305E2 CR Mini Excavator

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Net Power40.2 HP (30 kW)
Operating Weight11443 lb (5185 kg)
Dig Depth144 in (3670 mm)
Machine Swing Speed10 r/min (10 r/min)
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 Power40.2 HP (30 kW)
Operating Weight11443 lb (5185 kg)
Dig Depth144 in (3670 mm)
Machine Swing Speed10 r/min (10 r/min)
Width78 in (1980 mm)
Height14.8 in (375 mm)
Dig Depth21.9 in (555 mm)
Lift Height15.9 in (405 mm)
Cooling System2.8 gal (US) (10.5 l)
Engine Oil2.5 gal (US) (9.5 l)
Hydraulic Tank18 gal (US) (68.3 l)
Fuel Tank16.6 gal (US) (63 l)
O/A Shipping Height100 in (2550 mm)
Weight - Canopy, Long Stick11069 lb (5020 kg)
O/A Shipping Height100 in (2550 mm)
O/A Shipping Length204 in (5180 mm)
Maximum Reach220 in (5600 mm)
O/A Undercarriage Length102 in (2580 mm)
O/A Undercarriage Length102 in (2580 mm)
Maximum Blade Depth22 in (555 mm)
Track Belt/Shoe Width16 in (400 mm)
Ground Pressure - Cab4.4 psi (30.5 kPa)
Blade Up - Side1257 lb (570 kg)
Weight - Cab, Long Stick11443 lb (5185 kg)
Dynamic Operator Sound Pressure Level (ISO 6396:2008)81 dB(A) (81 dB(A))
Exterior Sound Power Level - ISO 6395:2008*96 dB(A) (96 dB(A))
Swing Bearing - Height24 in (615 mm)
Blade Down - Side2646 in (1200 kg)
Ground Pressure - Canopy4.3 psi (29.5 kPa)
Track Belt/Shoe Width16 in (400 mm)
Blade Down - Front5159 lb (2340 kg)
Dig Depth129 in (3280 mm)
Blade Up - Front3197 lb (1450 kg)
Boom In Reach93 in (2350 mm)
Vertical Wall104 in (2630 mm)
Stick Length - Standard52 in (1350 mm)
Maximum Reach - Ground Level210 in (5330 mm)
Maximum Dump Clearance129 in (3720 mm)
Swing Bearing - Height24 in (615 mm)
Maximum Dig Height207 in (5250 mm)
Vertical Wall91 in (2320 mm)
Maximum Dig Height214 in (5440 mm)
Blade Up - Front1676 lb (760 kg)
Boom Swing - Right31 in (785 mm)
Boom Height - Shipping Position69 in (1750 mm)
O/A Track Width78 in (1980 mm)
Weight - Cab, Standard Stick11334 lb (5140 kg)
Maximum Blade Height16 in (405 mm)
Maximum Blade Depth22 in (555 mm)
Maximum Blade Height16 in (405 mm)
Digging Force - Stick - Standard5550 lb (24.7 kN)
Pump Flow at 2,400 rpm39.6 gal/min (150 l/min)
Operating Pressure - Travel3553 psi (245 bar)
Operating Pressure - Swing3132 psi (216 bar)
Operating Pressure - Equipment3553 psi (245 bar)
Auxiliary Circuit - Primary (186 bar/2,734 psi)21.1 gal/min (80 l/min)
Auxiliary Circuit - Secondary (174 bar/2,524 psi)6.6 gal/min (25 l/min)
Travel Speed - Low1.7 mile/h (2.8 km/h)
Hydraulic System20.6 gal (US) (78 l)
Travel Speed - High2.7 mile/h (4.4 km/h)
Maximum Traction Force - High Speed5418 lb (24.1 kN)
Maximum Traction Force - Low Speed10161 lb (45.2 kN)
Bore3.4 in (87 mm)
Stroke4 in (102.4 mm)
Displacement146 in³ (2.4 l)
Weight - Canopy, Standard Stick10970 lb (4975 kg)
Digging Force - Stick - Long4788 lb (21.3 kN)
Stick Length - Long67 in (1750 mm)
Maximum Reach235 in (5960 mm)
O/A Shipping Length208 in (5290 mm)
Boom Swing - Left27 in (695 mm)
Blade Up - Side2359 in (1070 kg)
Boom Swing - Right31 in (785 mm)
Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/126940.2 HP (30 kW)
O/A Track Width78 in (1980 mm)
Boom Swing - Left27 in (695 mm)
Blade Down - Front2778 lb (1260 kg)
Boom Height - Shipping Position85 in (2150 mm)
Maximum Reach - Ground Level229 in (5810 mm)
Tail Swing43 in (1100 mm)
Maximum Dump Clearance154 in (3920 mm)
Digging Force - Bucket10050 lb (44.7 kN)
Gross Power - ISO 1439641.8 HP (31.2 kW)
Blade Down - Side1411 lb (640 kg)
Tail Swing43 in (1100 mm)
Boom In Reach100 in (2530 mm)

Benefits and Features

The durable hoods and frame and the compact radius design of the 305E2 let you work comfortably and confidently in confined areas. The operator environment includes a high quality suspension seat, easy to adjust armrests and 100% pilot controls which offer consistent and long-lasting controllability.

High Definition Hydraulic System provides a load sensing and flow sharing capability leading to operational precision, efficient performance and greater controllability. Power on Demand provides optimal efficiency and performance the moment you need it. This automatic system ensures fuel efficiency through appropriate engine rating to meet all operational needs as required.

Broad range of Cat Work Tools make the Cat Mini Excavator a versatile machine able to meet the requirements of any job site. Over 200 degrees of bucket rotation provides greater material retention during truck loading and easier flat wall digging without having to reposition the machine.

Front shovel bucket orientation provides the operator with more ways to get the job done faster. COMPASS Control Panel is a standard feature that allows the operator to easily adjust auxiliary flows to achieve the optimal work tool performance, activate auto idle for improved fuel efficiency and utilize the security system to ensure protection of valuable assets with the simple touch of a button. The Site Reference System included in the COMPASS monitor provides output from pitch and roll sensors to aid in grading and level trenching. This impacts accuracy and productivity for job site finishing.

Convenient service and maintenance requirements include ease of access to daily check points, 500 hour engine oil and filter change period, 500 hour grease interval on front implement, S·O·SSM oil sampling valve and overall long term durability.

All Cat Mini Excavators from 3.5 metric tons to 8 metric tons are ROPS, TOPS and Top Guard Level 1 certified and include the Cat Interlock (hydraulic lockout) System, a certified accumulator which allows for auxiliary pressure to be released, making connecting and disconnecting work tools safer and easier, and a travel alarm. All of these safety features are standard on the E2 model lineup (travel alarm optional in Europe).

Standard Equipment

  • 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
  • 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
  • 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
  • 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
  • Boom light with time delay capability
  • 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
  • Quick coupler lines
  • Boom lowering check valve
  • Stick lowering check valve
  • Secondary auxiliary hydraulic lines
  • 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)
  • Quick coupler: manual or hydraulic
  • Thumb
  • Buckets
  • Full range of performance matched work tools
    • Auger, hammer, ripper
  • Light, cab with time delay capability
  • Mirror, canopy right
  • Mirror, canopy left
  • Mirror, cab rear
  • Battery disconnect
  • Beacon socket
  • Front wire mesh guard
  • Rearview camera
  • Vandal guard