The Cat® 305 CR Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.
| Net Power | 45 hp |
| Operating Weight | 12688 lb |
| Dig Depth | 144.5 in |
| Net Power | 45 hp |
| Engine Model | C1.7 Turbo |
| Net Power – 2,400 rpm – ISO 9249, 80/1269/EEC | 45 hp |
| Gross Power – 2,400 rpm – SAE J1995:2014 | 48.4 hp |
| Bore | 3.3 in |
| Stroke | 3.9 in |
| Displacement | 101 in³ |
| Emissions | The Cat® C1.7 engine meets U.S. EPA Tier 4 Final and EU Stage V emission standards. |
| Note | Advertised power is tested per the specified standard in effect at the time of manufacture. |
| Note (2) | Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load. |
| Operating Weight | 12688 lb |
| Minimum Operating Weight with Canopy* | 11016 lb |
| Maximum Operating Weight with Canopy** | 12469 lb |
| Minimum Operating Weight with Cab* | 11234 lb |
| Maximum Operating Weight with Cab** | 12688 lb |
| Note (1) | *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight. |
| Note (2) | **Maximum Weight is based on steel tracks with pads, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket. |
| Dig Depth | 144.5 in |
| Vertical Wall | 100.8 in |
| Maximum Reach – Ground Level | 229.7 in |
| Maximum Reach | 235.8 in |
| Maximum Dig Height | 210.8 in |
| Maximum Dump Clearance | 151.4 in |
| Boom In Reach | 101.6 in |
| Tail Swing without Counterweight | 43.1 in |
| Tail Swing with Counterweight | 47.2 in |
| Maximum Blade Height | 15.2 in |
| Maximum Blade Depth | 23.4 in |
| Boom Height – Shipping Position | 74.6 in |
| O/A Shipping Height | 100.4 in |
| Swing Bearing – Height | 24.4 in |
| O/A Undercarriage Length | 101.6 in |
| Overall Shipping Length* | 210.2 in |
| Boom Swing – Right | 34.1 ° |
| Boom Swing – Left | 615 mm |
| Track Belt/Shoe Width | 15.7 in |
| Track Width | 78 in |
| Ground Clearance | 13.2 in |
| Stick Length | 63 in |
| Note | *Overall Shipping Length depends on blade position during shipment. |
| Air Conditioning | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1 |
| Operator Sound Pressure (ISO 6396:2008) | 76 dB(A) |
| Average Exterior Sound Pressure (ISO 6395:2008) | 97 dB(A) |
| Note | *The declared dynamic operator sound pressure levels per ISO 6396:2008. The measurements were conducted with the cab doors and windows closed. **The labeled sound power level for the CE marked configurations when measured according to the test procedure a |
| Recyclability | 96% |
| Counterweight | 534 lb |
| Long Stick | 75 lb |
| Steel Tracks with Pads | 827 lb |
| Angle Blade | 225 lb |
| Travel Speed – High | 3.1 mile/h |
| Travel Speed – Low | 1.7 mile/h |
| Maximum Traction Force – High Speed | 5553 lbf |
| Maximum Traction Force – Low Speed | 11353 lbf |
| Ground Pressure – Minimum Weight | 4 psi |
| Ground Pressure – Maximum Weight | 4.7 psi |
| Gradeability – Maximum | 30 degrees |
| Cooling System | 2.9 gal (US) |
| Engine Oil | 1.6 gal (US) |
| Fuel Tank | 17 gal (US) |
| Hydraulic Tank | 16 gal (US) |
| Hydraulic System | 20 gal (US) |
| Pump Flow at 2,400 rpm | 35 gpm |
| Operating Pressure – Equipment | 3843 psi |
| Operating Pressure – Travel | 3843 psi |
| Operating Pressure – Swing | 2901 psi |
| Auxiliary Circuit – Primary – Flow | 21 gpm |
| Auxiliary Circuit – Primary – Pressure | 3843 psi |
| Auxiliary Circuit – Secondary – Flow | 7 gpm |
| Auxiliary Circuit – Secondary – Pressure | 3843 psi |
| Digging Force – Stick – Standard | 6362 lbf |
| Digging Force – Stick – Long | 5665 lbf |
| Digging Force – Bucket | 11061 lbf |
| Note | Flow and pressure are not combinable. Under load, as flow rises pressure goes down. |
| Type | Load Sensing Hydraulics with Variable Displacement Piston Pump |
| Machine Swing Speed | 9 r/min |
| Boom Swing – Left | 72 Degrees |
| Boom Swing – Right | 50 Degrees |
| Straight Blade Width | 78 in |
| Straight Blade Height | 15.4 in |
| Angle Blade Width | 78 in |
| Angle Blade Height | 15.7 in |
| Angle Blade – Left | 25 degrees |
| Angle Blade – Right | 25 degrees |
| Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 |
| Top Guard | ISO 10262:1998 Level I |
| Dig Depth | 134.6 in |
| Vertical Wall | 91.9 in |
| Maximum Reach – Ground Level | 220.1 in |
| Maximum Reach | 226.6 in |
| Maximum Dig Height | 205.3 in |
| Maximum Dump Clearance | 145.7 in |
| Boom In Reach | 101.2 in |
| Tail Swing without Counterweight | 43.1 in |
| Tail Swing with Counterweight | 47.2 in |
| Maximum Blade Height | 15.2 in |
| Maximum Blade Depth | 23.4 in |
| Boom Height – Shipping Position | 71.7 in |
| O/A Shipping Height | 100.4 in |
| Swing Bearing – Height | 24.4 in |
| O/A Undercarriage Length | 101.6 in |
| Overall Shipping Length* | 208.9 in |
| Boom Swing – Right | 34.1 ° |
| Boom Swing – Left | 24.2 ° |
| Track Belt/Shoe Width | 15.7 in |
| Track Width | 78 in |
| Ground Clearance | 13.2 in |
| Stick Length | 53.2 in |
| Note | *Overall Shipping Length depends on blade position during shipment. |
| Cat® C1.7 Turbo Engine (U.S. EPA Tier 4 Final) |
| Automatic Engine Idle |
| Automatic Engine Shutdown |
| Automatic Two Speed Travel |
| Fuel Water Separator |
| Power on Demand (not available in all regions) |
| Variable Displacement Piston Pump |
| Load Sensing/Flow Sharing Hydraulics |
| Smart Tech Electronic Pump |
| Accumulator |
| Automatic Swing Brake |
| Auxiliary Hydraulic Lines |
| One and Two Way Auxiliary Flow |
| Continuous Auxiliary Flow |
| Auxiliary Line Quick Disconnects |
| ROPS ISO 12117-2:2008 |
| Top Guard ISO 10262:1998 (Level I) |
| Eco Drain |
| LED Front and Rear Lights |
| LED Boom Light |
| Canopy or Cab |
| Top Guard ISO 10262:1998 Level I |
| ROPS – ISO 12117-2:2008 |
| TOPS – ISO 12117:1997 |
| Stick Steer Mode |
| Travel Cruise Control |
| Control Pattern Changer (optional in some regions) |
| Adjustable Wrist Rests |
| Washable Floor Mat |
| Travel Pedals and Hand Levers |
| Machine Security |
| Machine Security – Standard Key with Pass Code |
| Fabric Suspension Seat (Cab only) |
| Vinyl Suspension Seat (Canopy only) |
| Hydraulic Lockout – All Controls |
| Retractable High Visibility Seat Belt (75 mm/3 in) |
| Coat Hook |
| Cup Holder |
| Storage Pocket |
| Skylight |
| Mounting Bosses for Front |
| Signaling/Warning Horn |
| Interior Light (Cab only) |
| Boom Light, Halogen (not available in all regions) |
| Utility Space for Mobile Phone |
| Next Generation Color LCD Monitor (IP66)– Fuel Level and Coolant Temperature Gauges– Maintenance and Machine Monitoring– Performance and Machine Adjustments– Numeric Security Code– Multiple Languages– Hour Meter with Wake Up Switch– Jog Dial (cab only) |
| Rubber Belt (400 mm/15.7 in) |
| Dozer Straight Blade |
| Dozer Blade Float |
| Tie Downs on Track Frame |
| One Piece Boom (2716 mm/106.9 in) |
| Standard Stick (1351 mm/53.2 in) |
| Front Shovel Capable – Pin-On |
| Thumb Ready |
| Certified Lifting Eye |
| 12 Volt Battery |
| Software (machine and monitor) |
| Maintenance Free Battery |
| Lock Out/Tag Out Battery Disconnect |
| 12 Volt Power Socket |
| Travel Alarm (optional in some regions) |
| Steel Track (400 mm/15.7 in) |
| Steel Track with Rubber Pads |
| Angle Blade |
| Long Stick (1601 mm/63.0 in) |
| Front Shovel Capable – Dual Lock Manual Coupler |
| Front Shovel Capable – Hydraulic Coupler |
| Attachments including Couplers, Thumbs, Buckets, Augers and Hammers |
| 2nd Auxiliary Hydraulic Lines |
| Bucket Divert Lines |
| Boom Lowering Check Valve |
| Stick Lowering Check Valve |
| Hydraulic Quick Coupler Lines |
| Product Link™ PL243 (regulations apply) |
| Product Link PLE643 (regulations apply) |
| Bio Oil Capable |
| Water Jacket Heater |
| Counterweight (242 kg/534 lb) |
| Cab with Air Conditioning |
| Cab with Heater |
| No Travel Pedals and Hand Levers (optional in some regions) |
| Machine Security – Push to Start with Key Fob/Pass Code |
| Mirrors, Left, Right and Rear |
| Camera |
| Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only) (Cab only) |
| Next Generation Advanced Monitor– Touch Screen– Site Reference System– High Definition Camera Capable (IP68 and IP69K)– Numeric Security Code |
| Seat Belt Reminder System |
| Cat Grade with Advanced 2D |
| Cat Grade with 3D |
| Top Guard ISO 10262:1998 (Level II) |
| Front Guard (Mesh) ISO 10262:1998 (Level I) |
| Front Guard (Heavy Duty) ISO 10262:1998 (Level II) |
