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 40.2 HP
Engine Model Cat C2.4
Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 40.2 HP
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 146 in³
Stroke 4 in
Bore 3.4 in
Gross Power - ISO 14396 41.8 HP
Operating Weight 11443 lb
Weight - Canopy, Standard Stick 10970 lb
Weight - Cab, Long Stick 11443 lb
Weight - Canopy, Long Stick 11069 lb
Weight - Cab, Standard Stick 11334 lb
Travel System
Maximum Traction Force - Low Speed 10161 lb
Maximum Traction Force - High Speed 5418 lb
Travel Speed - High 2.7 mile/h
Travel Speed - Low 1.7 mile/h
Ground Pressure - Cab 4.4 psi
Ground Pressure - Canopy 4.3 psi
Hydraulic System
Digging Force - Stick - Standard 5550 lb
Operating Pressure - Equipment 3553 psi
Operating Pressure - Swing 3132 psi
Operating Pressure - Travel 3553 psi
Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Pump Flow at 2,400 rpm 39.6 gal/min
Digging Force - Stick - Long 4788 lb
Maximum Auxiliary Circuit - Secondary - Flow at Pump 6.6 gal/min
Maximum Auxiliary Circuit - Primary - Flow at Pump 21.1 gal/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump 3553 psi
Maximum Auxiliary Circuit - Primary - Pressure at Pump 3553 psi
Digging Force - Bucket 10050 lb
Swing System
Machine Swing Speed 10 r/min
Width 78 in
Height 14.8 in
Dig Depth 21.9 in
Lift Height 15.9 in
Service Refill Capacities
Cooling System 2.8 gal (US)
Engine Oil 2.5 gal (US)
Hydraulic Tank 18 gal (US)
Fuel Tank 16.6 gal (US)
Hydraulic System 20.6 gal (US)
Dimensions - Long Stick
Dig Depth 144 in
Boom Height - Shipping Position 85 in
Maximum Dump Clearance 154 in
Tail Swing 43 in
Maximum Reach - Ground Level 229 in
O/A Shipping Length 208 in
O/A Track Width 78 in
Boom Swing - Left 27 in
Maximum Reach 235 in
Maximum Blade Height 16 in
Swing Bearing - Height 24 in
O/A Undercarriage Length 102 in
O/A Shipping Height 100 in
Maximum Blade Depth 22 in
Track Belt/Shoe Width 16 in
Vertical Wall 104 in
Maximum Dig Height 214 in
Boom Swing - Right 31 in
Boom In Reach 100 in
Operating Specifications
Stick Length - Long 67 in
Stick Length - Standard 52 in
Dimensions - Standard Stick
Tail Swing 43 in
Boom Swing - Left 27 in
Maximum Blade Depth 22 in
Boom Swing - Right 31 in
O/A Track Width 78 in
Maximum Blade Height 16 in
Track Belt/Shoe Width 16 in
O/A Undercarriage Length 102 in
Maximum Reach 220 in
O/A Shipping Length 204 in
Swing Bearing - Height 24 in
Dig Depth 129 in
Maximum Dump Clearance 129 in
Maximum Reach - Ground Level 210 in
Boom In Reach 93 in
O/A Shipping Height 100 in
Vertical Wall 91 in
Boom Height - Shipping Position 69 in
Maximum Dig Height 207 in
Lift Capacities at Ground Level - Lift Point Radius: 4000 mm (13'1”)
Blade Down - Side 1411 lb
Blade Down - Front 2778 lb
Blade Up - Side 1257 lb
Blade Up - Front 1676 lb
Lift Capacities at Ground Level - Lift Point Radius: 3000 mm (9'8”)
Blade Up - Side 2359 in
Blade Down - Side 2646 in
Blade Down - Front 5159 lb
Blade Up - Front 3197 lb
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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