305.5E2 CR Mini Hydraulic Excavator

The Cat® 305.5E2 CR Mini Hydraulic Excavator delivers high performance, durability and versatility in a compact design to help you work in a variety of applications.

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Net Power 44.1 HP
Engine Model Cat® C2.4
Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 44.1 HP
Bore 3.4 in
Stroke 4 in
Displacement 146 in³
Gross Power - ISO 14396 45.7 HP
Emissions Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards.
Operating Weight 11958 lb
Weight - Canopy, Standard Stick 11503 lb
Weight - Cab, Long Stick 11958 lb
Note *Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Weight - Cab, Standard Stick 11863 lb
Weight - Canopy, Long Stick 11596 lb
Travel Speed - High 2.8 mile/h
Maximum Traction Force - High Speed 6025 lb
Travel Speed - Low 1.7 mile/h
Maximum Traction Force - Low Speed 10746 lb
Ground Pressure - Canopy 4.5 psi
Ground Pressure - Cab 4.6 psi
Gradeability - Maximum 30°
Operating Pressure - Travel 3553 psi
Digging Force - Stick - Long 5575 lb
Operating Pressure - Swing 3132 psi
Operating Pressure - Equipment 3553 psi
Digging Force - Stick - Standard 6500 lb
Pump Flow at 2,400 rpm 39.6 gal/min
Maximum Auxiliary Circuit - Primary - Pressure 3553 psi
Maximum Auxiliary Circuit - Secondary - Pressure 3553 psi
Maximum Auxiliary Circuit - Secondary - Flow 6.6 gal/min
Maximum Auxiliary Circuit - Primary - Flow 21.1 gal/min
Digging Force - Bucket 11445 lb
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Machine Swing Speed 10 r/min
Boom Swing - Right 50°
Boom Swing - Left - Without Stop* 80°
Boom Swing - Left - With Stop* 60°
Note *Automatic swing brake, spring applied, hydraulic release.
Width 78 in
Height 14.8 in
Dig Depth 21.9 in
Lift Height 15.9 in
Hydraulic Tank 18 gal (US)
Cooling System 2.8 gal (US)
Fuel Tank 16.6 gal (US)
Engine Oil 2.5 gal (US)
Hydraulic System 20.6 gal (US)
Dig Depth 152 in
Boom Swing - Right 31 in
O/A Shipping Length 215 in
Vertical Wall 107 in
O/A Shipping Height 100 in
Maximum Blade Depth 22 in
Maximum Dump Clearance 161 in
Maximum Reach - Ground Level 237 in
Maximum Blade Height 16 in
Tail Swing 44 in
Swing Bearing - Height 24 in
Maximum Dig Height 220 in
Boom Swing - Left 27 in
Track Belt/Shoe Width 16 in
Maximum Reach 243 in
O/A Track Width 78 in
Boom In Reach 100 in
O/A Undercarriage Length 102 in
Boom Height - Shipping Position 85 in
Stick Length - Long 70 in
Counterweight 364.4 lb
Stick Length - Standard 55 in
Boom In Reach 94 in
O/A Shipping Height 100 in
Dig Depth 137 in
Maximum Blade Depth 22 in
Track Belt/Shoe Width 16 in
O/A Undercarriage Length 102 in
Maximum Blade Height 16 in
O/A Shipping Length 210 in
Maximum Reach - Ground Level 222 in
Boom Swing - Right 31 in
Maximum Dig Height 210 in
Vertical Wall 92 in
Tail Swing 44 in
Boom Height - Shipping Position 69 in
Boom Swing - Left 27 in
O/A Track Width 78 in
Maximum Dump Clearance 150 in
Swing Bearing - Height 24 in
Maximum Reach 228 in
Number of Carrier Rollers 1
Track Roller Type Center Flange
Number of Track Rollers 4
Blade Up - Front 3417 lb
Blade Up - Side 2535 lb
Blade Down - Side 2844 lb
Blade Down - Front 5710 lb
Blade Down - Front 3042 lb
Blade Up - Side 1367 lb
Blade Up - Front 1808 lb
Blade Down - Side 1521 lb
Tip Over Protective Structure (TOPS) ISO 12117
Top Guard ISO 10262 (Level I)
Roll Over Protective Structure (ROPS) ISO 12117-2
Dynamic Operator Sound Pressure Level (ISO 6396:2008) 81 dB(A)
Note *European Union Directive “2000/14/EC”
Exterior Sound Power Level - ISO 6395:2008* 97 dB(A)
Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg of refrigerant which has a CO2 equivalent of 1.4 metric tonnes.
ENGINE
  • Cat C2.4 diesel engine (meets U.S. EPA Tier 4 Final emission standards for North America and EU Stage IIIA/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™
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
OTHER ATTACHMENTS
  • Counterweight, extra