Overview
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.
Engine
Units:
| Engine Model | Cat® C2.4 | Cat® C2.4 |
| Net Power | 40.2 HP | 30.0 kW |
| Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 | 40.2 HP | 30.0 kW |
| Bore | 3.4 in | 87.0 mm |
| Displacement | 146.0 in³ | 2.4 l |
| Stroke | 4.0 in | 102.4 mm |
| Emissions | Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards. | Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards. |
| Gross Power - ISO 14396 | 41.8 HP | 31.2 kW |
Weights*
| Operating Weight | 11443.0 lb | 5185.0 kg |
| Weight - Canopy, Standard Stick | 10970.0 lb | 4975.0 kg |
| Note | *Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines. | *Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines. |
| Weight - Cab, Long Stick | 11443.0 lb | 5185.0 kg |
| Weight - Cab, Standard Stick | 11334.0 lb | 5140.0 kg |
| Weight - Canopy, Long Stick | 11069.0 lb | 5020.0 kg |
Travel System
| Maximum Traction Force - High Speed | 5418.0 lb | 24.1 kN |
| Maximum Traction Force - Low Speed | 10161.0 lb | 45.2 kN |
| Travel Speed - High | 2.7 mile/h | 4.4 km/h |
| Travel Speed - Low | 1.7 mile/h | 2.8 km/h |
| Gradeability - Maximum | 30° | 30° |
| Ground Pressure - Cab | 4.4 psi | 30.5 kPa |
| Ground Pressure - Canopy | 4.3 psi | 29.5 kPa |
Hydraulic System
| Auxiliary Circuit - Primary (186 bar/2,734 psi) | 21.1 gal/min | 80.0 l/min |
| Auxiliary Circuit - Secondary (174 bar/2,524 psi) | 6.6 gal/min | 25.0 l/min |
| Digging Force - Stick - Long | 4788.0 lb | 21.3 kN |
| Digging Force - Stick - Standard | 5550.0 lb | 24.7 kN |
| Operating Pressure - Equipment | 3553.0 psi | 245.0 bar |
| Operating Pressure - Swing | 3132.0 psi | 216.0 bar |
| Operating Pressure - Travel | 3553.0 psi | 245.0 bar |
| Pump Flow at 2,400 rpm | 39.6 gal/min | 150.0 l/min |
| Digging Force - Bucket | 10050.0 lb | 44.7 kN |
| Type | Load Sensing Hydraulics with Variable Displacement Piston Pump | Load Sensing Hydraulics with Variable Displacement Piston Pump |
Swing System
| Machine Swing Speed | 10.0 r/min | 10.0 r/min |
| Boom Swing - Left - With Stop* | 60° | 60° |
| Boom Swing - Left - Without Stop* | 80° | 80° |
| Boom Swing - Right | 50° | 50° |
| Note | *Automatic swing brake, spring applied, hydraulic release. | *Automatic swing brake, spring applied, hydraulic release. |
Blade
| Width | 78.0 in | 1980.0 mm |
| Height | 14.8 in | 375.0 mm |
| Dig Depth | 21.9 in | 555.0 mm |
| Lift Height | 15.9 in | 405.0 mm |
Service Refill Capacities
| Cooling System | 2.8 gal (US) | 10.5 l |
| Engine Oil | 2.5 gal (US) | 9.5 l |
| Hydraulic Tank | 18.0 gal (US) | 68.3 l |
| Fuel Tank | 16.6 gal (US) | 63.0 l |
| Hydraulic System | 20.6 gal (US) | 78.0 l |
Cab
| Dynamic Operator Sound Pressure Level (ISO 6396:2008) | 81.0 dB(A) | 81.0 dB(A) |
| Exterior Sound Power Level - ISO 6395:2008* | 96.0 dB(A) | 96.0 dB(A) |
| Note | *European Union Directive “2000/14/EC” | *European Union Directive “2000/14/EC” |
Certification - Cab and Canopy
| Roll Over Protective Structure (ROPS) | ISO 12117-2 | ISO 12117-2 |
| Tip Over Protective Structure (TOPS) | ISO 12117 | ISO 12117 |
| Top Guard | ISO 10262 (Level I) | ISO 10262 (Level I) |
Dimensions - Long Stick
| Boom Height - Shipping Position | 85.0 in | 2150.0 mm |
| Boom In Reach | 100.0 in | 2530.0 mm |
| Boom Swing - Left | 27.0 in | 695.0 mm |
| Boom Swing - Right | 31.0 in | 785.0 mm |
| Dig Depth | 144.0 in | 3670.0 mm |
| Maximum Blade Depth | 22.0 in | 555.0 mm |
| Maximum Blade Height | 16.0 in | 405.0 mm |
| Maximum Dig Height | 214.0 in | 5440.0 mm |
| Maximum Dump Clearance | 154.0 in | 3920.0 mm |
| Maximum Reach | 235.0 in | 5960.0 mm |
| Maximum Reach - Ground Level | 229.0 in | 5810.0 mm |
| O/A Shipping Height | 100.0 in | 2550.0 mm |
| O/A Shipping Length | 208.0 in | 5290.0 mm |
| O/A Track Width | 78.0 in | 1980.0 mm |
| O/A Undercarriage Length | 102.0 in | 2580.0 mm |
| Swing Bearing - Height | 24.0 in | 615.0 mm |
| Tail Swing | 43.0 in | 1100.0 mm |
| Track Belt/Shoe Width | 16.0 in | 400.0 mm |
| Vertical Wall | 104.0 in | 2630.0 mm |
Dimensions - Standard Stick
| Boom Height - Shipping Position | 69.0 in | 1750.0 mm |
| Boom In Reach | 93.0 in | 2350.0 mm |
| Boom Swing - Left | 27.0 in | 695.0 mm |
| Boom Swing - Right | 31.0 in | 785.0 mm |
| Dig Depth | 129.0 in | 3280.0 mm |
| Maximum Blade Depth | 22.0 in | 555.0 mm |
| Maximum Blade Height | 16.0 in | 405.0 mm |
| Maximum Dig Height | 207.0 in | 5250.0 mm |
| Maximum Dump Clearance | 129.0 in | 3720.0 mm |
| Maximum Reach | 220.0 in | 5600.0 mm |
| Maximum Reach - Ground Level | 210.0 in | 5330.0 mm |
| O/A Shipping Height | 100.0 in | 2550.0 mm |
| O/A Shipping Length | 204.0 in | 5180.0 mm |
| O/A Track Width | 78.0 in | 1980.0 mm |
| O/A Undercarriage Length | 102.0 in | 2580.0 mm |
| Swing Bearing - Height | 24.0 in | 615.0 mm |
| Tail Swing | 43.0 in | 1100.0 mm |
| Track Belt/Shoe Width | 16.0 in | 400.0 mm |
| Vertical Wall | 91.0 in | 2320.0 mm |
Lift Capacities at Ground Level - Lift Point Radius: 3000 mm (9'8”)
| Blade Down - Front | 5159.0 lb | 2340.0 kg |
| Blade Down - Side | 2646.0 in | 1200.0 kg |
| Blade Up - Front | 3197.0 lb | 1450.0 kg |
| Blade Up - Side | 2359.0 in | 1070.0 kg |
Lift Capacities at Ground Level - Lift Point Radius: 4000 mm (13'1”)
| Blade Down - Front | 2778.0 lb | 1260.0 kg |
| Blade Down - Side | 1411.0 lb | 640.0 kg |
| Blade Up - Front | 1676.0 lb | 760.0 kg |
| Blade Up - Side | 1257.0 lb | 570.0 kg |
Operating Specifications
| Stick Length - Long | 67.0 in | 1750.0 mm |
| Stick Length - Standard | 52.0 in | 1350.0 mm |
Undercarriage
| Number of Carrier Rollers | 3 | 3 |
| Number of Track Rollers | 3 | 3 |
| Track Roller Type | Triple Flange | Triple Flange |
