Contact Us
Excavators 303.5 CR
Request a QuoteKey Information
Net Power
17.6 kW
Operating weight
4,190 kg
Maximum digging depth
3,110 mm
Overview
Hydraulic Mini Excavators Inspired By Our Customers
The compact size CAT® 303.5 CR hydraulic mini excavator provides maximum power and performance to allow you to work in a wide range of applications.
Advantages4 Unmatched Features On The Market
Cat exclusives in a mini hydraulic excavator
Up to 5% Reduction in Total Cost of Ownership
thanks to more common parts, lower repair costs, and a tiltable cabin
Up to 10% More Performance
thanks to programmable driver settings and faster cycle times
Key Features
- Unlimited Comfort
- Ease of use
- Arm Direction Translation Mode
- Exceptional Performances in a Compact Format
- Safety On The Construction Site
- Reduced Operating Costs
- Durability
Unlimited Comfort
Choose between a roof or a sealed and pressurized cabin that can be equipped with an air conditioning system, adjustable armrests, and an optional suspension seat to help you work comfortably throughout the day.
Ease of use
The commands are easy to use and the intuitive new generation LCD monitor provides easy-to-read information about the machine. An advanced touch screen monitor can also be equipped.
Arm Direction Translation Mode
It is even easier to move around the construction site thanks to the Cat arm steering option. Easily switch from traditional translation commands with levers and pedals to joystick controls to move the machine and operate the blade. Less effort and better control are within reach!
Exceptional Performances in a Compact Format
Powerful lifting and digging performances allow you to complete the work more quickly. The compact design of the radius allows you to access the tightest spaces and work in them. The free position of the push blade makes it easier to clean.
Safety On The Construction Site
Your safety is our priority. The Cat hydraulic mini excavator is designed to ensure your safety on the construction site. Among the safety features we have integrated into the machine are courtesy lamps and a fluorescent retractable seat belt.
Reduced Operating Costs
Equipped with features such as automatic idle, automatic engine shutdown, and a high-performance hydraulic circuit with a variable displacement pump, the Cat hydraulic mini excavator has been designed to reduce your operating costs.
Durability
The C1.7 CAT® Engine complies with EPA Tier 4 Final emissions standards for the United States, Stage V for the European Union, and 2014 for Japan. Cat diesel engines must use ULSD (Ultra Low Sulfur Diesel, diesel with a sulfur content of 15 ppm or less) or ULSD diesel blended with the following low carbon intensity fuels, up to: 20%* FAME biodiesel (fatty acid methyl ester) or 100% renewable diesel, HVO (hydrogenated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to the guidelines for successful application. Please contact your Cat dealer or refer to the special publication SEBU6250 Caterpillar Machine Fluids Recommendations. The automatic idle shutdown reduces unnecessary fuel consumption and greenhouse gas emissions by automatically switching the engine to idle mode when the machine is not in use. The engine idle shutdown timer stops the machine after a predefined idle period to save fuel and reduce unnecessary downtime. The speed control allows you to maintain a constant speed while moving on the job site, saving fuel and reducing greenhouse gas emissions. The CAT® seat belt reminder provides the driver with audible and visual warnings to remind them to fasten their seat belt during machine operation. The easy-to-install system is compatible with all equipment brands to better ensure driver safety. Extended maintenance intervals not only reduce downtime but also decrease the amount of fluid and filters replaced over the machine's lifetime. Remote updates reduce downtime and maintenance time while keeping your resources operating at peak performance. Machine update alerts are sent virtually by your Cat dealer, and updates can be performed without the presence of a dealer technician on-site. (Depending on equipment) Remote troubleshooting reduces maintenance time and keeps the machine operating at peak performance by allowing your Cat dealer to virtually test the machine during operation. Once a problem is identified, a technician can resolve it immediately, saving time and money. (Depending on equipment) Cat Grade technologies with Advanced 2D and 3D modules combine advanced guidance with optional automated machine control to help you achieve grading goals while reducing fuel consumption and greenhouse gas emissions through improved efficiency, on-site productivity, and accuracy. (Depending on equipment). *Engines without aftertreatment devices can use higher blends, up to 100% biodiesel. (For use of blends exceeding 20% biodiesel, consult your Cat dealer)
Product Specifications for 303.5 CR
- ENGINE
- Net Power17.6 kW
- Engine ModelC1.7
- Bore84 mm
- Net Rated Power at 2200 RPM - EPA Tier 4 Final for U.S./Stage V for EU - ISO 9249/CEE 80/126917.6 kW
- Displacement1.7 l
- NoteNet power is tested following ISO 9249 and 80/1269/CEE standards.
- Gross Power - 2400 RPM - SAE J199518.4 kW
- EmissionsComplies with U.S. EPA Tier 4 Final and EU Stage V emission standards.
- Note (2)Advertised net power is the power available at the flywheel when the engine is at rated RPM and at the rated power with the factory-installed fan, air intake, exhaust system, and alternator with a minimum alternator load.
- Stroke100 mm
- WEIGHT
- Operating Weight4190 kg
- Minimum Operating Weight with Canopy*3480 kg
- EU: CE Plate Weight with Cab***3630 kg
- Note (3)***The CE Plate Weight is established in the most common EU configuration. It includes the weight of a 75 kg (165 lb) operator and a full fuel tank, without bucket.
- Maximum Operating Weight with Cab**4190 kg
- Maximum Operating Weight with Canopy**4050 kg
- EU: CE Plate Weight with Canopy***3530 kg
- Minimum Operating Weight with Cab*3620 kg
- Note (1)*Minimum weight includes fixed rubber tracks, operator weight, full fuel tank, standard arm, blade, bucket, but no additional counterweight.
- Note (2)**Maximum weight includes steel tracks, operator weight, full fuel tank, long arm, blade, bucket, and additional counterweight.
- DIMENSIONS - LONG ARM
- Digging Depth3110 mm
- Track/Pad Width300 mm
- Maximum Reach5510 mm
- Overall Track Width1780 mm
- Maximum Blade Depth535 mm
- Rear End Swing Clearance890 mm
- Arm Length1560 mm
- Upperstructure Clearance - Height565 mm
- Boom Swing - Left25.2 °
- Overall Shipping Length*4850 mm
- Maximum Reach - Ground Level5380 mm
- Maximum Dump Height3600 mm
- Rear End Swing Clearance with Counterweight960 mm
- Overall Shipping Height2480 mm
- Note*Overall shipping length depends on blade position during shipping.
- Boom Reach1860 mm
- Maximum Digging Height5020 mm
- Vertical Wall2390 mm
- Boom Height - Shipping Position1750 mm
- Maximum Blade Height385 mm
- Overall Track Length2220 mm
- Boom Swing - Right870 mm
- Ground Clearance310 mm
- BLADE
- Height350 mm
- Width1780 mm
- DIMENSIONS - STANDARD ARM
- Boom Swing - Right870 mm
- Rear End Swing Clearance with Additional Counterweight1005 mm
- Arm Length1260 mm
- Maximum Reach - Ground Level5130 mm
- Boom Swing - Left640 mm
- Maximum Reach5270 mm
- Track/Pad Width300 mm
- Maximum Dump Height3490 mm
- Upperstructure Clearance - Height565 mm
- Boom Height - Shipping Position1520 mm
- Overall Shipping Height2480 mm
- Overall Shipping Length*4800 mm
- Boom Reach1760 mm
- Note*Overall shipping length depends on blade position during shipping.
- Rear End Swing Clearance with Additional Counterweight1005 mm
- Maximum Digging Height4920 mm
- Vertical Wall2250 mm
- Digging Depth2810 mm
- Overall Track Length2220 mm
- Rear End Swing Clearance890 mm
- Maximum Blade Depth535 mm
- Maximum Blade Height385 mm
- Ground Clearance310 mm
- ADDITIONAL WEIGHT INCREASE FROM MINIMUM CONFIGURATION
- Canopy140 kg
- Counterweight100 kg
- Steel Tracks130 kg
- Long Arm20 kg
- Swing Boom160 kg
- Additional Counterweight250 kg
- MAINTENANCE CAPACITIES
- Fuel Tank45 l
- Hydraulic Tank20 l
- Cooling System7 l
- Engine Oil6 l
- Hydraulic Circuit45 l
- TRAVEL SYSTEM
- Ground Pressure - Minimum Weight29.6 kPa
- Maximum Drawbar Pull - High Speed16.9 kN
- Maximum Drawbar Pull - Low Speed31 kN
- Travel Speed - High4.5 km/h
- Gradeability - Maximum30°
- Travel Speed - Low2.6 km/h
- Ground Pressure - Maximum Weight35.7 kPa
- HYDRAULIC SYSTEM
- Pump Flow at 2400 RPM100 l/min
- Auxiliary Circuit - Main - Flow70 l/min
- Operating Pressure - Swing181 bar
- TypeLoad-sensing hydraulic circuit with variable-displacement piston pump
- Auxiliary Circuit - Secondary - Pressure245 bar
- Digging Force - Arm - Long16.9 kN
- Auxiliary Circuit - Secondary - Flow25 l/min
- Digging Force - Bucket33 kN
- Operating Pressure - Travel245 bar
- Operating Pressure - Equipment245 bar
- Auxiliary Circuit - Main - Pressure245 bar
- Digging Force - Arm - Standard18.9 kN
- Note*Flow and pressure cannot be combined. As flow increases, pressure decreases.
- SOUND LEVELS
- NoteEuropean Union Directive "2000/14/EC"
- Sound Pressure Level (ISO 6396:2008)78 dB(A)
- Average Sound Pressure Level (ISO 6395:2008)94 dB(A)
- SWING SYSTEM
- Swing Speed9 RPM
- Boom Swing - Right50 °
- Boom Swing - Left75 °
- DIMENSIONS (APPROXIMATE): STANDARD ARM
- Rear End Swing Clearance with Additional Counterweight1005 mm
- CERTIFICATION - CAB AND CANOPY
- Roll-Over Protective Structure (ROPS)ISO 12117-2:2008
- Top Guard (TOPS)ISO 12117:1997
- Top Guard LevelISO 10262:1998 (Level I)
- DIMENSIONS (APPROXIMATE): LONG ARM
- Rear End Swing Clearance with Additional Counterweight1005 mm
Standard Equipment for 303.5 CR
-
ENGINE
- C1.7 Cat Atmospheric Engine (compliant with EPA Tier 4 Final standards for the United States/EU Stage V)
- Automatic Engine Idle
- Automatic Engine Shutdown
- Two-Speed Automatic Travel
- Water/Fuel Separator
- Power-On-Demand (not available in all regions)
- Variable Displacement Piston Pump
- Flow-Sharing/Load-Sensing Hydraulic System
-
HYDRAULIC SYSTEM
- Smart Electronic Pump
- Accumulator
- Automatic Swing Brake
- Auxiliary Hydraulic Lines
- Single/Bi-Directional Auxiliary Flow
- Continuous Auxiliary Flow
- Quick Disconnect Couplings for Auxiliary Lines
-
DRIVER'S COMPARTMENT
- Adjustable Roof and ROPS Cab
- ISO 10262:1998 Level I Top Guard
-
TOPS - ISO 12117:1997
- Boom Direction Mode
- Travel Speed Control
- Control Pattern Switch (option in some regions)
- Adjustable Wrist Rests
- Washable Floor Mat
- Travel Joysticks and Pedals
- Machine Security
- Machine Security - Standard Key with Passcode
- Fabric Suspended Seat (Cab Only)
- Vinyl Suspended Seat (Roof Only)
- Hydraulic Lock - All Controls
- High Visibility Retractable Seat Belt (75 mm/3 in)
- Coat Hook
- Cup Holder
- Storage Compartment
- Full-Sky Roof
- Mounting Bosses for Front Attachments
- Warning/Hazard Horn
- Boom-Mounted Work Light, Halogen
- Cell Phone Holder
- New Generation Color LCD Monitor (IP66)
- Fuel and Coolant Temperature Gauges
- Maintenance and Machine Monitoring
- Performance and Machine Settings
- Numeric Security Code
- Multiple Languages
- Maintenance Meter with Activation Switch
- Rotary Switch (Cab Only)
- Advanced Next-Generation Monitor (optional)
- Fuel Level and Coolant Temperature Gauges
- Maintenance and Machine Monitoring
- Performance and Machine Settings
- Numeric Security Code
- Multiple Languages
- Maintenance Meter with Activation Switch
-
UNDERCARRIAGE
- Rubber Tracks (300 mm/11.8 in wide)
- Blade
- Free-Swinging Blade
- Angle Blade
- Tie-Downs on Frame
-
BOOM, ARM, AND LINKAGES
- Monobloc Boom (2,400 mm/94.5 in)
- Standard Arm (1,260 mm/49.6 in)
- Backhoe Option - Pin-On
- Grapple Ready (not available in all regions)
- Certified Lifting Eye (optional in some regions)
-
ELECTRICAL EQUIPMENT
- 12-Volt Battery
- Software (Machine and Monitor)
- Maintenance-Free Battery
- Warning/Signal Horn
- 12-Volt Power Outlet
Available Options for 303.5 CR
-
DRIVER'S COMPARTMENT
- Cab with Air Conditioning
- Cab with Heating
- Control Grid Switch (option in certain regions)
- Translation Levers and Pedals Not Available
- Machine Security - Push-Button with Key/Passcode
- Vinyl Seat without Suspension (roof only)
- LED Front Lights
- LED Front and Rear Lights
- LED Boom-Mounted Spotlight
- Left and Right Mirrors
- Radio - Bluetooth®, Auxiliary, Microphone, USB (charging only) (cab only)
-
UNDERCARRIAGE
- Steel Tracks (300 mm/11.8 in wide)
-
BOOM, ARM, AND LINKAGES
- Long Arm (1,560 mm/61.4 in)
- Beautiful Hill Option - Manual Dual Lock Coupler
- Equipment including Buckets, Clamps, Grapples, Augers, and Hammers
- 2nd Auxiliary Hydraulic Circuit
- Boom Lowering Check Valve
- Arm Lowering Check Valve
- Hydraulic Quick Coupler Lines (not available in all regions)
- Beautiful Hill Capability - Hydraulic Coupler
-
ELECTRICAL EQUIPMENT
- Battery Isolator
- Product Link PL243 (as required by regulations)
- Product Link PLE643 (as required by regulations)
- Travel Alarm (standard in some regions)
-
GUARDS
- Roof Guard
- Mesh Guard
-
OTHER
- Biodegradable Oil Compatibility
- Environmental Drain
- Water Jacket Heater
Media Gallery
Discover Similar Equipment
Excavators
320 (tier 3)
Net Power - ISO 9249
117 kW
Operating weight
21,300 kg
Maximum digging depth
6,720 mm
ExploreExcavators
323 GX
Net Power - ISO 9249
123.7 kW
Operating weight
22,100 kg
Maximum digging depth
6,710 mm
ExploreExcavators
320 GC
Net Power - ISO 9249
107 kW
Operating weight
20,300 kg
Maximum digging depth
6,630 mm
ExploreExcavators
345 GC
Net Power - ISO 9249
258 kW
Operating weight
42,200 kg
Maximum digging depth
7,200 mm
Explore