303 CR Mini Hydraulic Excavator

The Cat® 303 CR Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.

303 CR Mini Hydraulic Excavator
303 CR Mini Hydraulic Excavator
303 CR Mini Hydraulic Excavator
303 CR Mini Hydraulic Excavator
Front View
Top View
Left View
Rear View
Bottom View
Right View
303 CR Mini Hydraulic Excavator

Features

  • ALL DAY COMFORT

    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

    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

    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

    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

    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

    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

    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

    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)

Specifications

Units for specifications

Engine

Net Power 23.6 hp 17.6 kW
Engine Model C1.1 Turbo
Bore 3 in 77 mm
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC 23.6 hp 17.6 kW
Emissions Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Stroke 3.2 in 81 mm
Note Advertised power is tested per the specified standard in effect at the time of manufacture.
Displacement 69 in³ 1.1 l
Gross Power - 2,400 rpm - SAE J1995:2014 24.7 hp 18.4 kW

Weights

Operating Weight 7817 lb 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*** 6791 lb 3080 kg
Minimum Operating Weight with Canopy* 6670 lb 3025 kg
Minimum Operating Weight with Cab* 6924 lb 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** 7552 lb 3425 kg
EU: CE Plate Weight with Cab*** 7012 lb 3180 kg
Maximum Operating Weight with Cab** 7817 lb 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

Dig Depth 116.1 in 2950 mm
Boom Height - Shipping Position 75.6 in 1920 mm
Tail Swing with Counterweight 35 in 890 mm
Track Belt/Shoe Width 11.8 in 300 mm
Maximum Reach 206.3 in 5240 mm
Boom In Reach 74.2 in 1910 mm
Boom Swing - Right 34.3 in 870 mm
Tail Swing 33.3 in 845 mm
Maximum Dump Clearance 130.3 in 3310 mm
Ground Clearance 12.2 in 310 mm
O/A Undercarriage Length 81.5 in 2070 mm
O/A Shipping Height 97.6 in 2480 mm
Track Width - Expanded 61 in 1550 mm
Maximum Blade Depth 21.1 in 535 mm
Maximum Reach - Ground Level 201.2 in 5110 mm
Stick Length 61.4 in 1560 mm
Overall Shipping Length* 179.5 in 4560 mm
Maximum Dig Height 183.1 in 4650 mm
Swing Bearing - Height 22.4 in 570 mm
Note *Overall Shipping Length depends on blade position during shipment.
Tail Swing without Counterweight 30.5 in 775 mm
Maximum Blade Height 15.2 in 385 mm
Boom Swing - Left 25.2 in 640 mm
Vertical Wall 81.5 in 2070 mm

Blade

Height 13.8 in 350 mm
Width 61 in 1550 mm

Dimensions - Standard Stick

Maximum Blade Depth 21.1 in 535 mm
Tail Swing without Counterweight 30.5 in 775 mm
Maximum Dig Height 177.6 in 4510 mm
O/A Undercarriage Length 81.5 in 2070 mm
Boom Height - Shipping Position 63 in 1600 mm
Vertical Wall 71.7 in 1820 mm
Overall Shipping Length* 177.6 in 4510 mm
Boom Swing - Left 25.2 in 640 mm
O/A Shipping Height 97.6 in 2480 mm
Track Shoe Width 61 in 1550 mm
Boom Swing - Right 34.3 in 870 mm
Tail Swing with Extra Counterweight 35 in 890 mm
Swing Bearing - Height 22.4 in 570 mm
Tail Swing 33.3 in 845 mm
Maximum Blade Height 15.2 in 385 mm
Dig Depth 104.3 in 2650 mm
Maximum Dump Clearance 124.8 in 3170 mm
Maximum Reach - Ground Level 190.2 in 4830 mm
Maximum Reach 196.1 in 4980 mm
Ground Clearance 12.2 in 310 mm
Track Belt/Shoe Width 11.8 in 300 mm
Boom In Reach 68.9 in 1750 mm
Stick Length 49.6 in 1260 mm
Note *Overall Shipping Length depends on blade position during shipment.

Swing System

Boom Swing - Right 50 ° 50 °
Machine Swing Speed 9 r/min 9 r/min
Boom Swing - Left 75 ° 75 °

Sound

Average Exterior Sound Pressure (ISO 6395:2008) 94 dB(A) 94 dB(A)
Operator Sound Pressure (ISO 6396:2008) 78 dB(A) 78 dB(A)
Note European Union Directive “2000/14/EC”

Hydraulic System

Auxiliary Circuit - Primary - Flow 17 gal/min 65 l/min
Auxiliary Circuit - Secondary - Pressure 3553 psi 245 bar
Operating Pressure - Swing 2553 psi 176 bar
Pump Flow at 2,400 rpm 26 gal/min 100 l/min
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Standard 3732 lbf 16.6 kN
Operating Pressure - Travel 3553 psi 245 bar
Digging Force - Bucket 6385 lbf 28.4 kN
Operating Pressure - Equipment 3553 psi 245 bar
Auxiliary Circuit - Primary - Pressure 3553 psi 245 bar
Auxiliary Circuit - Secondary - Flow 7 gal/min 25 l/min
Digging Force - Stick - Long 3327 lbf 14.8 kN
Note * Flow and pressure are not combinable. Under load, as flow rises pressure goes down.

Travel System

Gradeability - Maximum 30 degrees
Ground Pressure - Maximum Weight 4.7 psi 32.3 kPa
Ground Pressure - Minimum Weight 4 psi 27.6 kPa
Travel Speed - High 2.8 mile/h 4.5 km/h
Maximum Traction Force - Low Speed 7059 lbf 31.4 kN
Travel Speed - Low 1.6 mile/h 2.6 km/h
Maximum Traction Force - High Speed 3305 lbf 14.7 kN

Service Refill Capacities

Cooling System 1.1 gal (US) 4 l
Hydraulic Tank 4.8 gal (US) 18 l
Engine Oil 1.1 gal (US) 4 l
Fuel Tank 11.9 gal (US) 45 l
Hydraulic System 9.2 gal (US) 35 l

Weight Increase from Minimum Configuration

Counterweight 221 lb 100 kg
Cab 254 lb 115 kg
Steel Tracks 276 lb 125 kg
Long Stick 55 lb 25 kg
Extra Counterweight 551 lb 250 kg

Certification - Cab and Canopy

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

Recyclability 95%

Standard Equipment

ENGINE

  • 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

  • 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

  • Top Guard ISO 10262:1998 Level I

OPERATOR ENVIRONMENT

  • 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

  • Rubber Belt (300 mm/11.8 in wide)
  • Dozer Blade
  • Dozer Blade Float
  • Tie Downs on Track Frame

BOOM, STICK AND LINKAGES

  • 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

  • 12 Volt Battery
  • Software (machine and monitor)
  • Maintenance Free Battery
  • Signaling/Warning Horn
  • 12 Volt Power Socket

Optional Equipment

OPERATOR ENVIRONMENT

  • 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

  • Steel Track (300 mm/11.8 in wide)

BOOM, STICK AND LINKAGES

  • 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

  • Battery Disconnect
  • Product Link PL243 (regulations apply)
  • Product Link PLE643 (regulations apply)
  • Travel Alarm (standard in some regions)

GUARDING

  • Polycarbonate Front Guard (ISO 10262:1998 Level I and EN356 P5A)
  • Polycarbonate Half Height Front Guard (Canopy only)

OTHER

  • Bio Oil Capable
  • Eco Drain
  • Water Jacket Heater

Videos

  • Introducing the Next Generation Cat 302.7 CR, 303 CR and 303.5 CR Mini Excavators
  • Overview of the Next Generation Cat 302.7 CR, 303 CR and 303.5 CR Mini Excavators
  • Standard Monitor on the Next Generation Cat Mini Excavators
  • How to Select the Correct 3 Ton Cat Next Generation Mini Excavator
303 CR Mini Hydraulic Excavator

Documents

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