305 Mini Hydraulic Excavator

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The Cat® 305 Mini Hydraulic Excavator delivers high performance, durability and versatility in a compact design to help you work in a variety of applications.

ID Number M23418
Model 305
Model Year 2022
Serial Number 05G501188
Location PLEASANT GROVE 7518
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Net Power 40.2HP
Engine Model Cat C2.4
Note The Cat C2.4 meets U.S. EPA Tier 4 Final emission standards for North America, EU Stage V emission standards for Europe and Tier 4 Interim emission standards for all other regions.
Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 40.2HP
Displacement 146in³
Stroke 4in
Bore 3.4in
Gross Power - ISO 14396 41.8HP


Operating Weight 11443lb
Weight - Cab, Standard Stick 11334lb
Weight - Canopy, Standard Stick 10970lb
Weight - Cab, Long Stick 11443lb
Weight - Canopy, Long Stick 11069lb

Dimensions - Long Stick

Dig Depth 144in
Vertical Wall 104in
Maximum Dig Height 214in
Boom Swing - Right 31in
Boom In Reach 100in
Boom Height - Shipping Position 85in
Maximum Dump Clearance 154in
Tail Swing 43in
Maximum Reach - Ground Level 229in
O/A Shipping Length 208in
O/A Track Width 78in
Boom Swing - Left 27in
Maximum Reach 235in
Maximum Blade Height 16in
Swing Bearing - Height 24in
O/A Undercarriage Length 102in
O/A Shipping Height 100in
Maximum Blade Depth 22in
Track Belt/Shoe Width 16in

Swing System

Machine Swing Speed 10r/min


Width 78in
Height 14.8in
Dig Depth 21.9in
Lift Height 15.9in

Service Refill Capacities

Cooling System 2.8gal (US)
Engine Oil 2.5gal (US)
Hydraulic Tank 18gal (US)
Fuel Tank 16.6gal (US)
Hydraulic System 20.6gal (US)

Dimensions - Standard Stick

Maximum Dump Clearance 129in
Maximum Reach - Ground Level 210in
Boom In Reach 93in
O/A Shipping Height 100in
Vertical Wall 91in
Boom Height - Shipping Position 69in
Maximum Dig Height 207in
Tail Swing 43in
Boom Swing - Left 27in
Maximum Blade Depth 22in
Boom Swing - Right 31in
O/A Track Width 78in
Maximum Blade Height 16in
Track Belt/Shoe Width 16in
O/A Undercarriage Length 102in
Maximum Reach 220in
O/A Shipping Length 204in
Swing Bearing - Height 24in
Dig Depth 129in

Operating Specifications

Stick Length - Standard 52in
Stick Length - Long 67in

Lift Capacities at Ground Level - Lift Point Radius: 3000 mm (9'8”)

Blade Up - Front 3197lb
Blade Up - Side 2359in
Blade Down - Side 2646in
Blade Down - Front 5159lb

Lift Capacities at Ground Level - Lift Point Radius: 4000 mm (13'1”)

Blade Up - Front 1676lb
Blade Down - Side 1411lb
Blade Down - Front 2778lb
Blade Up - Side 1257lb

Hydraulic System

Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Digging Force - Stick - Standard 5550lb
Operating Pressure - Equipment 3553psi
Operating Pressure - Swing 3132psi
Operating Pressure - Travel 3553psi
Pump Flow at 2,400 rpm 39.6gal/min
Digging Force - Stick - Long 4788lb
Digging Force - Bucket 10050lb
Maximum Auxiliary Circuit - Secondary - Flow at Pump 6.6gal/min
Maximum Auxiliary Circuit - Primary - Flow at Pump 21.1gal/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump 3553psi
Maximum Auxiliary Circuit - Primary - Pressure at Pump 3553psi

Travel System

Maximum Traction Force - Low Speed 10161lb
Maximum Traction Force - High Speed 5418lb
Travel Speed - High 2.7mile/h
Travel Speed - Low 1.7mile/h
Ground Pressure - Cab 4.4psi
Ground Pressure - Canopy 4.3psi


Exterior Sound Power Level - ISO 6395:2008* 96dB(A)
Dynamic Operator Sound Pressure Level (ISO 6396:2008) 81dB(A)

Standard Equipment

  • Cat C2.4 diesel engine (meets U.S. EPA Tier 4 Final emission standards for North America, EU Stage V emission standards for Europe and Tier 4 Interim emission standards for all other regions)
  • Automatic engine idle
  • Automatic engine shut-off
  • Automatic two speed travel
  • Diesel Particulate Filter (North America only)
  • Diesel Oxidation Catalyst (North America only)
  • Fuel and water separator
  • Power on demand
Hydraulic System
  • 1-way and 2-way (combined function)
  • Accumulator
  • Automatic swing parking brake
  • Auxiliary hydraulic lines
  • Adjustable auxiliary relief
  • Auxiliary line quick disconnects
  • Cat interlock system: hydraulic lockout
  • Continuous auxiliary flow
  • Ecology drain
  • Hydraulic oil cooler
  • High definition hydraulics
  • Load sensing/flow sharing
Operator Environment
  • 100% pilot control ergonomic joysticks
  • Adjustable armrests
  • COMPASS: complete, operation, maintenance, performance and security system
    • Multiple languages
  • Cup holder
  • Hydraulic neutral lockout bar
  • Literature holder
  • Pattern changer (optional in Europe)
  • Site reference system: leveling
  • Tool storage area
  • Travel control pedals with hand levers
  • Washable floor mat
  • Dozer blade with float function
  • Track, rubber belt, 400 mm (16 in) width
  • Tie down eyes on track frame
  • Towing eye on base frame
Front Linkage
  • 200 degree bucket rotation
  • Certified lifting eye on bucket linkage (optional in Europe)
  • Front shovel capable
  • Thumb ready stick
  • 12 volt electrical system
  • 60 ampere alternator
  • 650 CCA maintenance free battery
  • Fuse box
  • Ignition key start/stop switch
  • Slow blow fuse
  • Warning horn
Lights And Mirrors
  • Boom light with time delay capability
Safety And Security
  • Anti-theft system (COMPASS)
  • Caterpillar Corporate “One Key” System
  • Door locks
  • Lockable fuel cap
  • Retractable seat belt
  • Roll Over Protective Structure (ROPS) (ISO 12117-2)
  • Tip Over Protective Structure (TOPS) (ISO 12117)
  • Top guard – ISO 10262 (Level 1)
  • Travel alarm (optional in Europe)
  • Product Link

Optional Equipment

  • Engine block heater
Hydraulic System
  • Quick coupler lines
  • Boom lowering check valve
  • Stick lowering check valve
  • Secondary auxiliary hydraulic lines
Operator Environment
  • Cab:
    • Air conditioning
    • Heat
    • High back suspension seat
    • Interior light
    • Interlocking front window system
    • Radio
    • Windshield wiper
  • Power angle blade
  • Track, double grouser (steel), 400 mm (16 in)
  • Track, double grouser (steel) with rubber pad, 400 mm (16 in)
Front Linkage
  • Quick coupler: manual or hydraulic
  • Thumb
  • Buckets
  • Full range of performance matched work tools
    • Auger, hammer, ripper
Lights And Mirrors
  • Light, cab with time delay capability
  • Mirror, canopy right
  • Mirror, canopy left
  • Mirror, cab rear
Safety And Security
  • Battery disconnect
  • Beacon socket
  • Front wire mesh guard
  • Rearview camera
  • Vandal guard