New CAT Equipment

304 Mini Excavator

Mini Excavators Inspired by Our Customers

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

Get a Quote

Benefits

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

Learn more about the 304 Mini Excavator

Watch

  • Blade
    Angle Blade - Left
    25 Degrees
    Angle Blade - Right
    25 Degrees
    Angle Blade Height
    14.2 in
    Angle Blade Width
    66.9 in
    Straight Blade Height
    14.2 in
    Straight Blade Width
    66.9 in
  • Certification - Cab and Canopy
    Roll Over Protective Structure (ROPS)
    ISO 12117-2:2008
    Tip Over Protective Structure (TOPS)
    ISO 12117:1997
    Top Guard
    ISO 10262:1998 (Level I)
  • Dimensions - Long Stick
    Boom Height - Shipping Position
    75.2 in
    Boom In Reach
    92.1 in
    Boom Swing - Left
    20.9 in
    Boom Swing - Right
    28.7 in
    Dig Depth
    138.2 in
    Ground Clearance
    12 in
    Maximum Blade Depth
    18.7 in
    Maximum Blade Height
    16.5 in
    Maximum Dig Height
    201.8 in
    Maximum Dump Clearance
    147.2 in
    Maximum Reach
    219.3 in
    Maximum Reach - Ground Level
    214.4 in
    Note
    *Overall Shipping Length depends on blade position during shipment.
    O/A Shipping Height
    100 in
    O/A Undercarriage Length
    87 in
    Overall Shipping Length*
    194.9 in
    Stick Length
    66.7 in
    Swing Bearing - Height
    21.9 in
    Tail Swing with Counterweight
    51.2 in
    Tail Swing without Counterweight
    47.4 in
    Track Belt/Shoe Width
    13.8 in
    Track Width
    66.9 in
    Vertical Wall
    99.8 in
  • Dimensions - Standard Stick
    Boom Height - Shipping Position
    63.8 in
    Boom In Reach
    88.8 in
    Boom Swing - Left
    20.9 in
    Boom Swing - Right
    28.7 in
    Dig Depth
    126.4 in
    Ground Clearance
    12 in
    Maximum Blade Depth
    18.7 in
    Maximum Blade Height
    16.5 in
    Maximum Dig Height
    198.4 in
    Maximum Dump Clearance
    143.5 in
    Maximum Reach
    209.8 in
    Maximum Reach - Ground Level
    204.7 in
    Note
    *Overall Shipping Length depends on blade position during shipment.
    O/A Shipping Height
    100 in
    O/A Undercarriage Length
    87 in
    Overall Shipping Length*
    194.9 in
    Stick Length
    54.9 in
    Swing Bearing - Height
    21.9 in
    Tail Swing with Counterweight
    51.2 in
    Tail Swing without Counterweight
    47.4 in
    Track Belt/Shoe Width
    13.8 in
    Vertical Wall
    94.3 in
  • Engine
    Bore
    3.3 in
    Displacement
    101 in³
    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
    48.4 hp
    Net Power
    45 hp
    Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
    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.
    Stroke
    3.9 in
  • Hydraulic System
    Auxiliary Circuit - Primary - Flow
    21 gal/min
    Auxiliary Circuit - Primary - Pressure
    3553 psi
    Auxiliary Circuit - Secondary - Flow
    7 gal/min
    Auxiliary Circuit - Secondary - Pressure
    3553 psi
    Digging Force - Bucket
    8588 lbf
    Digging Force - Stick - Long
    4316 lbf
    Digging Force - Stick - Standard
    4721 lbf
    Note
    Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
    Operating Pressure - Equipment
    3553 psi
    Operating Pressure - Swing
    2611 psi
    Operating Pressure - Travel
    3553 psi
    Pump Flow at 2,400 rpm
    25 gal/min
    Type
    Load Sensing Hydraulics with Variable Displacement Piston Pump
  • Service Refill Capacities
    Cooling System
    2.9 gal (US)
    Engine Oil
    1.6 gal (US)
    Fuel Tank
    17 gal (US)
    Hydraulic System
    17 gal (US)
    Hydraulic Tank
    14 gal (US)
  • Sound
    Average Exterior Sound Pressure (ISO 6395:2008)
    97 dB(A)
    Note
    European Union Directive “2000/14/EC”
    Operator Sound Pressure (ISO 6396:2008)
    76 dB(A)
  • Sustainability
    Recyclability
    96%
  • Swing System
    Boom Swing - Left
    78 Degrees
    Boom Swing - Right
    50 Degrees
    Machine Swing Speed
    9 r/min
  • Travel System
    Gradeability - Maximum
    30 degrees
    Ground Pressure - Maximum Weight
    4.9 psi
    Ground Pressure - Minimum Weight
    4.2 psi
    Maximum Traction Force - High Speed
    4271 lbf
    Maximum Traction Force - Low Speed
    7329 lbf
    Travel Speed - High
    3.2 mile/h
    Travel Speed - Low
    2.2 mile/h
  • Weight Increase from Minimum Configuration
    Angle Blade
    243 lb
    Counterweight
    496 lb
    Long Stick
    66 lb
    Steel Tracks
    430 lb
  • Weights
    Maximum Operating Weight with Cab**
    9867 lb
    Maximum Operating Weight with Canopy**
    9647 lb
    Minimum Operating Weight with Cab*
    8875 lb
    Minimum Operating Weight with Canopy*
    8655 lb
    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
    9867 lb
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)
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

Download Resources

Site Map Legal Terms Privacy Policy Your Privacy Choices California Collection Notice Cookie Policy
Copyright © 2026 Fabick Cat | All Rights Reserved.

Fabick Cat & Fabick Cat Rentals are not affiliated with Fabick, Inc. Click here for more information.