Cat 303-07CR
Mini-Excavators
- Sensitive hydraulics allow the shortest work cycles
- Highest breakout and lifting forces
- Unrivaled cabin comfort with the best possible overview
- Unprecedented accessibility for maintenance and service
- Stage V engine without particulate filter
- Maximum material handling with the lowest diesel consumption
- Choose either a canopy or a sealed and pressurized cab which can be equipped with air conditioning, adjustable wrist rests, and a suspension seat option to help keep you working comfortably all day long.
EASY TO OPERATE
- Controls are easy to use and the intuitive Next Generation LCD monitor provides easy to read machine information. An advanced touchscreen monitor can also be equipped.
STICK STEER TRAVEL MODE
- Moving around the job site is even easier with the Cat Stick Steer option. Easily switch from traditional travel controls with levers and pedals to joystick controls to move the machine and to operate the blade. The benefit of less effort and improved control is in your hands!
BIG PERFORMANCE IN A COMPACT DESIGN
- Strong lift and dig performance helps you get the job done faster. The compact radius design lets you access and work in the tightest areas. Dozer float allows for easy clean up.
SAFETY ON THE JOB SITE
- Your safety is our top priority. The Cat mini excavator is designed to help keep you safe on the job. Courtesy work lights and a fluorescent retractable seat belt with optional seat belt reminder system are just a couple of the safety features we’ve built into the machine.
SIMPLE SERVICE FOR LESS DOWNTIME
- Maintenance is quick and easy on the Cat mini excavator. Routine check points are easy to access at ground level through the side doors. The unique tilt up cab or canopy lets you reach additional service areas when needed.
LOWER OPERATING COSTS
- Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat mini excavator was designed with reducing your operating costs in mind.
UNMATCHED DEALER SUPPORT
- Your Cat dealer is here to help you reach your business goals. From providing equipment solutions to operator training to service needs and beyond, your Cat dealer is ready to help.
SUSTAINABILITY
- The Cat® C1.1 engine meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
- Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester) * or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
- Auto Idle helps reduce unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
- Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.
- Cruise control helps you maintain a constant speed as you travel across your jobsite saving fuel and reducing greenhouse gas emissions.
- The Cat® Seat Belt Reminder provides audible and visual warnings to remind operators to buckle up during machine operation. The easy-to-install system is compatible with all equipment brands to help ensure operator safety.
- Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
- Remote Flash minimizes downtime and maintenance time while keeping your asset running with maximum efficiency. Alerts for machine updates are sent virtually from your Cat dealer and updates can be deployed without a dealer technician needing to be onsite.(if equipped)
- Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency by allowing your Cat dealer to virtually test the machine while working. Once a problem is identified, a technician can fix it the first time, saving time and money.(if equipped)
*Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel. (for use of blends higher than 20% biodiesel, consult your Cat dealer)
Air Conditioning System
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 (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe). |
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Blade
Width | 1550 mm |
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Height | 350 mm |
Certification - Cab and Canopy
Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 |
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Tip Over Protective Structure (TOPS) | ISO 12117:1997 |
Top Guard | ISO 10262:1998 (Level I) |
Dimensions - Long Stick
Dig Depth | 2950 mm |
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Vertical Wall | 2070 mm |
Maximum Reach - Ground Level | 5110 mm |
Maximum Reach | 5240 mm |
Maximum Dig Height | 4650 mm |
Maximum Dump Clearance | 3310 mm |
Boom In Reach | 1910 mm |
Tail Swing without Counterweight | 775 mm |
Tail Swing - with Extra Counterweight | 890 mm |
Maximum Blade Depth | 535 mm |
Maximum Blade Height | 385 mm |
Boom Height - Shipping Position | 1920 mm |
O/A Shipping Height | 2480 mm |
Swing Bearing - Height | 570 mm |
O/A Undercarriage Length | 2070 mm |
Overall Shipping Length* | 4560 mm |
Boom Swing - Right | 870 mm |
Boom Swing - Left | 640 mm |
Track Belt/Shoe Width | 300 mm |
Track Width | 1550 mm |
Stick Length | 1560 mm |
Minimum Ground Clearance Below Undercarriage | 310 mm |
Note | *Overall Shipping Length depends on blade position during shipment. |
Dimensions - Standard Stick
Dig Depth | 2650 mm |
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Vertical Wall | 1820 mm |
Maximum Reach - Ground Level | 4830 mm |
Maximum Reach | 4980 mm |
Maximum Dig Height | 4510 mm |
Maximum Dump Clearance | 3170 mm |
Boom In Reach | 1750 mm |
Tail Swing without Counterweight | 775 mm |
Tail Swing with Extra Counterweight | 890 mm |
Maximum Blade Depth | 535 mm |
Maximum Blade Height | 385 mm |
Boom Height - Shipping Position | 1600 mm |
O/A Shipping Height | 2480 mm |
Swing Bearing - Height | 570 mm |
O/A Undercarriage Length | 2070 mm |
Overall Shipping Length* | 4510 mm |
Boom Swing - Right | 870 mm |
Boom Swing - Left | 640 mm |
Track Belt/Shoe Width | 300 mm |
Minimum Ground Clearance Below Undercarriage | 310 mm |
Stick Length | 1260 mm |
Note | *Overall Shipping Length depends on blade position during shipment. |
Engine
Net Power | 17.6 kW |
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Engine Model | C1.1 Turbo |
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC | 17.6 kW |
Net Power - ISO 9249 | 18.4 kW |
Bore | 77 mm |
Stroke | 81 mm |
Displacement | 1.1 l |
Emissions | 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 (1) | Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load. |
Hydraulic System
Type | Load Sensing Hydraulics with Variable Displacement Piston Pump |
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Pump Flow at 2,400 rpm | 100 L/min |
Operating Pressure - Equipment | 245 bar |
Operating Pressure - Travel | 245 bar |
Operating Pressure - Swing | 176 bar |
Auxiliary Circuit - Primary - Flow | 65 L/min |
Auxiliary Circuit - Primary - Pressure | 245 bar |
Auxiliary Circuit - Secondary - Flow | 25 L/min |
Auxiliary Circuit - Secondary - Pressure | 245 bar |
Digging Force - Stick - Standard | 16.6 kN |
Digging Force - Stick - Long | 14.8 kN |
Digging Force - Bucket | 28.4 kN |
Note | * Flow and pressure are not combinable. Under load, as flow rises pressure goes down. |
Service Refill Capacities
Cooling System | 4 l |
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Engine Oil | 4 l |
Fuel Tank | 45 l |
Hydraulic Tank | 18 l |
Hydraulic System | 35 l |
Sound
Operator Sound Pressure (ISO 6396:2008) | 78 dB(A) |
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Average Exterior Sound Pressure (ISO 6395:2008) | 94 dB(A) |
Note | European Union Directive “2000/14/EC” |
Sustainability
Recyclability | 95% |
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Swing System
Machine Swing Speed | 9 r/min |
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Boom Swing - Left | 75 ° |
Boom Swing - Right | 50 ° |
Travel System
Travel Speed - High | 4.5 km/h |
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Travel Speed - Low | 2.6 km/h |
Maximum Traction Force - High Speed | 14.7 kN |
Maximum Traction Force - Low Speed | 31.4 kN |
Ground Pressure - Minimum Weight | 27.6 kPa |
Ground Pressure - Maximum Weight | 32.3 kPa |
Gradeability - Maximum | 30 degrees |
Weight Increase from Minimum Configuration
Cab | 115 kg |
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Counterweight | 100 kg |
Extra Counterweight | 250 kg |
Long Stick | 25 kg |
Steel Tracks | 125 kg |
Weights
Operating Weight | 3545 kg |
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Minimum Operating Weight with Canopy* | 3025 kg |
Maximum Operating Weight with Canopy** | 3425 kg |
Minimum Operating Weight with Cab* | 3140 kg |
Maximum Operating Weight with Cab** | 3545 kg |
EU: CE Plate Weight with Canopy*** | 3080 kg |
EU: CE Plate Weight with Cab*** | 3180 kg |
Note (1) | *Minimum Weight is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, no bucket and extra counterweight. |
Note (2) | **Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, no bucket and extra counterweight. |
Note (3) | ***CE Plate Weight is based on the most common EU configuration. Includes 75 kg (165 lb) operator and full fuel tank and excludes bucket. |