The Cat® 303 CR Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.
Net Power
17.6 kW
Operating Weight
3545 kg
Dig Depth
2950 mm
Product specifications for 303 CR Mini Excavators
Engine
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Net Power
17.6 kW
Engine Model
C1.1 Turbo
Bore
77 mm
Net Power – 2,400 rpm – ISO 9249, 80/1269/EEC
17.6 kW
Emissions
Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Stroke
81 mm
Note
Advertised power is tested per the specified standard in effect at the time of manufacture.
Displacement
1.1 l
Gross Power – 2,400 rpm – SAE J1995:2014
18.4 kW
Weights
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Operating Weight
3545 kg
Note (1)
*Minimum Weight is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, bucket and no extra counterweight.
EU: CE Plate Weight with Canopy***
3080 kg
Minimum Operating Weight with Canopy*
3025 kg
Minimum Operating Weight with Cab*
3140 kg
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.
Maximum Operating Weight with Canopy**
3425 kg
EU: CE Plate Weight with Cab***
3180 kg
Maximum Operating Weight with Cab**
3545 kg
Note (2)
**Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, bucket and extra counterweight.
Dimensions – Long Stick
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Dig Depth
2950 mm
Boom Height – Shipping Position
1920 mm
Tail Swing with Counterweight
890 mm
Track Belt/Shoe Width
300 mm
Maximum Reach
5240 mm
Boom In Reach
1910 mm
Boom Swing – Right
870 mm
Tail Swing
845 mm
Maximum Dump Clearance
3310 mm
Ground Clearance
310 mm
O/A Undercarriage Length
2070 mm
O/A Shipping Height
2480 mm
Track Width – Expanded
1550 mm
Maximum Blade Depth
535 mm
Maximum Reach – Ground Level
5110 mm
Stick Length
1560 mm
Overall Shipping Length*
4560 mm
Maximum Dig Height
4650 mm
Swing Bearing – Height
570 mm
Note
*Overall Shipping Length depends on blade position during shipment.
Tail Swing without Counterweight
775 mm
Maximum Blade Height
385 mm
Boom Swing – Left
640 mm
Vertical Wall
2070 mm
Blade
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Height
350 mm
Width
1550 mm
Dimensions – Standard Stick
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Maximum Blade Depth
535 mm
Tail Swing without Counterweight
775 mm
Maximum Dig Height
4510 mm
O/A Undercarriage Length
2070 mm
Boom Height – Shipping Position
1600 mm
Vertical Wall
1820 mm
Overall Shipping Length*
4510 mm
Boom Swing – Left
640 mm
O/A Shipping Height
2480 mm
Track Shoe Width
1550 mm
Boom Swing – Right
870 mm
Tail Swing with Extra Counterweight
890 mm
Swing Bearing – Height
570 mm
Tail Swing
845 mm
Maximum Blade Height
385 mm
Dig Depth
2650 mm
Maximum Dump Clearance
3170 mm
Maximum Reach – Ground Level
4830 mm
Maximum Reach
4980 mm
Ground Clearance
310 mm
Track Belt/Shoe Width
300 mm
Boom In Reach
1750 mm
Stick Length
1260 mm
Note
*Overall Shipping Length depends on blade position during shipment.
Swing System
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Boom Swing – Right
50 °
Machine Swing Speed
9 r/min
Boom Swing – Left
75 °
Sound
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Average Exterior Sound Pressure (ISO 6395:2008)
94 dB(A)
Operator Sound Pressure (ISO 6396:2008)
78 dB(A)
Note
European Union Directive “2000/14/EC”
Hydraulic System
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Auxiliary Circuit – Primary – Flow
65 l/min
Auxiliary Circuit – Secondary – Pressure
245 bar
Operating Pressure – Swing
176 bar
Pump Flow at 2,400 rpm
100 l/min
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force – Stick – Standard
16.6 kN
Operating Pressure – Travel
245 bar
Digging Force – Bucket
28.4 kN
Operating Pressure – Equipment
245 bar
Auxiliary Circuit – Primary – Pressure
245 bar
Auxiliary Circuit – Secondary – Flow
25 l/min
Digging Force – Stick – Long
14.8 kN
Note
* Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Travel System
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Gradeability – Maximum
30 degrees
Ground Pressure – Maximum Weight
32.3 kPa
Ground Pressure – Minimum Weight
27.6 kPa
Travel Speed – High
4.5 km/h
Maximum Traction Force – Low Speed
31.4 kN
Travel Speed – Low
2.6 km/h
Maximum Traction Force – High Speed
14.7 kN
Service Refill Capacities
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Cooling System
4 l
Hydraulic Tank
18 l
Engine Oil
4 l
Fuel Tank
45 l
Hydraulic System
35 l
Weight Increase from Minimum Configuration
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Counterweight
100 kg
Cab
115 kg
Steel Tracks
125 kg
Long Stick
25 kg
Extra Counterweight
250 kg
Certification – Cab and Canopy
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Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Top Guard
ISO 10262:1998 (Level I)
Tip Over Protective Structure (TOPS)
ISO 12117:1997
Sustainability
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Recyclability
95%
ALL DAY COMFORT
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)
303 CR Standard Equipment
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ENGINE
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Cat C1.1 Turbo Engine (U.S. EPA Tier 4 Final/EU Stage V)
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
HYDRAULICS
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Smart Tech Electronic Pump
Accumulator
Automatic Swing Brake
Auxiliary Hydraulic Lines
One and Two Way Auxiliary Flow
Continuous Auxiliary Flow
Auxiliary Line Quick Disconnects
GUARDING
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Top Guard ISO 10262:1998 Level I
OPERATOR ENVIRONMENT
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Tilt-up Canopy or Tilt-Up Cab
ROPS – ISO 12117-2:2008
TOPS – ISO 12117:1997
Next Generation Advanced Monitor
– Touch Screen
– Site Reference System
– High Definition Camera Capable (IP68 and IP69K)
– Numeric Security Code
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
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)
UNDERCARRIAGE
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Rubber Belt (300 mm/11.8 in wide)
Dozer Blade
Dozer Blade Float
Tie Downs on Track Frame
BOOM, STICK AND LINKAGES
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One Piece Boom (2200 mm/86.6 in)
Standard Stick (1260 mm/49.6 in)
Front Shovel Capable – Hydraulic Coupler
Front Shovel Capable – Pin-On
Thumb Ready (not available in all regions)
Certified Lifting Eye (optional in some regions)
ELECTRICAL
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12 Volt Battery
Software (machine and monitor)
Maintenance Free Battery
Signaling/Warning Horn
12 Volt Power Socket
303 CR Optional Equipment
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OPERATOR ENVIRONMENT
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Cab with Air Conditioning
Cab with Heater
Control Pattern Changer (optional in some regions)
No Travel Pedals and Hand Levers
Machine Security – Push to Start with Key Fob/Pass Code
Vinyl Non-Suspension Seat (Canopy only)
LED Front Lights
LED Front and Rear Lights
LED Boom Light
Mirrors Left and Right
Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only) (Cab only)
Seat Belt Reminder System
UNDERCARRIAGE
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Steel Track (300 mm/11.8 in wide)
BOOM, STICK AND LINKAGES
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Long Stick (1560 mm/61.4 in)
Front Shovel Capable – Dual Lock Manual Coupler
Attachments including Couplers, Thumbs, Buckets, Augers and Hammers
2nd Auxiliary Hydraulic Lines
Boom Lowering Check Valve
Stick Lowering Check Valve
Hydraulic Quick Coupler Lines (not available in all regions)
ELECTRICAL
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Battery Disconnect
Product Link PL243 (regulations apply)
Product Link PLE643 (regulations apply)
Travel Alarm (standard in some regions)
GUARDING
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Polycarbonate Front Guard (ISO 10262:1998 Level I and EN356 P5A)
Polycarbonate Half Height Front Guard (Canopy only)
OTHER
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Bio Oil Capable
Eco Drain
Water Jacket Heater
