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304 Mini Excavator

At a glance data:

Engine Model:
C1.7 Turbo
304 Mini Hydraulic Excavator

Overview

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

Category:
Mini Excavators

Brand:
Caterpillar

Engine

Gross Power - ISO 14396:
48.4hp
Net Power:
45hp
Engine Model:
C1.7 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC:
45hp
Bore:
3.3in
Stroke:
3.9in
Displacement:
101in³
Emissions:
Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
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

Operating Weight:
9867lb
Minimum Operating Weight with Canopy*:
8655lb
Maximum Operating Weight with Canopy**:
9647lb
Minimum Operating Weight with Cab*:
8875lb
Maximum Operating Weight with Cab**:
9867lb
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.

Weight Increase from Minimum Configuration

Counterweight:
496lb
Long Stick:
66lb
Steel Tracks:
430lb
Angle Blade:
243lb

Travel System

Travel Speed - High:
3.2mile/h
Travel Speed - Low:
2.2mile/h
Maximum Traction Force - High Speed:
4271lbf
Maximum Traction Force - Low Speed:
7329lbf
Ground Pressure - Minimum Weight:
4.2psi
Ground Pressure - Maximum Weight:
4.9psi
Gradeability - Maximum:
30 degrees

Service Refill Capacities

Cooling System:
2.9gal (US)
Engine Oil:
1.6gal (US)
Fuel Tank:
17gal (US)
Hydraulic Tank:
14gal (US)
Hydraulic System:
17gal (US)

Hydraulic System

Type:
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm:
25gpm
Operating Pressure - Equipment:
3553psi
Operating Pressure - Travel:
3553psi
Operating Pressure - Swing:
2611psi
Auxiliary Circuit - Primary - Flow:
21gpm
Auxiliary Circuit - Primary - Pressure:
3553psi
Auxiliary Circuit - Secondary - Flow:
7gpm
Auxiliary Circuit - Secondary - Pressure:
3553psi
Digging Force - Stick - Standard:
4721lbf
Digging Force - Stick - Long:
4316lbf
Digging Force - Bucket:
8588lbf
Note:
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.

Swing System

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

Blade

Straight Blade Width:
66.9in
Straight Blade Height:
14.2in
Angle Blade Width:
66.9in
Angle Blade Height:
14.2in
Angle Blade - Left:
25 Degrees
Angle Blade - Right:
25 Degrees

Certification - Cab and Canopy

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

Dimensions - Standard Stick

Dig Depth:
126.4in
Vertical Wall:
94.3in
Maximum Reach - Ground Level:
204.7in
Maximum Reach:
209.8in
Maximum Dig Height:
198.4in
Maximum Dump Clearance:
143.5in
Boom In Reach:
88.8in
Tail Swing without Counterweight:
47.4in
Tail Swing with Counterweight:
51.2in
Maximum Blade Height:
16.5in
Maximum Blade Depth:
18.7in
Boom Height - Shipping Position:
63.8in
O/A Shipping Height:
100in
Swing Bearing - Height:
21.9in
O/A Undercarriage Length:
87in
Overall Shipping Length*:
194.9in
Boom Swing - Right:
28.7in
Boom Swing - Left:
20.9in
Track Belt/Shoe Width:
13.8in
Ground Clearance:
12in
Stick Length:
54.9in
Note:
*Overall Shipping Length depends on blade position during shipment.

Dimensions - Long Stick

Dig Depth:
138.2in
Vertical Wall:
99.8in
Maximum Reach - Ground Level:
214.4in
Maximum Reach:
219.3in
Maximum Dig Height:
201.8in
Maximum Dump Clearance:
147.2in
Boom In Reach:
92.1in
Tail Swing without Counterweight:
47.4in
Tail Swing with Counterweight:
51.2in
Maximum Blade Height:
16.5in
Maximum Blade Depth:
18.7in
Boom Height - Shipping Position:
75.2in
O/A Shipping Height:
100in
Swing Bearing - Height:
21.9in
O/A Undercarriage Length:
87in
Overall Shipping Length*:
194.9in
Boom Swing - Right:
28.7in
Boom Swing - Left:
20.9in
Track Belt/Shoe Width:
13.8in
Track Width:
66.9in
Ground Clearance:
12in
Stick Length:
66.7in
Note:
*Overall Shipping Length depends on blade position during shipment.

Air Conditioning System

Air Conditioning:
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe).

Sound

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

Sustainability

Recyclability:
96%

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)
  • 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
  • Hydraulic Quick Coupler Lines

electrical

  • 12 Volt Battery
  • Software (machine and monitor)
  • Maintenance Free Battery
  • Lock Out/Tag Out Battery Disconnect
  • 12 Volt Power Socket
  • Product Link™ Elite
  • Travel Alarm (optional in some regions)

guarding

  • ROPS – ISO 12117-2:2008
  • Top Guard ISO 10262:1998 Level I

other

  • Eco Drain

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
  • Seat Belt Reminder System
  • LED Front and Rear Lights
  • 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)
  • 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 (Europe Standard)
  • Stick Lowering Check Valve (Europe Standard)

electrical

  • Cat Grade Advanced 2D
  • Cat Grade 3D

guarding

  • Top Guard ISO 10262:1998 (Level II)
  • Front Guard (Mesh) ISO 10262:1998 (Level I)
  • Front Guard (Heavy Duty) ISO 10262:1998 Level (II)

other

  • Bio Oil Capable
  • Water Jacket Heater
  • Counterweight (225 kg/496 lb)