Cat 305E2 CR

Mini excavators

About the Cat 305E2 CR


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 30 kW
Engine Model Cat C2.4
Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 30 kW
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.
Displacement 2.4 l
Stroke 102.4 mm
Bore 87 mm
Gross Power - ISO 14396 31.2 kW
Operating Weight 5185 kg
Weight - Canopy, Standard Stick 4975 kg
Weight - Cab, Long Stick 5185 kg
Weight - Canopy, Long Stick 5020 kg
Weight - Cab, Standard Stick 5140 kg
Travel System
Maximum Traction Force - Low Speed 45.2 kN
Maximum Traction Force - High Speed 24.1 kN
Travel Speed - High 4.4 km/h
Travel Speed - Low 2.8 km/h
Ground Pressure - Cab 30.5 kPa
Ground Pressure - Canopy 29.5 kPa
Hydraulic System
Digging Force - Stick - Standard 24.7 kN
Operating Pressure - Equipment 245 bar
Operating Pressure - Swing 216 bar
Operating Pressure - Travel 245 bar
Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Pump Flow at 2,400 rpm 150 l/min
Digging Force - Stick - Long 21.3 kN
Maximum Auxiliary Circuit - Secondary - Flow at Pump 25 l/min
Maximum Auxiliary Circuit - Primary - Flow at Pump 80 l/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump 24500 kPa
Maximum Auxiliary Circuit - Primary - Pressure at Pump 24500 kPa
Digging Force - Bucket 44.7 kN
Swing System
Machine Swing Speed 10 r/min
Width 1980 mm
Height 375 mm
Dig Depth 555 mm
Lift Height 405 mm
Service Refill Capacities
Cooling System 10.5 l
Engine Oil 9.5 l
Hydraulic Tank 68.3 l
Fuel Tank 63 l
Hydraulic System 78 l
Dimensions - Long Stick
Dig Depth 3670 mm
Boom Height - Shipping Position 2150 mm
Maximum Dump Clearance 3920 mm
Tail Swing 1100 mm
Maximum Reach - Ground Level 5810 mm
O/A Shipping Length 5290 mm
O/A Track Width 1980 mm
Boom Swing - Left 695 mm
Maximum Reach 5960 mm
Maximum Blade Height 405 mm
Swing Bearing - Height 615 mm
O/A Undercarriage Length 2580 mm
O/A Shipping Height 2550 mm
Maximum Blade Depth 555 mm
Track Belt/Shoe Width 400 mm
Vertical Wall 2630 mm
Maximum Dig Height 5440 mm
Boom Swing - Right 785 mm
Boom In Reach 2530 mm
Operating Specifications
Stick Length - Long 1750 mm
Stick Length - Standard 1350 mm
Dimensions - Standard Stick
Tail Swing 1100 mm
Boom Swing - Left 695 mm
Maximum Blade Depth 555 mm
Boom Swing - Right 785 mm
O/A Track Width 1980 mm
Maximum Blade Height 405 mm
Track Belt/Shoe Width 400 mm
O/A Undercarriage Length 2580 mm
Maximum Reach 5600 mm
O/A Shipping Length 5180 mm
Swing Bearing - Height 615 mm
Dig Depth 3280 mm
Maximum Dump Clearance 3720 mm
Maximum Reach - Ground Level 5330 mm
Boom In Reach 2350 mm
O/A Shipping Height 2550 mm
Vertical Wall 2320 mm
Boom Height - Shipping Position 1750 mm
Maximum Dig Height 5250 mm
Lift Capacities at Ground Level - Lift Point Radius: 4000 mm (13'1”)
Blade Down - Side 640 kg
Blade Down - Front 1260 kg
Blade Up - Side 570 kg
Blade Up - Front 760 kg
Lift Capacities at Ground Level - Lift Point Radius: 3000 mm (9'8”)
Blade Up - Side 1070 kg
Blade Down - Side 1200 kg
Blade Down - Front 2340 kg
Blade Up - Front 1450 kg
Exterior Sound Power Level - ISO 6395:2008* 96 dB(A)
Dynamic Operator Sound Pressure Level (ISO 6396:2008) 81 dB(A)



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, 50 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 10 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).

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