305E2 CR Mini Hydraulic Excavator

The Cat® 305E2 CR Mini Hydraulic Excavator delivers high performance, durability and versatility in a compact design to help you work in a variety of applications.


Net Power 40.2HP
Engine Model Cat C2.4
Gross Power - ISO 14396 41.8HP
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


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

Dimensions - Long Stick

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

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)

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

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

Dimensions - Standard Stick

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


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

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

Travel System

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

Hydraulic System

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

Standard Equipment

  • Engine
    • 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
  • Undercarriage
    • 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
  • Electrical
    • 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)
  • Technology
    • Product Link

Optional Equipment

  • Engine
    • 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
  • Undercarriage
    • 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