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303.5 CR

Mini Excavators

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.

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Net Power 17.6 kW
Operating Weight 4190 kg
Dig Depth 3110 mm
Engine Model C1.7
Availability Please Call Admin
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303.5 CR
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OVERVIEW

Mini Excavators Inspired by Our Customers

FEATURES & BENEFITS

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... Read more

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. Read more

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 m... Read more

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 c... Read more

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 jus... Read more

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... Read more

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 reduc... Read more

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... Read more

SPECIFICATIONS FOR 303.5 CR

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Engine
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
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
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
Height 350 mm
Width 1780 mm
Dimensions - Standard Stick
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
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
Fuel Tank 45 l
Hydraulic Tank 20 l
Cooling System 7 l
Engine Oil 6 l
Hydraulic System 45 l
Travel System
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
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
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
Machine Swing Speed 9 r/min
Boom Swing - Right 50 °
Boom Swing - Left 75 °
Dimensions (Approximate) - Standard Stick
Tail Swing with Extra Counterweight 1005 mm
Certification - Cab and Canopy
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
Tail Swing with Extra Counterweight 1005 mm
Sustainability
Recyclability 95%

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Maximum Vertical Dig Depth - Long Stick 2320 mm²
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Operating Weight 1955 kg
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Net Power 33.6 kW
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Gross Power - 2,400 rpm - SAE J1995:2014 36.1 kW
Bore 84 mm
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Net Power 34.9 kW
Operating Weight 8113 kg
Height 431 mm
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Net Power 30 kW
Net Power - ISO 9249 30 kW
Operating Weight 4039 kg
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Gross Power 13.7 kW
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