
- One and Two Way Auxiliary Flow
- Continuous Auxiliary Flow
- Auxiliary Line Quick Disconnects
OPERATOR ENVIRONMENT
- Canopy or Cab (Canopy not available in some regions)
- Top Guard ISO 10262:1998 Level I
- ROPS – ISO 12117-2:2008
- TOPS – ISO 12117:1997
- Stick Steer Mode
- Travel Cruise Control
- Control Pattern Changer (optional in some regions)
- Adjustable Wrist Rests
- Washable Floor Mat
- Travel Pedals and Hand Levers
- Machine Security – Standard Key with Pass Code
- Fabric Suspension Seat (Cab only)
- Vinyl Suspension Seat (Canopy only)
- Hydraulic Lockout – All Controls
- Retractable High Visibility Seat Belt (75 mm/3 in)
- Coat Hook
- Cup Holder
- Storage Pocket
- Skylight
- Mounting Bosses for Front
- Signaling/Warning Horn
- Interior Light (Cab only)
- Boom Light, Halogen (not available in all regions)
- Utility Space for Mobile Phone
- Next Generation Color LCD Monitor (IP66)
  – Fuel Level and Coolant Temperature Gauges
  – Maintenance and Machine Monitoring
  – Performance and Machine Adjustments
  – Numeric Security Code
  – Multiple Languages
  – Hour Meter with Wake Up Switch
  – Jog Dial (cab only)
UNDERCARRIAGE
- Rubber Belt (350 mm/13.8 in)
- Dozer Straight Blade
- Dozer Blade Float
- Tie Downs on Track Frame
BOOM, STICK AND LINKAGES
- One Piece Boom (2500 mm/98.4 in)
- Standard Stick (1395 mm/54.9 in)
- Front Shovel Capable – Pin-On
- Thumb Ready
- Certified Lifting Eye
ELECTRICAL
- 12 Volt Battery
- Software (machine and monitor)
- Maintenance Free Battery
- Battery Disconnect
- 12 Volt Power Socket
- Travel Alarm (optional in some regions)
OTHER
- Counterweight (225 kg/496 lb)

OPTIONAL EQUIPMENT

OPERATOR ENVIRONMENT
- Cab with Air Conditioning
- Cab with Heater
- No Travel Pedals and Hand Levers (optional in some regions)
- Machine Security – Push to Start with Key Fob/Pass Code
- LED Front Lights
- LED Front and Rear Lights
- LED Boom Light
- Mirrors, Left, Right and Rear
- Camera
- Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only) (Cab only)
- Next Generation Advanced Monitor
  – Touch Screen
  – Site Reference System
  – High Definition Camera Capable (IP68 and IP69K)
  – Numeric Security Code
UNDERCARRIAGE
- Steel Track (350 mm/13.8 in)
- Steel Track with Rubber Pads
- Angle Blade
BOOM, STICK AND LINKAGES
- Long Stick (1695 mm/66.7 in)
- Front Shovel Capable – Dual Lock Manual Coupler
- Front Shovel Capable – Hydraulic Coupler
- Attachments including Couplers, Thumbs, Buckets, Augers and Hammers
- 2nd Auxiliary Hydraulic Lines
- Bucket Divert Lines
- Boom Lowering Check Valve
- Stick Lowering Check Valve
- Hydraulic Quick Coupler Lines
ELECTRICAL
- Product Link™ PL243 (regulations apply)
- Product Link PLE643 (regulations apply)
GUARDING
- Polycarbonate Half Height Front Guard (Canopy only)
- Polycarbonate Front Guard (ISO 10262:1998 Level I and EN356 P5A)
- Heavy Duty Front Guard ISO 10262:1998 Level II
- Heavy Duty Top Guard 10262:1998 Level II (Cab only)
OTHER
- Bio Oil Capable
- Eco Drain
- Water Jacket Heater