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.

From: $89,859.46*

* Taxes, shipping & handling, surcharges, assembly charges, destination, freight and/or delivery charges are not included. This is not an offer for sale. Displayed pricing is for informational purposes only. The pricing shown above utilizes the Manufacturer's Suggested Retail Price (MSRP) that is published for the machine (without any attachments or protection plans) as described above. The actual prices and terms and conditions of sale for all products are to be solely determined by the selling

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Bore 3.3in
Displacement 101in³
Emissions Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Engine Model C1.7 Turbo
Gross Power - 2,400 rpm - SAE J1995:2014 48.4HP
Net Power 45HP
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC 45HP
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.
Stroke 3.9in
Maximum Operating Weight with Cab** 9867lb
Maximum Operating Weight with Canopy** 9647lb
Minimum Operating Weight with Cab* 8875lb
Minimum Operating Weight with Canopy* 8655lb
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.
Operating Weight 9867lb
Boom Height - Shipping Position 75.2in
Boom In Reach 92.1in
Boom Swing - Left 20.9in
Boom Swing - Right 28.7in
Dig Depth 138.2in
Ground Clearance 12in
Maximum Blade Depth 18.7in
Maximum Blade Height 16.5in
Maximum Dig Height 201.8in
Maximum Dump Clearance 147.2in
Maximum Reach 219.3in
Maximum Reach - Ground Level 214.4in
Note *Overall Shipping Length depends on blade position during shipment.
O/A Shipping Height 100in
O/A Undercarriage Length 87in
Overall Shipping Length* 194.9in
Stick Length 66.7in
Swing Bearing - Height 21.9in
Tail Swing with Counterweight 51.2in
Tail Swing without Counterweight 47.4in
Track Belt/Shoe Width 13.8in
Track Width 66.9in
Vertical Wall 99.8in
Angle Blade 243lb
Counterweight 496lb
Long Stick 66lb
Steel Tracks 430lb
Gradeability - Maximum 30 degrees
Ground Pressure - Maximum Weight 4.9psi
Ground Pressure - Minimum Weight 4.2psi
Maximum Traction Force - High Speed 4271lbf
Maximum Traction Force - Low Speed 7329lbf
Travel Speed - High 3.2mile/h
Travel Speed - Low 2.2mile/h
Cooling System 2.9gal (US)
Engine Oil 1.6gal (US)
Fuel Tank 17gal (US)
Hydraulic System 17gal (US)
Hydraulic Tank 14gal (US)
Auxiliary Circuit - Primary - Flow 21gal/min
Auxiliary Circuit - Primary - Pressure 3553psi
Auxiliary Circuit - Secondary - Flow 7gal/min
Auxiliary Circuit - Secondary - Pressure 3553psi
Digging Force - Bucket 8588lbf
Digging Force - Stick - Long 4316lbf
Digging Force - Stick - Standard 4721lbf
Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Operating Pressure - Equipment 3553psi
Operating Pressure - Swing 2611psi
Operating Pressure - Travel 3553psi
Pump Flow at 2,400 rpm 25gal/min
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Boom Swing - Left 78 Degrees
Boom Swing - Right 50 Degrees
Machine Swing Speed 9r/min
Angle Blade - Left 25 Degrees
Angle Blade - Right 25 Degrees
Angle Blade Height 14.2in
Angle Blade Width 66.9in
Straight Blade Height 14.2in
Straight Blade Width 66.9in
Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Tip Over Protective Structure (TOPS) ISO 12117:1997
Top Guard ISO 10262:1998 (Level I)
Average Exterior Sound Pressure (ISO 6395:2008) 97dB(A)
Note European Union Directive “2000/14/EC”
Operator Sound Pressure (ISO 6396:2008) 76dB(A)
Boom Height - Shipping Position 63.8in
Boom In Reach 88.8in
Boom Swing - Left 20.9in
Boom Swing - Right 28.7in
Dig Depth 126.4in
Ground Clearance 12in
Maximum Blade Depth 18.7in
Maximum Blade Height 16.5in
Maximum Dig Height 198.4in
Maximum Dump Clearance 143.5in
Maximum Reach 209.8in
Maximum Reach - Ground Level 204.7in
Note *Overall Shipping Length depends on blade position during shipment.
O/A Shipping Height 100in
O/A Undercarriage Length 87in
Overall Shipping Length* 194.9in
Stick Length 54.9in
Swing Bearing - Height 21.9in
Tail Swing with Counterweight 51.2in
Tail Swing without Counterweight 47.4in
Track Belt/Shoe Width 13.8in
Vertical Wall 94.3in

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