The Cat® 303.5 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
4190 kg
Dig Depth
3110 mm
Engine
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Net Power
17.6 kW
Engine Model
C1.7
Bore
84 mm
Net Power @ 2,200 rpm – U.S. EPA Tier 4 Final/EU Stage V – ISO 9249/EEC 80/1269
17.6 kW
Displacement
1.7 l
Note
Net power is tested per ISO 9249 and 80/1269/EEC.
Gross Power – 2,400 rpm – SAE J1995
18.4 kW
Emissions
Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Note (2)
Net power advertised is the power available at the flywheel when the engine is at rated speed and rated power when the engine is installed with the factory configured fan, air intake system, exhaust system, and alternator with a minimum alternator load.
Stroke
100 mm
Weights
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Operating Weight
4190 kg
Minimum Operating Weight with Canopy*
3480 kg
EU: CE Plate Weight with Cab***
3630 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 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 is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, bucket and no extra counterweight.
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
3110 mm
Track Belt/Shoe Width
300 mm
Maximum Reach
5510 mm
O/A Track Width
1780 mm
Maximum Blade Depth
535 mm
Tail Swing without Counterweight
890 mm
Stick Length
1560 mm
Swing Bearing – Height
565 mm
Boom Swing – Left
25.2 °
Overall Shipping Length*
4850 mm
Maximum Reach – Ground Level
5380 mm
Maximum Dump Clearance
3600 mm
Tail Swing with Counterweight
960 mm
O/A Shipping Height
2480 mm
Note
*Overall Shipping Length depends on blade position during shipment.
Boom In Reach
1860 mm
Maximum Dig Height
5020 mm
Vertical Wall
2390 mm
Boom Height – Shipping Position
1750 mm
Maximum Blade Height
385 mm
O/A Undercarriage Length
2220 mm
Boom Swing – Right
870 mm
Ground Clearance
310 mm
Blade
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Height
350 mm
Width
1780 mm
Dimensions – Standard Stick
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Boom Swing – Right
870 mm
Tail Swing with Counterweight
960 mm
Stick Length
1260 mm
Maximum Reach – Ground Level
5130 mm
Boom Swing – Left
640 mm
Maximum Reach
5270 mm
Track Belt/Shoe Width
300 mm
Maximum Dump Clearance
3490 mm
Swing Bearing – Height
565 mm
Boom Height – Shipping Position
1520 mm
O/A Shipping Height
2480 mm
Overall Shipping Length*
4800 mm
Boom In Reach
1760 mm
Note
*Overall Shipping Length depends on blade position during shipment.
Tail Swing with Extra Counterweight
1005 mm
Maximum Dig Height
4920 mm
Vertical Wall
2250 mm
Dig Depth
2810 mm
O/A Undercarriage Length
2220 mm
Tail Swing without Counterweight
890 mm
Maximum Blade Depth
535 mm
Maximum Blade Height
385 mm
Ground Clearance
310 mm
Weight Increase from Minimum Configuration
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Cab
140 kg
Counterweight
100 kg
Steel Tracks
130 kg
Long Stick
20 kg
Angle Blade
160 kg
Extra Counterweight
250 kg
Service Refill Capacities
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Fuel Tank
45 l
Hydraulic Tank
20 l
Cooling System
7 l
Engine Oil
6 l
Hydraulic System
45 l
Travel System
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Ground Pressure – Minimum Weight
29.6 kPa
Maximum Traction Force – High Speed
16.9 kN
Maximum Traction Force – Low Speed
31 kN
Travel Speed – High
4.5 km/h
Gradeability – Maximum
30 degrees
Travel Speed – Low
2.6 km/h
Ground Pressure – Maximum Weight
35.7 kPa
Hydraulic System
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Pump Flow at 2,400 rpm
100 l/min
Auxiliary Circuit – Primary – Flow
70 l/min
Operating Pressure – Swing
181 bar
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Auxiliary Circuit – Secondary – Pressure
245 bar
Digging Force – Stick – Long
16.9 kN
Auxiliary Circuit – Secondary – Flow
25 l/min
Digging Force – Bucket
33 kN
Operating Pressure – Travel
245 bar
Operating Pressure – Equipment
245 bar
Auxiliary Circuit – Primary – Pressure
245 bar
Digging Force – Stick – Standard
18.9 kN
Note
*Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Sound
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Note
European Union Directive ‚ “2000/14/EC”
Operator Sound Pressure (ISO 6396:2008)
78 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
94 dB(A)
Swing System
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Machine Swing Speed
9 r/min
Boom Swing – Right
50 °
Boom Swing – Left
75 °
Dimensions (Approximate) – Standard Stick
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Tail Swing with Extra Counterweight
1005 mm
Certification – Cab and Canopy
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Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997
Top Guard
ISO 10262:1998 (Level I)
Dimensions (Approximate) – Long Stick
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Tail Swing with Extra Counterweight
1005 mm
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 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.
SUSTAINABILITY
The Cat® C1.7 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)
Cat Grade with advanced 2D and 3D technologies combine advanced guidance with optional automated machine control helping you reach grading targets while reducing fuel burn and greenhouse gas emissions by improving efficiency, job site productivity, and accuracy. (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)
303.5 CR Standard Equipment
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ENGINE
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Cat C1.7 NA 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
OPERATOR ENVIRONMENT
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Tilt-up Canopy or Tilt-Up 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
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)
Next Generation Advanced Monitor (Optional)
– 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
UNDERCARRIAGE
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Rubber Belt (300 mm/11.8 in wide)
Dozer Blade
Dozer Blade Float
Angle Blade
Tie Downs on Track Frame
BOOM, STICK AND LINKAGES
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One Piece Boom (2400 mm/94.5 in)
Standard Stick (1260 mm/49.6 in)
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
303.5 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)
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)
Front Shovel Capable – Hydraulic Coupler
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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Guard, Canopy
Guard, Mesh
OTHER
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Bio Oil Capable
Eco Drain
Water Jacket Heater
